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Cornell University
1.
Lim, Gwynne Shimin.
SYSTEMATICS AND REPRODUCTIVE BIOLOGY OF Tacca J.R. Forst. & G. Forst.
Degree: PhD, Plant Biology, 2018, Cornell University
URL: http://hdl.handle.net/1813/59426 
► The genus Tacca comprises an enigmatic group of tropical perennial acaulescent herbs. These plants are characterized by unique bracteate reproductive displays, which have excited interest…
(more)
▼ The genus Tacca comprises an enigmatic group of tropical perennial acaulescent herbs. These plants are characterized by unique bracteate reproductive displays, which have excited interest in their reproductive biology. This dissertation examines aspects of systematics and reproductive biology in Tacca. The first chapter puts forward a phylogenetic study of relationships within Tacca J.R. Forst. & G. Forst., supplementing previous molecular phylogenetic and pre-cladistic taxonomic studies. Species, exemplar, and outgroup sampling are expanded. Multiple sources of data, molecular and morphological, are used for phylogenetic inference. This is used to interpret morphological evolution in various plant organs in the genus. The second chapter presents a comparative analysis of the genes and plastome structures of single representatives from Tacca and sister genus Thismia. The plastomes were sequenced using next-generation technology and generated using de novo assembly programs. The plastid genome of Thismia is among the smallest known quadripartite plastomes. The plastome of Tacca is more similar to other autotrophic members of Dioscoreaceae than to Thismia The third chapter documents an investigation into floral visitors of Tacca cristata Jack. Existing research on the pollination and reproductive biology of Tacca demonstrate low levels of outcrossing and likely autogamous selfing. Based on visual observations and field collections of insect visitors to natural populations, this study suggests that insect visitation may result in pollination of showy members of Tacca to some extent. The fourth chapter proposes to resurrect and lectotypify Tacca artocarpifolia Seem., a species currently in taxonomic synonymy. This is done based on examination and measurements made from photographs, live material, and herbarium specimens, including all named syntypes.
Advisors/Committee Members: Davis, Jerrold I. (chair), Raguso, Robert A. (committee member), Gandolfo Nixon, Maria Alejandra (committee member), Stevenson, Dennis (committee member).
Subjects/Keywords: Botany
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APA (6th Edition):
Lim, G. S. (2018). SYSTEMATICS AND REPRODUCTIVE BIOLOGY OF Tacca J.R. Forst. & G. Forst. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/59426
Chicago Manual of Style (16th Edition):
Lim, Gwynne Shimin. “SYSTEMATICS AND REPRODUCTIVE BIOLOGY OF Tacca J.R. Forst. & G. Forst.” 2018. Doctoral Dissertation, Cornell University. Accessed March 02, 2021.
http://hdl.handle.net/1813/59426.
MLA Handbook (7th Edition):
Lim, Gwynne Shimin. “SYSTEMATICS AND REPRODUCTIVE BIOLOGY OF Tacca J.R. Forst. & G. Forst.” 2018. Web. 02 Mar 2021.
Vancouver:
Lim GS. SYSTEMATICS AND REPRODUCTIVE BIOLOGY OF Tacca J.R. Forst. & G. Forst. [Internet] [Doctoral dissertation]. Cornell University; 2018. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/1813/59426.
Council of Science Editors:
Lim GS. SYSTEMATICS AND REPRODUCTIVE BIOLOGY OF Tacca J.R. Forst. & G. Forst. [Doctoral Dissertation]. Cornell University; 2018. Available from: http://hdl.handle.net/1813/59426
University of KwaZulu-Natal
2.
Shaik, Shakira.
In vitro studies and phytocompound analysis in Lessertia frutescens (Fabaceae).
Degree: PhD, Botany, 2011, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/5432
► The cancer bush (Lessertia frutescens L.) is an important leguminous perennial native to southern Africa and has been used for centuries in traditional medicine by…
(more)
▼ The cancer bush (Lessertia frutescens L.) is an important leguminous perennial native to
southern Africa and has been used for centuries in traditional medicine by the continent’s diverse
cultural groups. Like many other legumes, the seeds of this species exhibit dormancy. Moreover,
woody plants are typically difficult to propagate in in vitro culture systems. But in vitro shoot
cultures are valuable in providing an alternative means of deriving desired secondary metabolites
or phytocompounds, under controlled conditions. This study describes novel protocols for
breaking seed dormancy, rapid and efficient in vitro propagation, bioreactor culture, and
comprehensive phytochemical data following screening and analysis of in vitro and field extracts
of L. frutescens. Experiments using physical, mechanical and chemical pre-sowing treatments
were conducted to determine the germination response of this species. The results indicated that
seeds of L. frutescens exhibited exogenous dormancy due to the inhibitory effect of the hard coat
on germination. Seed dormancy was released by mechanical scarification in which 100 %
germination was achieved. In vitro propagation studies using single node explants in Murashige
and Skoog (MS) medium supplemented with combinations of different concentrations of
benzyladenine and naphthaleneacetic acid revealed a maximum number of 10 shoots per explant
in solid medium, and 12.9 shoots per explant in liquid medium inside a temporary immersion
bioreactor. Indirect shoot organogenesis and plant regeneration using rachis and stem segments
was achieved with the highest percentage of explants forming shoots (88.8 %) from rachis
explants cultured onto MS medium supplemented with thidiazuron. Direct shoot organogenesis
from hypocotyl and cotyledon segments was also achieved in L. frutescens. The highest shoot
regeneration using hypocotyls (83 %) was obtained in MS medium supplemented with kinetin
whilst the highest shoot regeneration using cotyledons (46 %) was obtained in MS medium
supplemented with kinetin in combination with benzyladenine. Successful rooting (up to 80 %)
and acclimatization (up to 90 % survival rate) was attained. Spectrophotometric and gravimetric
methods indicated that saponins were the most abundant, followed by phenolics, flavonoids and
then alkaloids in in vitro leaf extracts then in field leaf extracts and seed extracts, respectively.
After qualitative analysis these extracts were also found to contain tannins, phlobatannins and
cardiac glycosides of medicinal interest. By using gas and liquid chromatography the presence of
the medicinally important L-canavanine, gamma amino-butyric acid and D-pinitol was verified
in in vitro leaf, field leaf and seed extracts. In vitro leaves had higher quantities of all
compounds, except for D-pinitol. Phytocompound analysis of shoots derived from several of the
cytokinin-enhanced media showed that these organs contained higher quantities of L-canavanine
compared to the control. This study, therefore,…
Advisors/Committee Members: Nicholas, Ashley. (advisor), Singh, Nisha. (advisor).
Subjects/Keywords: Botany.
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APA (6th Edition):
Shaik, S. (2011). In vitro studies and phytocompound analysis in Lessertia frutescens (Fabaceae). (Doctoral Dissertation). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/5432
Chicago Manual of Style (16th Edition):
Shaik, Shakira. “In vitro studies and phytocompound analysis in Lessertia frutescens (Fabaceae).” 2011. Doctoral Dissertation, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/5432.
MLA Handbook (7th Edition):
Shaik, Shakira. “In vitro studies and phytocompound analysis in Lessertia frutescens (Fabaceae).” 2011. Web. 02 Mar 2021.
Vancouver:
Shaik S. In vitro studies and phytocompound analysis in Lessertia frutescens (Fabaceae). [Internet] [Doctoral dissertation]. University of KwaZulu-Natal; 2011. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/5432.
Council of Science Editors:
Shaik S. In vitro studies and phytocompound analysis in Lessertia frutescens (Fabaceae). [Doctoral Dissertation]. University of KwaZulu-Natal; 2011. Available from: http://hdl.handle.net/10413/5432
3.
Kavitha, G R.
Morphological and histochemical studies on the Haustorium
of some Rhinanthoideae of Scrophulariaceae; -.
Degree: Botany, 2009, University of Mysore
URL: http://shodhganga.inflibnet.ac.in/handle/10603/11055
► The tribe Rhinanthoideae of the family Scrophulariaceae comprises root hemiparasitic herbs. The haustorium is an organ connecting the parasite with that of the host. Hemiparasitic…
(more)
▼ The tribe Rhinanthoideae of the family
Scrophulariaceae comprises root hemiparasitic herbs. The haustorium
is an organ connecting the parasite with that of the host.
Hemiparasitic Scrophulariaceae have the potential to become serious
pests on cereal crops. Knowledge of structure and development of
haustorium is essential for understanding the function and
evolutionary origin of parasitism in flowering plants and for
developing strategies to manage the parasites. The present
investigation was envisaged to study the development and structure
of the haustorium, nature of tracheary elements, presence/absence
of inclusions in tracheary elements and the presence/absence of
phloem in the haustorium of Sopubia delphinifolia G. Don,
Micrargeria wightii Benth., Buchnera hispida Ham. ex D. Don and
Rhamphicarpa longiflora Benth. belonging to the Rhinanthoideae. The
roots of parasite and host were fixed in F.A.A. The haustoria with
a portion of the parasite root and host root were dehydrated in TBA
series and embedded in paraffin and sectioned with a microtome.
Early developmental stages were studied using Haidenhain s iron
haematoxylin erythrosine combination. Phloem was detected using
Lacmoid / aniline blue. Histochemical tests were conducted to
detect the presence of proteins, polysaccharides or lignin
granules. Tissue clearing and maceration were also carried out. The
haustorium in all the four taxa comprises of an axial region of
differentiated xylem elements connecting the host and parasite
vasculature. Outer to the xylem elements are present phloem
elements. The phloem runs from the parent stele up to the entry of
the endophyte (portion of the haustorium in the host root) into the
host stele. No phloem to phloem contact is seen in the haustorium
host interface.
Bibliography p.131-154
Advisors/Committee Members: Shivamurthy, G R.
Subjects/Keywords: Botany
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APA (6th Edition):
Kavitha, G. R. (2009). Morphological and histochemical studies on the Haustorium
of some Rhinanthoideae of Scrophulariaceae; -. (Thesis). University of Mysore. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/11055
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kavitha, G R. “Morphological and histochemical studies on the Haustorium
of some Rhinanthoideae of Scrophulariaceae; -.” 2009. Thesis, University of Mysore. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/11055.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kavitha, G R. “Morphological and histochemical studies on the Haustorium
of some Rhinanthoideae of Scrophulariaceae; -.” 2009. Web. 02 Mar 2021.
Vancouver:
Kavitha GR. Morphological and histochemical studies on the Haustorium
of some Rhinanthoideae of Scrophulariaceae; -. [Internet] [Thesis]. University of Mysore; 2009. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/11055.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kavitha GR. Morphological and histochemical studies on the Haustorium
of some Rhinanthoideae of Scrophulariaceae; -. [Thesis]. University of Mysore; 2009. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/11055
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
4.
Mohammad Yusuf.
Effect of brassinosteroids on nickel Induced changes in
vigna radiata; -.
Degree: Botany, 2011, Aligarh Muslim University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/11358
► Abstract of the thesis, submitted to Aligarh Muslim University, Aligarh, India, for the degree of Doctor of Philosophy in Botany, in the year 2011. Five…
(more)
▼ Abstract of the thesis, submitted to Aligarh Muslim
University, Aligarh, India, for the degree of Doctor of Philosophy
in Botany, in the year 2011. Five pot experiments were conducted,
during 2008-2010 to elucidate the effect of brassinosteroids on
nickel induced changes in Vigna radiata L. Wilczek. Nickel was
administered in soil whereas; brassinosteroids were applied as
pre-sowing seed soaking treatment or to the foliage. The salient
features of each of the five experiments are mentioned below.
Experiment 1 The surface sterilized seeds of mung bean (Vigna
radiata L.) Wilczek cv. T-44, SML-668, K-851, LML-613, and PDM-139
were inoculated with a uniform layer of Rhizobium sp. The coated
seeds were sown in earthen pots (25and#61620; 25 cm) filled with
sandy loam soil and farmyard manure mixed in the ratio of 6:1. The
Ni was administered through soil (0, 50, 100, or 150 mg kg-1) in
the form of NiCl2. Thinning was done 7 d after sowing (DAS),
leaving three plants per pot where five pots were maintained per
treatment. The plant samples were collected at 30 DAS to assess
various growth, photosynthetic, biochemical attributes. All the
varieties showed significantly different response to various
concentrations of the metal. The varieties T-44, SML-668 and K-851
exhibited lesser damage in response to different levels (0, 50,
100, or 150 mg kg-1) of Ni. The highest level (150 mg kg-1) of Ni
generated maximum damage. The varieties PDM-139, LML-613 and K-851
showed less resistance against higher level (150 mg kg-1) of metal.
The varieties T-44 and SML-668 found least and moderately affected
respectively whereas PDM-139 experienced maximum damage at 150 mg
kg-1 of Ni. Moreover, PDM-139 was found most sensitive against
metal stress. All the parameters except the activity of antioxidant
enzymes, electrolyte leakage and proline content in all the
varieties showed a linear decrease as the level of the metal in the
soil increased (0, 50, 100, or 150 mg kg-1).
References p. 147-180
Advisors/Committee Members: Qazi Fariduddin.
Subjects/Keywords: Botany
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APA ·
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Manager
APA (6th Edition):
Yusuf, M. (2011). Effect of brassinosteroids on nickel Induced changes in
vigna radiata; -. (Thesis). Aligarh Muslim University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/11358
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Yusuf, Mohammad. “Effect of brassinosteroids on nickel Induced changes in
vigna radiata; -.” 2011. Thesis, Aligarh Muslim University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/11358.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yusuf, Mohammad. “Effect of brassinosteroids on nickel Induced changes in
vigna radiata; -.” 2011. Web. 02 Mar 2021.
Vancouver:
Yusuf M. Effect of brassinosteroids on nickel Induced changes in
vigna radiata; -. [Internet] [Thesis]. Aligarh Muslim University; 2011. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/11358.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yusuf M. Effect of brassinosteroids on nickel Induced changes in
vigna radiata; -. [Thesis]. Aligarh Muslim University; 2011. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/11358
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
5.
Chakravarti, Sudhir Kumar.
PREVALENCE AND DISTRIBUTION OF ARBUSCULAR MYCORRHIZAL
FUNGI ASSOCIATED WITH SOME SPICES.
Degree: 2013, Shri Jagdishprasad Jhabarmal Tibarewala University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/10191
► With increasing population, the land under cultivation has been degraded due to industrialization or urbanization and with human activities. As a result of this, problems…
(more)
▼ With increasing population, the land under
cultivation has been degraded due to industrialization or
urbanization and with human activities. As a result of this,
problems to land scarcity occurs a head the farmers. So, efforts
have been made to reach the world food demand with increasing
population. Food production was increased with increase use of
chemicals and fertilizers which have further resulted in
environmental problems. The goal of sustainable development in
agriculture can be viewed broadly as maximum plant production with
a minimum soil loss. Among the different microbial groups, which
have been proposed for plant inoculation, much attention has been
given to arbuscular mycorrhizal fungi. newlineAM fungi increase the
plant growth and yield through nutrient uptake and tolerance to
biotic and abiotic stress and this has led to the researchers to
explore possibilities of using AM fungi in production of different
spice crops. newlineA total of 12 spice plant species belonging to
11 genera were selected from different localities of Udham Singh
Nagar. Out of these total 12 spice plants, 8 species belonging to 7
families represent dicot group and 4 species belonging to 2
families represent monocot group. In present investigation, soil
and root samples of the selected crops collected from different
parts of Udham Singh Nagar and its adjoining areas for studying
mycorrhizal status and spore biodiversity of AM fungi. In studied
crops, root colonization ranged from zero to 95.66 percent. Among
studied crpos, Allium sativum L., Allium cepa L., Mentha arvensis
L., Trigonella foenum graceum L., Coriandrum sativum L. and Curcuma
longa L. showed maximum root colonization, Capsicum annuum L. and
Cinnamomum tamala showed average mycorrhizal root colonization,
Murraya koenigii and Elettaria cardamomum were observed to be least
mycorrhizal and Brassica compestris L. were observed to be
non-mycorrhizal. Maximum root colonization ranged from 55-100%,
average from 40-55% and least from 10-40%. newline
newline
Advisors/Committee Members: Tripathi, Suman Lata.
Subjects/Keywords: BOTANY
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APA (6th Edition):
Chakravarti, S. K. (2013). PREVALENCE AND DISTRIBUTION OF ARBUSCULAR MYCORRHIZAL
FUNGI ASSOCIATED WITH SOME SPICES. (Thesis). Shri Jagdishprasad Jhabarmal Tibarewala University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/10191
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chakravarti, Sudhir Kumar. “PREVALENCE AND DISTRIBUTION OF ARBUSCULAR MYCORRHIZAL
FUNGI ASSOCIATED WITH SOME SPICES.” 2013. Thesis, Shri Jagdishprasad Jhabarmal Tibarewala University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/10191.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chakravarti, Sudhir Kumar. “PREVALENCE AND DISTRIBUTION OF ARBUSCULAR MYCORRHIZAL
FUNGI ASSOCIATED WITH SOME SPICES.” 2013. Web. 02 Mar 2021.
Vancouver:
Chakravarti SK. PREVALENCE AND DISTRIBUTION OF ARBUSCULAR MYCORRHIZAL
FUNGI ASSOCIATED WITH SOME SPICES. [Internet] [Thesis]. Shri Jagdishprasad Jhabarmal Tibarewala University; 2013. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10191.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chakravarti SK. PREVALENCE AND DISTRIBUTION OF ARBUSCULAR MYCORRHIZAL
FUNGI ASSOCIATED WITH SOME SPICES. [Thesis]. Shri Jagdishprasad Jhabarmal Tibarewala University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10191
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
6.
PATEL HITESHKUMAR R.
AN ETHNOBOTANICAL AND FLORISTIC SURVEY OF R D F POSHINA
RANGE OF SABARKANTHA DISTRICT NORTH GUJARAT INDIA;.
Degree: 2013, Shri Jagdishprasad Jhabarmal Tibarewala University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/10197
► The principal of this thesis is .India is very rich country in species diversity and also preserve lots of endemic species. Gujarat is also particularly…
(more)
▼ The principal of this thesis is .India is very rich
country in species diversity and also preserve lots of endemic
species. Gujarat is also particularly rich in biodiversity owing to
its remarkable diversity in geophysical and climatic conditions.
newlineSabarkantha is a district of Gujarat state having hilly and
forest area near the range of Arvalli hills. The district
Sabarkantha is situated in the north eastern part of Gujarat state
between 23°03 and 24°30 north latitudes and 72°43 and 73°39 east
longitudes. It covers an area of 7,390 km² of 13 talukas.
newlineExtensive field trips were organized during the year
2010-2012 in R.D.F. Poshina Forest range area of Sabarkantha
district in North Gujarat. Forest areas and villages of such
regions were frequently visited, to collect the information about
the forest wealth and uses of plant species were noted.
newlineFloristicily the R. D. F. Poshina range forest is
representing 258 plant species, 193 genera belonging to 69
families. Sub class polypetalae representing 126 plant species,
gamopetalae representing 82 plant species and monoclamadae
representing 50 plant species . newlineEthnobotany is the study of
how people of a particular culture and region make of use of
indigenous plants. Ethnobotanists explore how plants are used for
such things as food, shelter, medicine, clothing, hunting, and
religious ceremonies. Survey on ethnobotanical practice of the area
showed a good number tree species have been used for the
preparation of various ethnomedicinaly (71 species), agricultural
implements (16 species), household implements (22 species), musical
instruments (5 species) and sacre species (44 species). newline
newline
Advisors/Committee Members: PATEL R. S..
Subjects/Keywords: BOTANY
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APA ·
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
R., P. H. (2013). AN ETHNOBOTANICAL AND FLORISTIC SURVEY OF R D F POSHINA
RANGE OF SABARKANTHA DISTRICT NORTH GUJARAT INDIA;. (Thesis). Shri Jagdishprasad Jhabarmal Tibarewala University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/10197
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
R., PATEL HITESHKUMAR. “AN ETHNOBOTANICAL AND FLORISTIC SURVEY OF R D F POSHINA
RANGE OF SABARKANTHA DISTRICT NORTH GUJARAT INDIA;.” 2013. Thesis, Shri Jagdishprasad Jhabarmal Tibarewala University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/10197.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
R., PATEL HITESHKUMAR. “AN ETHNOBOTANICAL AND FLORISTIC SURVEY OF R D F POSHINA
RANGE OF SABARKANTHA DISTRICT NORTH GUJARAT INDIA;.” 2013. Web. 02 Mar 2021.
Vancouver:
R. PH. AN ETHNOBOTANICAL AND FLORISTIC SURVEY OF R D F POSHINA
RANGE OF SABARKANTHA DISTRICT NORTH GUJARAT INDIA;. [Internet] [Thesis]. Shri Jagdishprasad Jhabarmal Tibarewala University; 2013. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10197.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
R. PH. AN ETHNOBOTANICAL AND FLORISTIC SURVEY OF R D F POSHINA
RANGE OF SABARKANTHA DISTRICT NORTH GUJARAT INDIA;. [Thesis]. Shri Jagdishprasad Jhabarmal Tibarewala University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10197
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
7.
LIMBOCHIYA SWATI PARESH.
DIVERSITY IN TREE SPECIES AND IT S IMPACT ON URBAN
CLIMATE THE CASE OF AHMEDABAD;.
Degree: 2013, Shri Jagdishprasad Jhabarmal Tibarewala University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/10587
► Ahmedabad is located in north-east position of Gujarat state of India, geographically extreme positions 230 1 N (north), 220 56 N (south),72030 E (west) and…
(more)
▼ Ahmedabad is located in north-east position of
Gujarat state of India, geographically extreme positions 230 1 N
(north), 220 56 N (south),72030 E (west) and 720 41 E (east) and
average 53m height above sea level. Pre-May 1970, it was capital to
Gujarat. This city was established by Sultan Ahmed on bank of
Sabarmati river and has own very interesting history.It is district
place neighboring to Mehsana, Surendranagar, Gandhinagar, Anand and
Kheda districts. Once upon a time, Ahmedabad was globally known as
Manchester of India as there was lot of textile mills in this
city.As per Census 2011, population of Ahmedabad is 5.5 million and
its urban/metropolitan population is 6.3mllion. It is seventh
largest metropolitan city of India.It is also judicial capital of
Gujarat state. This city has rich industrial establishments since
beginning having main industry of textile mills,
pharmaceuticals,engineering and latest addition of automotive
industry. This city is well-known due to corporates like Nirma,
Torrent, Adani, Cadila, and education institutes like IIM, IIT,
Gujarat University, Nirma University and of-course for Sardar
Sarovar Project which connects state s different area with Narmada
River. newlineBeing resident of this city, we have taken up
research project to identify and summarize tree species of urban
Ahmedabad and its climatic effect. Our work deals with 225 tree
species from total 50families. While reviewing, 5major tree species
are Azadirachta indica A. Juss, Polyalthia longifolia (Sonn.),
Holoptelea integrifolia (Roxb.) planch, Delonixregia (Bojer. ex.
Hook) and Acacia nilotica (L) wild ex. Delite ssp. Indica (Benth)
and total tree density of 618,048. We have studied environmental
pollution with respect to tree density, specifically on Respiratory
Suspended Particulate Matters, Suspended Particulate Matters,
Sulfur Dioxide and Nitrogen Oxides in individual zone-ward wise.
There are many areas which are still in bad situation even today,
this due to lack of infrastructure and awareness in
habitants.
Advisors/Committee Members: PATEL RAJESH S..
Subjects/Keywords: BOTANY
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APA (6th Edition):
PARESH, L. S. (2013). DIVERSITY IN TREE SPECIES AND IT S IMPACT ON URBAN
CLIMATE THE CASE OF AHMEDABAD;. (Thesis). Shri Jagdishprasad Jhabarmal Tibarewala University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/10587
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
PARESH, LIMBOCHIYA SWATI. “DIVERSITY IN TREE SPECIES AND IT S IMPACT ON URBAN
CLIMATE THE CASE OF AHMEDABAD;.” 2013. Thesis, Shri Jagdishprasad Jhabarmal Tibarewala University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/10587.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
PARESH, LIMBOCHIYA SWATI. “DIVERSITY IN TREE SPECIES AND IT S IMPACT ON URBAN
CLIMATE THE CASE OF AHMEDABAD;.” 2013. Web. 02 Mar 2021.
Vancouver:
PARESH LS. DIVERSITY IN TREE SPECIES AND IT S IMPACT ON URBAN
CLIMATE THE CASE OF AHMEDABAD;. [Internet] [Thesis]. Shri Jagdishprasad Jhabarmal Tibarewala University; 2013. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10587.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
PARESH LS. DIVERSITY IN TREE SPECIES AND IT S IMPACT ON URBAN
CLIMATE THE CASE OF AHMEDABAD;. [Thesis]. Shri Jagdishprasad Jhabarmal Tibarewala University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10587
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
8.
Patel, Yatinkumar Sureshlal.
CONTRIBUTION TO THE FLORISTIC AND PHYTOSOCIOLOGY OF BANNI
REGION KACHCHH DISTRICT GUJARAT INDIA.
Degree: 2013, Shri Jagdishprasad Jhabarmal Tibarewala University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/10588
► The work reported in the thesis with the title, CONTRIBUTION TO THE FLORISTICS AND PHYTOSOCIOLOGY OF BANNI REGION, KACHCHH DISTRICT, GUJARAT - INDIA has been…
(more)
▼ The work reported in the thesis with the title,
CONTRIBUTION TO THE FLORISTICS AND PHYTOSOCIOLOGY OF BANNI REGION,
KACHCHH DISTRICT, GUJARAT - INDIA has been described as under.
newlineIt is very imperative to know the floristic and
Phytosociology of an area mainly to know the Structure and
composition of plant community. It is an important aspect of
ecological estimation of vegetation dynamics which reveals the
structural arrangement of various components in plant community and
helps to understand the community structure and diversity. The
present investigation was carried out the floristic enumeration and
composition of vegetation in the Banni Region (BR) of Kachchh
district, Gujarat. Through, the present ecological and
ethnobotanical study in the Banni areas (2011-13), able to list a
total 219 plant species. In which, 165 species were dicots and the
remaning (54) were monocots. All the species belonged to 51
families and 158 genera. Poaceae was the most dominant family
represented by 45 species followed by Asteraceae, Amaranthaceae,
Cucurbitaceae and Euphorbiaceae. Cyperus and Eragrostic were the
dominat genera of Banni region and Indigofera, Ipomoea, Sporobulus,
Cassia, Cenchrus, Convolvuulus, Corchorus, Euphorbia, Ficus and
Solanum are also dominant genera of the Banni region. Among the
total number of plant species 175 were common, 31 not common, 4 not
frequent and 9 species were recorded as a locally rare. newlineIn
addition, out of the total recorded 19 threatened plants of
Kachchh, only two were reported from the Banni regions which are
Ammannia desertorum Blatt. and Hall. and Citrullus colocynthis (L.)
Soland. During the intensive floristic inventory, a total of 12
species were reported as new to Banni region, which are Elyonurus
royleanus, Manisurus granularis, Anisomeles indica, Ipomoea nil,
Merremia gangetica, Psoralea plicata, Rivea hypocrateriformis,
Setaria verticillata, Typha angustata, Zornia gibbosa, Salvadora
persica Var. indica and Convolvulus auricomus.
Advisors/Committee Members: Dabgar, Yogesh B.
Subjects/Keywords: BOTANY
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APA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Patel, Y. S. (2013). CONTRIBUTION TO THE FLORISTIC AND PHYTOSOCIOLOGY OF BANNI
REGION KACHCHH DISTRICT GUJARAT INDIA. (Thesis). Shri Jagdishprasad Jhabarmal Tibarewala University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/10588
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Patel, Yatinkumar Sureshlal. “CONTRIBUTION TO THE FLORISTIC AND PHYTOSOCIOLOGY OF BANNI
REGION KACHCHH DISTRICT GUJARAT INDIA.” 2013. Thesis, Shri Jagdishprasad Jhabarmal Tibarewala University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/10588.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Patel, Yatinkumar Sureshlal. “CONTRIBUTION TO THE FLORISTIC AND PHYTOSOCIOLOGY OF BANNI
REGION KACHCHH DISTRICT GUJARAT INDIA.” 2013. Web. 02 Mar 2021.
Vancouver:
Patel YS. CONTRIBUTION TO THE FLORISTIC AND PHYTOSOCIOLOGY OF BANNI
REGION KACHCHH DISTRICT GUJARAT INDIA. [Internet] [Thesis]. Shri Jagdishprasad Jhabarmal Tibarewala University; 2013. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10588.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Patel YS. CONTRIBUTION TO THE FLORISTIC AND PHYTOSOCIOLOGY OF BANNI
REGION KACHCHH DISTRICT GUJARAT INDIA. [Thesis]. Shri Jagdishprasad Jhabarmal Tibarewala University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10588
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
9.
Pralhad, Giri Sanjay.
Mutation breeding of pigeonpea cajanus cajan L millsp for
yield contributing traits.
Degree: Botany, 2011, University of Pune
URL: http://shodhganga.inflibnet.ac.in/handle/10603/3214
► The present investigation entitled “Mutation Breeding of Pigeonpea [Cajanus cajan (L.) Millsp.] for Yield Contributing Traits.” was undertaken with an objective of inducing genetic variability…
(more)
▼ The present investigation entitled “Mutation
Breeding of Pigeonpea [Cajanus cajan (L.) Millsp.] for Yield
Contributing Traits.” was undertaken with an objective of inducing
genetic variability in yield contributing traits in a local
cultivar of pigeonpea, ICPL-87, employing two well known potent
mutagens, EMS and Gamma rays so that viable mutants showing novel
improved yield contributing traits could be screened and isolated
during subsequent generations. Attempts were also made to study the
mutagenic effectiveness and efficiency of these two mutagens and
their impact on yield contributing traits and biochemical
parameters. The objectives, if realized, would go a long way in
providing broad genetic variability that would be highly useful to
the pigeonpea breeders in planning their hybridization programmes
and developing superior improved varieties of pigeonpea having
wider adaptability to diverse agroclimatic conditions. INTRODUCTION
Pigeonpea [Cajanus cajan (L.) Millsp., Family, Fabaceae],
vernacularly also known as Red Gram or Tur is an important Pulse
crop widely cultivated in Indian subcontinent. In Maharashtra, it
is widely cultivated in Ahmednagar district. Pigeonpea forms one of
the important constituents in the dietary practices of local
communities. Pigeonpea is useful in various ways both as human food
and animal feed. As human food pigeonpea is used as dhal (split
seed without seed coat), whole seed, and green vegetable to
supplement cereal-based diets. The seed by-products from the dhal
mills are used as animal feed. Pigeonpea leaves are used as dry or
green fodder. Stalks of pigeonpea are useful for making baskets,
constructing huts, hedges, and binding material (Faris and Singh,
1990). Pigeonpea green manure provides nitrogen-rich organic
material to improve soil structure (Whiteman and Norton 1981).
Nutritional composition of pigeonpea indicates that it has protein
content as high as 19 23%, 1-2% fat, 45-55% carbohydrates, 1-5%
fibers, 3-5% soluble sugars, 1.5% water and energy 16-18% (Lawn and
Troedson, 1990). Its beans form a nutritious item of the food,
while the whole plant gives rich feed for cattle and is a good
manure as well as conservation crop. Pigeonpea is also prescribed
as a medicine to fulfill the need of malnutrition.
Summary p. 125-143, References p. 144-179, Appendix
p. 180-188
Advisors/Committee Members: Apparao, B J.
Subjects/Keywords: Botany
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APA (6th Edition):
Pralhad, G. S. (2011). Mutation breeding of pigeonpea cajanus cajan L millsp for
yield contributing traits. (Thesis). University of Pune. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/3214
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pralhad, Giri Sanjay. “Mutation breeding of pigeonpea cajanus cajan L millsp for
yield contributing traits.” 2011. Thesis, University of Pune. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/3214.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pralhad, Giri Sanjay. “Mutation breeding of pigeonpea cajanus cajan L millsp for
yield contributing traits.” 2011. Web. 02 Mar 2021.
Vancouver:
Pralhad GS. Mutation breeding of pigeonpea cajanus cajan L millsp for
yield contributing traits. [Internet] [Thesis]. University of Pune; 2011. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/3214.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pralhad GS. Mutation breeding of pigeonpea cajanus cajan L millsp for
yield contributing traits. [Thesis]. University of Pune; 2011. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/3214
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
10.
Shinde, Sukhada S.
Studies on some physiological traits in wheat under water
stress condition.
Degree: Botany, 2011, University of Pune
URL: http://shodhganga.inflibnet.ac.in/handle/10603/3267
► Wheat is one of the most important crops of the world and is cultivated in more than 250 million hectares, with an average annual production…
(more)
▼ Wheat is one of the most important crops of the
world and is cultivated in more than 250 million hectares, with an
average annual production of 80 M tons. India is the second largest
producer of wheat in world, with cultivation area of 28 million
hectares and an average productivity of approximate 27 q/ha. Wheat
demand of growing population is increasing with no change in area.
To meet the ever increasing demand of wheat production and
challenges to be faced for increasing productivity without scope of
increasing the area, there is prime need to follow the advanced
physiological tools, which may be useful in formulating the
breeding programme. The Central and Peninsular Zones account for
1/3rd of total area in India. On all India basis only 1/3rd area
receives desired irrigation and rest receives 2-3 irrigation or
limited irrigation. There is need to improve yield gains under
limited irrigation using reliable physiological traits which may be
dependable for selecting genotypes having higher tolerance to water
and heat. Breeding programmes are generally focused on rainfed as
well as irrigated environments. There is urgent need to develop
varieties which are responsive to limited irrigation. Breeding
strategies for these regions should aim at reduced irrigation
requirement and high yielding capacity. For this various recent
physiological techniques need to be adopted, which will help to
improve water use efficiency (WUE) and higher tolerance to water
and heat stress. Several morpho physiological traits are
traditionally used as screening criteria for drought tolerance such
as relative water content (RWC), stomatal index, water use
efficiency (WUE) etc. Crop WUE can be improved by optimizing crop
transpiration. Several workers have proposed carbon isotope
discrimination (CID), ash content and canopy temperature depression
(CTD) as selection criteria for transpiration efficiency (TE),
which may serve as the surrogate measures for improvement in grain
yield.
Summary p. 126-128, Bibliography p.
129-147
Advisors/Committee Members: Misra, S C.
Subjects/Keywords: Botany
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APA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Shinde, S. S. (2011). Studies on some physiological traits in wheat under water
stress condition. (Thesis). University of Pune. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/3267
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Shinde, Sukhada S. “Studies on some physiological traits in wheat under water
stress condition.” 2011. Thesis, University of Pune. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/3267.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Shinde, Sukhada S. “Studies on some physiological traits in wheat under water
stress condition.” 2011. Web. 02 Mar 2021.
Vancouver:
Shinde SS. Studies on some physiological traits in wheat under water
stress condition. [Internet] [Thesis]. University of Pune; 2011. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/3267.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Shinde SS. Studies on some physiological traits in wheat under water
stress condition. [Thesis]. University of Pune; 2011. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/3267
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
11.
Bapat, Gauri S.
Studies in Phellinus S L with special reference to those
occurring on Artocarpus heterophyllus Lam.
Degree: 2012, University of Pune
URL: http://shodhganga.inflibnet.ac.in/handle/10603/3420
► Phansomba is a medicinal mushroom used to cure ailments like teeth, tongue, throat related ailments, diarrhea and to stop excessive salivation in case of children.…
(more)
▼ Phansomba is a medicinal mushroom used to cure
ailments like teeth, tongue, throat related ailments, diarrhea and
to stop excessive salivation in case of children. Its medicinal
value is known in the pockets of Western Ghats of Maharashtra
especially, the Konkan region. The local name “Phansomba” given to
the medicine means “A mango like structure (mushroom) found on
Artocarpus heterophyllus trees (Jack fruit tree, Vernacular name:
Phanas). The literature survey revealed that, regionally traded
Phansomba samples mainly comprised of species belonging to genus
Phellinus alongwith scanty adulteration of Ganoderma spp. A
sytematic study was necessary to authenticate Phansomba as
Phellinus, which was achieved by collecting Phellinus spp.
occurring on Artocarpus heterophyllus through Konkan region of the
Western Ghats of Maharashtra. Species identification of all the
samples collected were undertaken using traditional taxonomic
method. Many problems were encountered in traditional taxonomic
identification of the samples due to vast number of valid species
(174). A method was therefore developed for idetifying Phellinus
spp. which is based on Digital Datamatrix (Synoptic key) generated
over chosen 95 taxonomic characters. The stated method is a
numerical taxonomic approach towards the identification of
Phellinus using a customized self-developed software code denoted
as “Phellinus Identifying Computer Code”. Identification of
Phellinus samples, was done on the basis of results given by the
software code. The datamatrix generated for 200 species of
Phellinus was subjected to Parsimonial cluster analysis, which
yielded segregation of species into 07 clusters based on their
taxonomic similarities. Total 27 cultures of Phellinus spp. were
isolated in axenic cultures, out of which, 20 were from Artocarpus
heterophyllus and 07 from other angiospermic trees. All cultures
were characterised based on chosen 16 characters. The resulting
datamatix, when subjected to Parsimonial cluster analysis revealed
the inadequacy of generated data to support the clustering of those
species based on taxonomic datamatrix. Considered the
neutraceutical value of Phellinus, taking steps towards its
commercial production was a necessity. To achieve this objective,
screening of cultures was done for the selection of best
isolate.
References p.82-100, Appendices
p.101-157
Advisors/Committee Members: Gunale, V R, Vaidya, J G.
Subjects/Keywords: Botany
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APA ·
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Export
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Manager
APA (6th Edition):
Bapat, G. S. (2012). Studies in Phellinus S L with special reference to those
occurring on Artocarpus heterophyllus Lam. (Thesis). University of Pune. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/3420
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bapat, Gauri S. “Studies in Phellinus S L with special reference to those
occurring on Artocarpus heterophyllus Lam.” 2012. Thesis, University of Pune. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/3420.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bapat, Gauri S. “Studies in Phellinus S L with special reference to those
occurring on Artocarpus heterophyllus Lam.” 2012. Web. 02 Mar 2021.
Vancouver:
Bapat GS. Studies in Phellinus S L with special reference to those
occurring on Artocarpus heterophyllus Lam. [Internet] [Thesis]. University of Pune; 2012. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/3420.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bapat GS. Studies in Phellinus S L with special reference to those
occurring on Artocarpus heterophyllus Lam. [Thesis]. University of Pune; 2012. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/3420
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
12.
Merajul Islam Robab.
Studies on Solanum nigrum Infected with Root-knot
Nematode (Meloidogyne incognita); -.
Degree: Botany, 2011, Aligarh Muslim University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/13146
► Agricultural soils not only support plants but also harbour a large number of plant pathogenic organisms, of which plant parasitic nematodes are of great significance.…
(more)
▼ Agricultural soils not only support plants but also
harbour a large number of plant pathogenic organisms, of which
plant parasitic nematodes are of great significance. The nematodes
attack vegetables, ornamental and medicinal plants, all over the
world leading to causing huge economic losses. Root-knot nematode,
Meloidogyne incognita is one of the most prevalent nematode pest of
vegetables and other crops in Uttar Pradesh, a province in the
northern part of India. Meloidogyne incognita causes morphological,
anatomical, and physiological attractions in the plant and the
affected tissues. Root-knot nematodes Meloidogyne spp. attacks the
underground parts of the plants, where they induce the development
of abnormal growth on the stem and the root. These changes involve
root galling, giant cell formation, and disruption in translocation
of water and mineral nutrients. In some plants larger galls are
produced at the base of the stem in addition to root galls. The
nematodes after its second-stage of molting enter the developing
roots, migrate intercellularly and induces giant cell. One of the
major anatomical abnormality after infection is disturbance in the
vascular system. The root-knot nematode Meloidogyne incognita
(Kofoid and White) newlineChitwood has been reported to cause huge
monetary losses to the crops belonging to medicinal plants,
vegetables and some fruit plants as well as wild plants throughout
the world. In Ayurveda, an Indian Traditional System of medicines,
about 2,000 plant species are considered to have medicinal
properties, on the other hand Chinese Pharmacopoeia lists over
5,700 traditional medicines, most of which are of plant origin. The
family Solanaceae is one of the most important families in plant
Kingdom, because it is one of the largest families comprising more
than 3,000 species. Its members are enthobotanically important and
extensively utilized by humans all over the world.
Summary p.110-116, Bibliography
p.117-171
Advisors/Committee Members: Hisamuddin.
Subjects/Keywords: Botany
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APA ·
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MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Robab, M. I. (2011). Studies on Solanum nigrum Infected with Root-knot
Nematode (Meloidogyne incognita); -. (Thesis). Aligarh Muslim University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/13146
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Robab, Merajul Islam. “Studies on Solanum nigrum Infected with Root-knot
Nematode (Meloidogyne incognita); -.” 2011. Thesis, Aligarh Muslim University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/13146.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Robab, Merajul Islam. “Studies on Solanum nigrum Infected with Root-knot
Nematode (Meloidogyne incognita); -.” 2011. Web. 02 Mar 2021.
Vancouver:
Robab MI. Studies on Solanum nigrum Infected with Root-knot
Nematode (Meloidogyne incognita); -. [Internet] [Thesis]. Aligarh Muslim University; 2011. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13146.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Robab MI. Studies on Solanum nigrum Infected with Root-knot
Nematode (Meloidogyne incognita); -. [Thesis]. Aligarh Muslim University; 2011. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13146
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
13.
Sharma, Shweta.
Studies on fusarium solani meloidogyne javanica disease
complex in coleus forskohlii and its management; -.
Degree: Botany, 2012, Aligarh Muslim University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/13177
► The present work deals with Studies on Fusarium solani - newlineMeloidogyne javanica disease complex in Coleus forskohlii and its management . Aspect wise abstract of…
(more)
▼ The present work deals with Studies on Fusarium
solani - newlineMeloidogyne javanica disease complex in Coleus
forskohlii and its management . Aspect wise abstract of the results
is presented below: To determine the inoculum threshold level of
root - knot nematode, Meloidogyne javanica, the cuttings of coleus,
Coleus forskohlii var. newlineSelection - K plants were separately
inoculated with different inoculums levels of M. javanica (250,
500, 1000, 2000, 4000 and 8000 J2 / kg soil). newlineIt was
observed that with an increase in the level of inoculum there was a
progressive increase in host infestation by root - knot nematode as
indicated by the number of galls / root system as well as the
population ofnematode. Moreover, the rate of nematode
multiplication was reduced with the increase in the inoculum
density of M. javanica. The galls of varying size developed on both
lateral as well as tuberous roots of the plants. Besides galling in
roots, some other typical symptoms in the form of forking of
tuberous roots and appearance of galls at the base of the stem near
the soil level were also observed at and above 2000 J2 / kg soil.
The nematode density particularly at 1000 J2 and above inoculums
levels also exhibited varying degree of stunted growth in plants
accompanied with premature yellowing, drying and shedding of
leaves, giving the infected plants an unhealthy appearance. In the
highest inoculum level, the diseased plants also showed temporary
day time wilting during hot hours even in the presence of enough
soil moisture. The damaging threshold level of M. javanica on
Coleus forskohlii was 1000 J2 / kg soil as the population at this
level was associated with the significant decline in plant growth
parameters including yield of tuber and forskolin. Irrespective of
inoculum levels, the root - rot fungus, Fusarium solani neither
caused any damage nor produced any symptoms in coleus, the reason
being that this fungus is not pathogenic to coleus. Coleus
seedlings were inoculated with M. javanica (1000 J2 / kg soil) and
F.
References p.151-197
Advisors/Committee Members: Khan, Tabreiz Ahmad.
Subjects/Keywords: Botany
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APA (6th Edition):
Sharma, S. (2012). Studies on fusarium solani meloidogyne javanica disease
complex in coleus forskohlii and its management; -. (Thesis). Aligarh Muslim University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/13177
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sharma, Shweta. “Studies on fusarium solani meloidogyne javanica disease
complex in coleus forskohlii and its management; -.” 2012. Thesis, Aligarh Muslim University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/13177.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sharma, Shweta. “Studies on fusarium solani meloidogyne javanica disease
complex in coleus forskohlii and its management; -.” 2012. Web. 02 Mar 2021.
Vancouver:
Sharma S. Studies on fusarium solani meloidogyne javanica disease
complex in coleus forskohlii and its management; -. [Internet] [Thesis]. Aligarh Muslim University; 2012. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13177.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sharma S. Studies on fusarium solani meloidogyne javanica disease
complex in coleus forskohlii and its management; -. [Thesis]. Aligarh Muslim University; 2012. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/13177
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Mahatma Gandhi University
14.
Rajasree, R.
Studies on the endomycorrhizal synthesis in Seasamum
indicum L; -.
Degree: Botany, 2009, Mahatma Gandhi University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/18219
► The field study on AM fungal association in sesame newlineconducted during the first phase of the present newlineinvestigation revealed the existence of wide variation in…
(more)
▼ The field study on AM fungal association in sesame
newlineconducted during the first phase of the present
newlineinvestigation revealed the existence of wide variation in
root newlinecolonization and spore density in the rhizosphere
soils. newlineSoil characters had a profound influence on both root
newlinecolonization and spore density in soil. G. dimorphicum was
newlinethe most dominant species associated with sesame grown
newlinein the region under study. newlineThe developmental pattern
of fungal structures newlinediffered with AM species infecting
sesame. Among the newlinedifferent AM fungi more fungal structures
such as newlineintercellular hyphae vesicles and arbuscules were
newlineproduced by plants inoculated with G. versiformae.
newlineDevelopment of fungal structures was more vigorous
newlineduring early stages of plant growth. newlineThe indigenous
isolates of AM fungi improved the newlinegrowth and yield
characters of sesame. Among the newlinedifferent indigenous AM
fungi, G. dimorphicum was the newlinemost efficient one in
enhancing the growth and yield of newlinesesame. newlineInfectivity
of spores of G. dimorphicum on sesame newlinevaried after
incubation in different soil types. Addition of P newlineto soil
negatively affected the infectivity of AM fungi. The newlinespores
of G. dimorphicum retained its infectivity upto five newlinemonths
in most soils in the absence of host. newlineScreening of field
grown sesame accessions revealed newlinethat genotype dependent
variation exists in sesame. newlineSesame accessions in general
recorded a very low level of newlineAM colonization in roots.
However, the crop was greatly newlinedependent on indigenous AM
colonization for growth and newlinenutrition. newlineGrowth yield,
biochemical components and P newlinenutrition were improved by AM
inoculation at the minimal newlineuse of P fertilizers and
irrigation. The combined effect of newlineAM fungi, P fertilizer
and irrigation helped the plant in newlineenhancing the above
parameters. newlineThe tripartite interaction involving AM fungi,
newlineAzospirillum and sesame at the moderate level of NP
newlinefertilizers led to an increase in AM colonization, growth
and newlinenutrient status of the crop.
References i-lxxvii
Advisors/Committee Members: Harikumar, V S.
Subjects/Keywords: Botany
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APA (6th Edition):
Rajasree, R. (2009). Studies on the endomycorrhizal synthesis in Seasamum
indicum L; -. (Thesis). Mahatma Gandhi University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/18219
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rajasree, R. “Studies on the endomycorrhizal synthesis in Seasamum
indicum L; -.” 2009. Thesis, Mahatma Gandhi University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/18219.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rajasree, R. “Studies on the endomycorrhizal synthesis in Seasamum
indicum L; -.” 2009. Web. 02 Mar 2021.
Vancouver:
Rajasree R. Studies on the endomycorrhizal synthesis in Seasamum
indicum L; -. [Internet] [Thesis]. Mahatma Gandhi University; 2009. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/18219.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rajasree R. Studies on the endomycorrhizal synthesis in Seasamum
indicum L; -. [Thesis]. Mahatma Gandhi University; 2009. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/18219
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
15.
Hashmi, Nadeem.
Influence of gamma irradiated sodium alginate and some
macronutrients on the essential oil production in Foeniculum
Vulgare Mill; -.
Degree: Botany, 2013, Aligarh Muslim University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/21074
► During the past decades there has been a considerable interest in the use of herbal newlinemedicines in the world as people strive to stay healthy…
(more)
▼ During the past decades there has been a
considerable interest in the use of herbal newlinemedicines in the
world as people strive to stay healthy in condition of chronic
stress pollution environment and other similar situations Medicinal
plants play pivotal role in providing primary health care services
to rural people particularly in the remote parts of the developing
countries The economic ingredient of fennel fruit is its volatile
essential oil The essential oil EO of fennel plays an important
role in pharmaceutical and other industries as well The major
constituents of the EO of fennel fruit are trans anethole and
fenchone which have paramount newlineimportance in pharmaceutical
and other industries It also is of high value in perfumery and
confectionery products In the recent years the demand for fennel
fruit and EO has been increasing exponentially because of its
amazing therapeutic value and due to its pharmaceutical and
perfumery characteristics imparted by its fragrant constituents
newline
Bibliography p.90-110
Advisors/Committee Members: Khan, Masroor A.
Subjects/Keywords: Botany
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APA ·
Chicago ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hashmi, N. (2013). Influence of gamma irradiated sodium alginate and some
macronutrients on the essential oil production in Foeniculum
Vulgare Mill; -. (Thesis). Aligarh Muslim University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/21074
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hashmi, Nadeem. “Influence of gamma irradiated sodium alginate and some
macronutrients on the essential oil production in Foeniculum
Vulgare Mill; -.” 2013. Thesis, Aligarh Muslim University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/21074.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hashmi, Nadeem. “Influence of gamma irradiated sodium alginate and some
macronutrients on the essential oil production in Foeniculum
Vulgare Mill; -.” 2013. Web. 02 Mar 2021.
Vancouver:
Hashmi N. Influence of gamma irradiated sodium alginate and some
macronutrients on the essential oil production in Foeniculum
Vulgare Mill; -. [Internet] [Thesis]. Aligarh Muslim University; 2013. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/21074.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hashmi N. Influence of gamma irradiated sodium alginate and some
macronutrients on the essential oil production in Foeniculum
Vulgare Mill; -. [Thesis]. Aligarh Muslim University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/21074
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
16.
Singh, Neelu.
Studies on the inteaction of meloidogyne javanica
ralstonia solanacearum and xanthomonas campestris pv Vesicatoria on
tomato; -.
Degree: Botany, 2014, Aligarh Muslim University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/21076
► Five hundred root and soil samples were collected from tomato fields of newlineAligarh district These samples were examined for the presence of root knot nematode…
(more)
▼ Five hundred root and soil samples were collected
from tomato fields of newlineAligarh district These samples were
examined for the presence of root knot nematode newlineMeloidogyne
spp pathogenic bacteria Ralstonia solanacearum and Xanthomonas
newlinecampestris pv vesicatoria Out of these samples root knot
nematode Meloidogyne newlinespp were found in 402 samples with 80 4
frequency of occurrence while R newlinesolanacearum and X
campestris pv vesicatoria were isolated from 329 and 245
newlinesamples with 65 8 and 49 0 frequency of occurrence
respectively Out of 402 newlinesamples infected with Meloidogyne
spp in 61 samples Meloidogyne spp was newlinepresent alone while in
130 samples it was present concomitantly with R newlinesolanacearum
However Meloidogyne spp was found together with X campestris
newlinepv vesicatoria in 47 samples while 14 samples were found
concomitantly infected newlinewith R solanacearum and X campestris
pv vesicatoria Moreover R solanacearum newlineand X campestris pv
vesicatoria were found alone in 21 and 20 samples respectively
newlinewhile in 164 samples all three pathogens i e Meloidogyne spp
R solanacearum and newlineX campestris pv vesicatoria were present
concomitantly Out of total 402 samples newlineM javanica was
present in 199 M incognita in 179 and M arenaria in 24 samples
newlineSeveral samples revealed mixed infection of Meloidogyne spp
newline
Bibliography p.142-194
Advisors/Committee Members: Siddiqui, Zaki A.
Subjects/Keywords: Botany
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Singh, N. (2014). Studies on the inteaction of meloidogyne javanica
ralstonia solanacearum and xanthomonas campestris pv Vesicatoria on
tomato; -. (Thesis). Aligarh Muslim University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/21076
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Singh, Neelu. “Studies on the inteaction of meloidogyne javanica
ralstonia solanacearum and xanthomonas campestris pv Vesicatoria on
tomato; -.” 2014. Thesis, Aligarh Muslim University. Accessed March 02, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/21076.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Singh, Neelu. “Studies on the inteaction of meloidogyne javanica
ralstonia solanacearum and xanthomonas campestris pv Vesicatoria on
tomato; -.” 2014. Web. 02 Mar 2021.
Vancouver:
Singh N. Studies on the inteaction of meloidogyne javanica
ralstonia solanacearum and xanthomonas campestris pv Vesicatoria on
tomato; -. [Internet] [Thesis]. Aligarh Muslim University; 2014. [cited 2021 Mar 02].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/21076.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Singh N. Studies on the inteaction of meloidogyne javanica
ralstonia solanacearum and xanthomonas campestris pv Vesicatoria on
tomato; -. [Thesis]. Aligarh Muslim University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/21076
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Stellenbosch University
17.
Mukhadi, Fulufhelo Licken.
Phenology of indigenous and alien vascular flowering plants on sub-Antarctic Marion Island.
Degree: MSc, Botany and Zoology, 2011, Stellenbosch University
URL: http://hdl.handle.net/10019.1/6890
► ENGLISH ABSTRACT: Species’ seasonal behaviour is of paramount importance in understanding community functioning and dynamics. Recently, plant phenology has further gained significance as a reliable…
(more)
▼ ENGLISH ABSTRACT: Species’ seasonal behaviour is of paramount importance in understanding community functioning
and dynamics. Recently, plant phenology has further gained significance as a reliable indicator of
climate change impacts. Despite the importance of understanding plant dynamics, there are
relatively few plant phenological records for the sub-Antarctic region, and where records exist they
are often not extensive. Sub-Antarctic Marion Island, typical of Southern Ocean Islands, offers a
useful setting for addressing these knowledge gaps. This study documented the vegetative and
reproductive phenologies (or aggregate phenological patterns) of twelve indigenous and three alien
vascular plant species on the island. The phenological differences among the species and distinct
seasonal groupings (e.g. early, intermediate and late species) were examined. I also investigated the
phenological differences among the indigenous and alien plant species. Furthermore, the onset of
selected reproductive phenophases from the current records was compared with historical records
for determining the extent of climate change-related alterations in phenology. Phenological data
were collected fortnightly on five, 5 m x 5 m permanent plots per species (except for a few species)
for a full growing season. Thus the sample size is n = 5 for all plant species except for Crassula
moschata (n = 4), Juncus effusus (n=4) and Rumex acetosella (n=1). Sites of the same species were
separated by at least 500 m except for the alien plant, Juncus effusus, where all four known
populations were selected despite two of these populations being < 500 m apart. This study
indicated that Marion Island plants grow throughout the year with no major peaks except in
Azorella selago and Acaena magellanica which showed winter dormancy. However, reproduction
in most plant species predominately occurred in spring and summer months. Pringlea
antiscorbutica and Poa cookii were the first two species to set flower buds in September while most
species dispersed their seeds in summer except for Agrostis magellanica and Crassula moschata
which dispersed in early autumn. Distinct from most temperate systems, the reproductive
seasonality displayed by Marion Island plant species is explained more by daylength than by
temperature, perhaps due to the region’s typical thermal aseasonality. Interestingly, many cooccurring
species and/or clades across the Falkland, Kerguelen, Macquarie and South Georgia
Islands also showed similar flowering onset date to the Marion Island plants, further confirming
their daylength sensitivity. However, other external factors seem to come into play at later events of
reproduction. Consequently, fruit maturation time of similar species across the sub-Antarctic islands
varied substantially despite the plants having flowered in the same month. Although plant species
showed similar reproductive seasonality, there were significant differences among species phenologies i.e. phenophase timing, duration and peak occurrence…
Advisors/Committee Members: Chown, Steven L., Shaw, Justine D., Stellenbosch University. Faculty of Science. Dept. of Botany and Zoology..
Subjects/Keywords: Botany
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mukhadi, F. L. (2011). Phenology of indigenous and alien vascular flowering plants on sub-Antarctic Marion Island. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/6890
Chicago Manual of Style (16th Edition):
Mukhadi, Fulufhelo Licken. “Phenology of indigenous and alien vascular flowering plants on sub-Antarctic Marion Island.” 2011. Masters Thesis, Stellenbosch University. Accessed March 02, 2021.
http://hdl.handle.net/10019.1/6890.
MLA Handbook (7th Edition):
Mukhadi, Fulufhelo Licken. “Phenology of indigenous and alien vascular flowering plants on sub-Antarctic Marion Island.” 2011. Web. 02 Mar 2021.
Vancouver:
Mukhadi FL. Phenology of indigenous and alien vascular flowering plants on sub-Antarctic Marion Island. [Internet] [Masters thesis]. Stellenbosch University; 2011. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10019.1/6890.
Council of Science Editors:
Mukhadi FL. Phenology of indigenous and alien vascular flowering plants on sub-Antarctic Marion Island. [Masters Thesis]. Stellenbosch University; 2011. Available from: http://hdl.handle.net/10019.1/6890
Stellenbosch University
18.
Curran, Helen R. (Helen Rae).
Thecaphora anther-smut fungi : ecology and implications for CFR Oxalis species.
Degree: MSc, Botany and Zoology, 2012, Stellenbosch University
URL: http://hdl.handle.net/10019.1/20293
► ENGLISH ABSTRACT: Only a limited number of systems involving anther-smut fungi have been studied, usually due to the economic significance of their crop plant hosts.…
(more)
▼ ENGLISH ABSTRACT: Only a limited number of systems involving anther-smut fungi have been studied, usually due to the economic significance of their crop plant hosts. A smut fungus of the genus Thecaphora has been discovered infecting Oxalis hosts in South Africa. This pathogenic fungus, Thecaphora capensis, produces dark-coloured spores in the anthers of host flowers, rendering it an anther-smut fungus. The host genus is the seventh largest plant genus in the Cape Floristic Region (CFR) and the largest geophytic genus of this region. Nine Oxalis species that host T. capensis have been identified across a wide distribution in the CFR of South Africa. A preliminary assessment of T. capensis infections of Oxalis was conducted in 2009, which provided a foundation for further research into the ecological and evolutionary consequences of hosting this fungus.
In this study, a comprehensive host diversity assessment was conducted to determine the extent of infected Oxalis individuals within the CFR. Three new Oxalis host species for Thecaphora capensis were discovered. This brings the total number of known hosts to twelve. The morphological and reproductive effects of the fungus were assessed on two host species (O. incarnata and O. lanata) by comparing healthy and infected individuals of these species. Infection by Thecaphora capensis had a significantly negative effect on both of these factors. Host resources appear to be co-opted for fungal spore production, since floral morphological characters of infected individuals were reduced in size. Furthermore, infection by T. capensis ensured near-universal sterility in both hosts.
Differences in floral characters and pollinator preferences for healthy Oxalis incarnata and O. lanata individuals from disease-free and diseased populations were compared to determine the evolutionary influence of Thecaphora capensis infections. It was shown that this pathogen can have a significant evolutionary influence on its hosts, showing its ability to shape flower size and pollinator activity in O. lanata, but not in O. incarnata. A need has therefore been identified to assess these evolutionary forces independently for each host and its pathogen before making erroneous assumptions for conservation practices. Plant pollinators play an integral role in plant fitness. Pollinator movements within a population are important when between-flower spore transfer by pollinators increases the likelihood of new infections. Pollinator movements may be influenced by host density and the frequency of diseased individuals, amongst other factors. Pollinators were found to mediate Thecaphora capensis spore transfers within diseased Oxalis populations. Host density and disease frequency affected the number of spores transferred under field and standardized conditions. More research is required to investigate confounding factors in these complex systems.
This study highlighted the complexities of a fungal-plant-insect relationship, the evolutionary consequences of such fungal infections and the various…
Advisors/Committee Members: Roets, F., Dreyer, L. L., Stellenbosch University. Faculty of Science. Dept. of Botany and Zoology..
Subjects/Keywords: Botany
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Curran, H. R. (. R. (2012). Thecaphora anther-smut fungi : ecology and implications for CFR Oxalis species. (Masters Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/20293
Chicago Manual of Style (16th Edition):
Curran, Helen R (Helen Rae). “Thecaphora anther-smut fungi : ecology and implications for CFR Oxalis species.” 2012. Masters Thesis, Stellenbosch University. Accessed March 02, 2021.
http://hdl.handle.net/10019.1/20293.
MLA Handbook (7th Edition):
Curran, Helen R (Helen Rae). “Thecaphora anther-smut fungi : ecology and implications for CFR Oxalis species.” 2012. Web. 02 Mar 2021.
Vancouver:
Curran HR(R. Thecaphora anther-smut fungi : ecology and implications for CFR Oxalis species. [Internet] [Masters thesis]. Stellenbosch University; 2012. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10019.1/20293.
Council of Science Editors:
Curran HR(R. Thecaphora anther-smut fungi : ecology and implications for CFR Oxalis species. [Masters Thesis]. Stellenbosch University; 2012. Available from: http://hdl.handle.net/10019.1/20293
University of KwaZulu-Natal
19.
Laufer, Zsanett.
Occurrence and properties of the multicopper oxidases laccase and tyrosinase in lichens.
Degree: PhD, Botany, 2013, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/9909
► The work presented in this thesis describes the occurrence and properties of two multicopper oxidases derived from lichens. Despite numerous data on laccases and tyrosinases…
(more)
▼ The work presented in this thesis describes the occurrence and properties of two multicopper oxidases derived from lichens. Despite numerous data on laccases and tyrosinases in fungi and flowering plants, this is the first report of the occurrence of these enzymes in lichenized ascomycetes. Extracellular laccase and tyrosinase activity was measured in 50 species of lichens from different taxonomic groupings and contrasting habitats. Out of 27 species tested from suborder Peltigerineae, all displayed laccase and tyrosinase activity that correlated to each other, while activity was absent in species tested from other lichen groups. Identification of the enzymes as laccases and tyrosinases was confirmed by the ability of lichen thalli or leachates to readily metabolize substrates such as 2,2’-azino(bis-3-ethylbenzthiazoline-6-sulfonate) (ABTS), syringaldazine and o-tolidine in case of laccase and L-dihydroxyphenylalanine (L-DOPA), Ltyrosine
and epinephrine in case of tyrosinase in the absence of hydrogen peroxide. The activities of both enzymes were highly sensitive to cyanide and azide, and tyrosinase activity was sensitive to hexylresorcinol. Laccase activity had typical pH and temperature optima and an absorption spectrum with a peak at 614 nm. Tyrosinases could be activated by sodium dodecyl
sulphate (SDS) and had typical tyrosinase molecular masses of approx. 60 kDa. The diversity of laccase isoforms in 20 lichen species from suborder Peltigerineae was investigated. The molecular masses of the active forms of most laccases varied between 135 and 190 kDa, although some lichens within the family Peltigeraceae had laccases with higher masses, typically varying from 200 to over 350 kDa. Most species contained one oligomeric laccase isoform. Desiccation and wounding stimulated laccase activity, while only wounding stimulated tyrosinase activity. The ability of laccases to decolorize dye is a classic attribute of laccases, and one with biotechnological potential. The ability of eight lichen species to decolourize different types of dyes was therefore tested. Interestingly, results showed that not only species belonging to suborder Peltigerineae but also species from other lichen group effectively decolourised dyes after 48 h suggesting that other oxidases appear to have ability to decolorize. Hopefully, our
work could contribute to the better knowledge and application of lichen multicopper oxidases.
Advisors/Committee Members: Beckett, Richard Peter. (advisor).
Subjects/Keywords: Botany.
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Record Details
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Laufer, Z. (2013). Occurrence and properties of the multicopper oxidases laccase and tyrosinase in lichens. (Doctoral Dissertation). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/9909
Chicago Manual of Style (16th Edition):
Laufer, Zsanett. “Occurrence and properties of the multicopper oxidases laccase and tyrosinase in lichens.” 2013. Doctoral Dissertation, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/9909.
MLA Handbook (7th Edition):
Laufer, Zsanett. “Occurrence and properties of the multicopper oxidases laccase and tyrosinase in lichens.” 2013. Web. 02 Mar 2021.
Vancouver:
Laufer Z. Occurrence and properties of the multicopper oxidases laccase and tyrosinase in lichens. [Internet] [Doctoral dissertation]. University of KwaZulu-Natal; 2013. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/9909.
Council of Science Editors:
Laufer Z. Occurrence and properties of the multicopper oxidases laccase and tyrosinase in lichens. [Doctoral Dissertation]. University of KwaZulu-Natal; 2013. Available from: http://hdl.handle.net/10413/9909
University of KwaZulu-Natal
20.
Okem, Ambrose.
Heavy metals in South African medicinal plants with refence to safety, efficacy and quality.
Degree: Botany, 2015, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/12216
► The trend in commercialization of medicinal plant products reflects the excessive exploitation of medicinal plants from the wild populations. Due to widespread soil pollution, there…
(more)
▼ The trend in commercialization of medicinal plant products reflects the excessive exploitation of medicinal plants from the wild populations. Due to widespread soil pollution, there is a likelihood that medicinal plants could be harvested from heavy metal-contaminated soils and thus pose a potential health threat to consumers. Unregulated procurement coupled with the unhygienic trading environment, poor post-harvest handling and processing, represent major routes of heavy metal contamination in medicinal plant products.
A comparative screening was carried out to assess the levels of heavy metal contamination in some frequently used South African medicinal plants obtained from out-door traditional medicinal markets and muthi shops. Plant samples were digested using a microwave-assisted acid digestion system and the elemental content determined using inductively coupled plasma optical emission spectrophotometry (ICP-OES). There was multi-elemental contamination in the investigated medicinal plants with elevated levels of Fe, Al and Mn detected in most of the samples and levels of As and Hg were above the World Health Organization limits of 1 mg kg-1 and 2 μg kg-1 respectively. The high levels of metal contaminations in some of the investigated medicinal plants is a health concern and urgent measures are needed to protect the health of consumers. Samples were quantified for their total phenolic and flavonoid contents as well as screened for antibacterial activity. Variable phenolic and flavonoid composition and antibacterial activity showed that the quality and efficacy of medicinal plants sold at traditional medicine markets is compromised. Data obtained from elemental analysis was subjected to hierarchical cluster analysis which categorized samples into four main groups with samples within a group having relatively similar metal analyte compositions. Hierarchical cluster analysis proved to be a valuable tool in this preliminary screening of heavy metal contamination in medicinal plants and can potentially be used to develop a large database for easy monitoring of plant species with hyperaccumulative potentials. Information such as site of collection, plant species and plant part could be a valuable approach to ensure safety, efficacy and quality of medicinal plants sold at traditional medicine markets.
Exposure to Cd and Al for six weeks in a pot trial induced responses in Bulbine natalensis, Drimia elata and Hypoxis hemerocallidea and these included variations in heavy metal uptake, growth parameters and physiological changes. Generally, application of Cd and Al at low concentrations (2 and 500 mg L-1 respectively) enhanced growth parameters in the three plant species compared to the control plants. However, at the highest concentrations of Cd 10 and Al 1500 mg L-1 respectively, there was significant growth inhibition. Hypoxis hemerocallidea exhibited good tolerance to Al exposure up to 1000 mg L-1 compared to the other plant species. Some of the physiological changes such as accumulation of free-proline increased…
Advisors/Committee Members: Van Staden, Johannes. (advisor), Finnie, Jeffrey Franklin. (advisor), Stirk, Wendy Ann. (advisor), Southway, Colin. (advisor), Street, Renée Anne. (advisor).
Subjects/Keywords: Botany.
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APA (6th Edition):
Okem, A. (2015). Heavy metals in South African medicinal plants with refence to safety, efficacy and quality. (Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/12216
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Okem, Ambrose. “Heavy metals in South African medicinal plants with refence to safety, efficacy and quality.” 2015. Thesis, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/12216.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Okem, Ambrose. “Heavy metals in South African medicinal plants with refence to safety, efficacy and quality.” 2015. Web. 02 Mar 2021.
Vancouver:
Okem A. Heavy metals in South African medicinal plants with refence to safety, efficacy and quality. [Internet] [Thesis]. University of KwaZulu-Natal; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/12216.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Okem A. Heavy metals in South African medicinal plants with refence to safety, efficacy and quality. [Thesis]. University of KwaZulu-Natal; 2015. Available from: http://hdl.handle.net/10413/12216
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of KwaZulu-Natal
21.
Madikizela, Balungile.
Pharmacological evaluation of South African medicinal plants used for treating tuberculosis and related symptoms.
Degree: Botany, 2015, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/12221
► Respiratory ailments are major human killers, especially in developing countries including South Africa. Tuberculosis is one of the most prevalent infectious respiratory tract disease posing…
(more)
▼ Respiratory ailments are major human killers, especially in developing countries including South Africa. Tuberculosis is one of the most prevalent infectious respiratory tract disease posing a major threat to human healthcare worldwide. This disease is a highly contagious airborne bacterial disease that usually infects the lungs and sometimes other body parts. Tuberculosis spreads easily in overcrowded conditions from one person with an active respiratory disease to another via droplets that are emitted when they sneeze or cough. Approximately two million deaths that occur worldwide per annum are caused by tuberculosis and about 285,000 cases occur in South Africa. This is the seventh highest total number in the world. The emergence of drug-resistant tuberculosis and other pathogenic diseases over the past decades makes this disease a serious threat to human health worldwide. Emerging drug-resistant tuberculosis strains and the long duration of treatment has established an urgent need to search for new effective agents. According to a 2012 report by the World Health Organisation (WHO), South Africa, China, India and Russia are the countries with the highest prevalence of multi drug-resistant (MDR) tuberculosis.
Most researchers in South Africa have focused on evaluating the antimycobacterial activity of medicinal plants against bacterial strains that cause tuberculosis, but there has not been sufficient focus on the related ailments. Therefore, one of the aims of the present study was the evaluation of the antimicrobial properties of the selected medicinal plants against Mycobacterium species and other bacterial strains related to respiratory infection. The floral diversity of South Africa has a potential for yielding new bioactive compounds, therefore pharmacological screening of plant extracts from this region is important. The aim of this study was the pharmacological evaluation of plants that are used traditionally in South Africa to treat tuberculosis and related symptoms against microorganisms that cause respiratory ailments, and the identification of compounds from antimicrobial active plant extracts.
Ten plants: Abrus precatorius subsp. africanus (leaves and seeds), Asparagus africanus (leaves), Asparagus falcatus (leaves), Brunsvigia grandiflora (bulb), Ficus sur (bark and roots), Indigofera arrecta (leaves and roots), Leonotis intermedia (leaves and stem), Pentanisia prunelloides (leaves and roots), Polygala fruticosa (whole plant), and Terminalia phanerophlebia (leaves, roots and twigs) were selected based on a survey of available
literature of medicinal plants used in South Africa for the treatment of tuberculosis and related symptoms. Ground plant material from different plant parts of the 10 plants were extracted sequentially with four solvents: petroleum ether (PE), dichloromethane (DCM), 80% ethanol (EtOH) as well as water, and a total of 68 extracts were produced. The plant extracts of the selected plants were evaluated for antibacterial activity against four microorganisms (Klebsiella pneumoniae,…
Advisors/Committee Members: Van Staden, Johannes. (advisor), Finnie, Jeffrey Franklin. (advisor).
Subjects/Keywords: Botany.
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APA (6th Edition):
Madikizela, B. (2015). Pharmacological evaluation of South African medicinal plants used for treating tuberculosis and related symptoms. (Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/12221
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Madikizela, Balungile. “Pharmacological evaluation of South African medicinal plants used for treating tuberculosis and related symptoms.” 2015. Thesis, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/12221.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Madikizela, Balungile. “Pharmacological evaluation of South African medicinal plants used for treating tuberculosis and related symptoms.” 2015. Web. 02 Mar 2021.
Vancouver:
Madikizela B. Pharmacological evaluation of South African medicinal plants used for treating tuberculosis and related symptoms. [Internet] [Thesis]. University of KwaZulu-Natal; 2015. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/12221.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Madikizela B. Pharmacological evaluation of South African medicinal plants used for treating tuberculosis and related symptoms. [Thesis]. University of KwaZulu-Natal; 2015. Available from: http://hdl.handle.net/10413/12221
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of KwaZulu-Natal
22.
Rodger, James Gordon.
Consequences of self-fertilisation for fecundity and progeny performance in invasive plants.
Degree: PhD, Botany, 2013, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/9863
► Plants that can self-fertilise should, on average, be more invasive than plants that can not self-fertilise because they can reproduce regardless of the availability of…
(more)
▼ Plants that can self-fertilise should, on average, be more invasive than plants that can not self-fertilise because they can reproduce regardless of the availability of mates and pollinators. Self-fertilisation should have a strong effect on invasiveness because, to become invasive, introduced plants have to pass through bottlenecks of low plant abundance when mates and pollinators are likely to be scarce. Under these conditions, reproduction of plants that can not self-fertilise is often limited by pollen receipt. Selfing may thus contribute to invasiveness by alleviating pollen limitation Allee effects (pollen limitation caused by low abundance) especially as theoretical work indicates that ability to invade and rate of invasion are highly sensitive to fecundity of small and isolated populations and single individuals. Recently, a correlation between ability to self-fertilise and invasiveness has been observed in several invasive floras, consistent with the hypothesis that species that can self-fertilise should be more invasive. However, it has not yet been demonstrated that this
relationship arises from reproductive assurance. To establish the causal basis of a correlation between a plant trait and invasiveness, a mechanism linking that trait to invasiveness must be demonstrated. For this it is necessary to show firstly that the trait actually affects performance in the introduced range and secondly that plant performance affects invasiveness. Self-fertilisation is hypothesised to increase invasiveness by enhancing reproductive performance. The first step in testing this hypothesis is therefore to show that being able to self-fertilise increases fecundity, i.e. that it provides reproductive assurance. However, progeny from self-fertilisation often suffer from inbreeding depression – they perform worse than those from cross-fertilisation – so it is also necessary to show that this cost does not outweigh the reproductive assurance benefit of selfing. So far, reproductive assurance has been assessed in only a few invasive plant species. These studies did not assess inbreeding depression and only one investigated reproductive assurance in relation to abundance, finding no relationship. In this thesis I have sought to understand the importance of self-fertilisation for reproduction of invasive plants in the introduced range through case studies. In particular, I
assessed whether reproductive assurance from self-fertilization alleviates Allee effects via pollen limitation. To do this I tested whether pollen limitation and reproductive assurance were greater at low plant abundance. Further, I conducted progeny trials to assess inbreeding
depression, as this cost of selfing potentially negates reproductive assurance benefits. I also conducted observations and experiments to identify the principle pollinators of my study species as reproductive assurance and its relationship to plant abundance depend on pollinator
visitation, The Australian trees Acacia mearnsii and A. dealbata are highly invasive in the study region…
Advisors/Committee Members: Johnson, Steven Dene. (advisor), Van Kleunen, Mark. (advisor).
Subjects/Keywords: Botany.
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APA (6th Edition):
Rodger, J. G. (2013). Consequences of self-fertilisation for fecundity and progeny performance in invasive plants. (Doctoral Dissertation). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/9863
Chicago Manual of Style (16th Edition):
Rodger, James Gordon. “Consequences of self-fertilisation for fecundity and progeny performance in invasive plants.” 2013. Doctoral Dissertation, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/9863.
MLA Handbook (7th Edition):
Rodger, James Gordon. “Consequences of self-fertilisation for fecundity and progeny performance in invasive plants.” 2013. Web. 02 Mar 2021.
Vancouver:
Rodger JG. Consequences of self-fertilisation for fecundity and progeny performance in invasive plants. [Internet] [Doctoral dissertation]. University of KwaZulu-Natal; 2013. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/9863.
Council of Science Editors:
Rodger JG. Consequences of self-fertilisation for fecundity and progeny performance in invasive plants. [Doctoral Dissertation]. University of KwaZulu-Natal; 2013. Available from: http://hdl.handle.net/10413/9863
West Virginia University
23.
Kempinski, Chase F.
Understanding the role of ascorbic acid and GDP-mannose pyrophosphorylase affecting ammonium sensitivity, genome stability and flowering time in Arabidopsis thaliana.
Degree: MS, Biology, 2011, West Virginia University
URL: https://doi.org/10.33915/etd.4740
;
https://researchrepository.wvu.edu/etd/4740
► L-ascorbic acid is an important antioxidant in both plants and animals. In plants, it is important for detoxifying reactive oxygen species that are produced during…
(more)
▼ L-ascorbic acid is an important antioxidant in both plants and animals. In plants, it is important for detoxifying reactive oxygen species that are produced during photosynthesis and cellular metabolism. It also contributes to several facets of plant growth as an enzyme cofactor, signaling molecule, and a precursor to several other metabolites. It has been implicated in the control of flowering time and senescence as well as several other growth processes largely through work with the ascorbic acid-deficient vtc mutants of Arabidopsis thaliana. Biochemical and genetic experiments have identified several pathways contributing to ascorbic acid biosynthesis, with the D-mannose/L-galactose pathway predominantly responsible for the accumulation of ascorbic acid in Arabidopsis. Key enzymes in this pathway include GDPmannose pyrophosphorylase (encoded by VTC1), GDP-galactose phosphorylase (encoded by VTC2/5), and galactose-1-P phosphatase VTC4 genes.;Nitrogen is one of the crucial minerals for plant growth and often one of the most limiting in nature. Ammonium is the favored form of nitrogen taken up by plants, but excess levels lead to toxicity since ammonia (the conjugate base) can diffuse across membranes and depolarize membrane potentials. Recent work has indicated that the enzyme GDP-mannose pyrophosphorylase (VTC1 in Arabidopsis thaliana), which generates the essential nucleotide sugar GDP-mannose, important for protein N-glycosylation, plays an important role in response to ammonium. Arabidopsis mutants with defective VTC1 have stunted growth when grown in tissue culture in the presence of ammonium. We demonstrate here that the response of VTC1 to ammonium is pH-dependent and is not a result of ascorbic acid deficiency and is largely independent of the defects in protein N-glycosylation. We speculate that VTC1 activity is regulated in a pH-dependent manner and discuss our findings in the context of recent reports showing that GDP-mannose pyrophosphorylase forms oligomers necessary for optimal enzyme activity.;Currently, the Mendelian inheritance of genetic information is regarded as a core tenet in our understanding of how genetic information is passed from one generation to the next. However, recent experiments have shown that plants are able to produce progeny that are genetically unique from their parents. The genotypes of these progeny are not predictable given the laws of Mendelian inheritance and a decisive explanation as to how they arise is still not known. Often, these genetically unique progeny are disregarded as experimental errors or contaminants. However, we have isolated a novel Arabidopsis mutant, svt2, which is capable of producing genetically distinct progeny from self-pollinated plants at a persistent relatively high rate (~10% of progeny exhibit a genotype different from the parent). The svt2 mutant was isolated in a suppressor screen of the vtc1-1 mutant, which aimed to identify genes important for the ammonium sensitivity exhibited by vtc1-1. Further characterization of the isolated M0 plant…
Advisors/Committee Members: Carina Barth.
Subjects/Keywords: Botany
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APA (6th Edition):
Kempinski, C. F. (2011). Understanding the role of ascorbic acid and GDP-mannose pyrophosphorylase affecting ammonium sensitivity, genome stability and flowering time in Arabidopsis thaliana. (Thesis). West Virginia University. Retrieved from https://doi.org/10.33915/etd.4740 ; https://researchrepository.wvu.edu/etd/4740
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kempinski, Chase F. “Understanding the role of ascorbic acid and GDP-mannose pyrophosphorylase affecting ammonium sensitivity, genome stability and flowering time in Arabidopsis thaliana.” 2011. Thesis, West Virginia University. Accessed March 02, 2021.
https://doi.org/10.33915/etd.4740 ; https://researchrepository.wvu.edu/etd/4740.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kempinski, Chase F. “Understanding the role of ascorbic acid and GDP-mannose pyrophosphorylase affecting ammonium sensitivity, genome stability and flowering time in Arabidopsis thaliana.” 2011. Web. 02 Mar 2021.
Vancouver:
Kempinski CF. Understanding the role of ascorbic acid and GDP-mannose pyrophosphorylase affecting ammonium sensitivity, genome stability and flowering time in Arabidopsis thaliana. [Internet] [Thesis]. West Virginia University; 2011. [cited 2021 Mar 02].
Available from: https://doi.org/10.33915/etd.4740 ; https://researchrepository.wvu.edu/etd/4740.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kempinski CF. Understanding the role of ascorbic acid and GDP-mannose pyrophosphorylase affecting ammonium sensitivity, genome stability and flowering time in Arabidopsis thaliana. [Thesis]. West Virginia University; 2011. Available from: https://doi.org/10.33915/etd.4740 ; https://researchrepository.wvu.edu/etd/4740
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
College of William and Mary
24.
Kinser, Taliesin.
Misregulation of Genomic Imprinting Drives Abnormal Seed Development in Hybrid Monkeyflowers (Mimulus).
Degree: MS, Biology, 2017, College of William and Mary
URL: https://scholarworks.wm.edu/etd/1516639867
► Genomic imprinting is the preferential expression of one allele over the other. It is an epigenetic phenomenon that occurs in the placentas of mammals and…
(more)
▼ Genomic imprinting is the preferential expression of one allele over the other. It is an epigenetic phenomenon that occurs in the placentas of mammals and the endosperm of angiosperms. Endosperm, like placentas, is a nutrient rich tissue that supports the growing embryo within the seed. All grains are predominantly composed of this tissue. It is the product of a second fertilization event, resulting in both maternal and paternal alleles. Some alleles are regulated differentially, resulting in imprinted genes. There are both paternally expressed imprinted genes (PEGs) and maternally expressed imprinted genes (MEGs) in the endosperm. In general PEGs tend to have functions that induce the proliferation of endosperm (and the placenta in mammals) and MEGs tend to regulate or limit proliferation. There are many theories on the evolution of imprinting and parent-specific functions in such diverged taxa. Interploidy hybridization systems are often used to study these parent-specific effects. Such systems occur when a diploid is crossed with a polyploid, typically a tetraploid. By switching the parentage, parent specific genome dosage can be altered: if the tetraploid is the mother, then the offspring, or endosperm, has maternal genomic excess, and if the tetraploid is the father, then the endosperm has paternal excess. Maternal excess is typically characterized by endosperm underproliferation and paternal excess is characterized by endosperm overproliferation, as predicted by MEG and PEG functions. While significant progress has been made in genomic imprinting, there is still much unknown. For example, in plants, maternal excess is predicted to be more stable for evolutionary and functional reasons, yet there are many cases where the opposite occurs. By using a system in Mimulus that is both interploidy and interspecies (M. guttatus is diploid and M. luteus is tetraploid) and where paternal excess is favored in offspring viability, we aim to uncover further clues behind the mechanisms and evolutionary drivers of genomic imprinting. Here we show that the paternal excess hybrid suffers from endosperm underproliferation, opposite of what is predicted, and the maternal excess hybrid suffers from complete endosperm and embryo failure. We show that smaller endosperm results in failed or delayed germination. Furthermore, using genomic techniques, we show that M. luteus is genomically dominant in the hybrids regardless of crossing direction, likely interfering with imprinting patterns. We identify new PEGs involved in cellular proliferation. We show an overall paternal bias in M. luteus, which is unexpected and uncommon – potentially suggesting other adaptive drivers in imprinting. We suggest that abnormalities in the hybrids may be due to this genomic dominance and potentially other genetic and developmental differences between the two species that interferes with MEG and PEG roles.
Subjects/Keywords: Botany
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APA (6th Edition):
Kinser, T. (2017). Misregulation of Genomic Imprinting Drives Abnormal Seed Development in Hybrid Monkeyflowers (Mimulus). (Masters Thesis). College of William and Mary. Retrieved from https://scholarworks.wm.edu/etd/1516639867
Chicago Manual of Style (16th Edition):
Kinser, Taliesin. “Misregulation of Genomic Imprinting Drives Abnormal Seed Development in Hybrid Monkeyflowers (Mimulus).” 2017. Masters Thesis, College of William and Mary. Accessed March 02, 2021.
https://scholarworks.wm.edu/etd/1516639867.
MLA Handbook (7th Edition):
Kinser, Taliesin. “Misregulation of Genomic Imprinting Drives Abnormal Seed Development in Hybrid Monkeyflowers (Mimulus).” 2017. Web. 02 Mar 2021.
Vancouver:
Kinser T. Misregulation of Genomic Imprinting Drives Abnormal Seed Development in Hybrid Monkeyflowers (Mimulus). [Internet] [Masters thesis]. College of William and Mary; 2017. [cited 2021 Mar 02].
Available from: https://scholarworks.wm.edu/etd/1516639867.
Council of Science Editors:
Kinser T. Misregulation of Genomic Imprinting Drives Abnormal Seed Development in Hybrid Monkeyflowers (Mimulus). [Masters Thesis]. College of William and Mary; 2017. Available from: https://scholarworks.wm.edu/etd/1516639867
University of KwaZulu-Natal
25.
Rambuda, Tendani Dennis.
Pollination and breeding systems of alien invasive plants in KwaZulu - Natal in South Africa.
Degree: MS, Botany, 2014, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/10375
► According to Baker (1955), success of plant invasions can be attributed to autogamous breeding systems and generalist pollination systems. A test of Baker's rule was…
(more)
▼ According to Baker (1955), success of plant invasions can be attributed to autogamous breeding
systems and generalist pollination systems. A test of Baker's rule was carried out on 19 invasive
alien plant species in KwaZulu-Natal, South Africa. Natural levels of fruit set in these plants was
high (median= 71.5% fruit set per plant). Breeding system experiments for 18 species showed that
17% of the species are allogamous, 72 % are autogamous and 11% are apomictic. This contrasts
markedly with a general flora of 1472 species in which 65% are allogamous, only 14% are
autogamous, and 21% are apomictic. Because the breeding systems of the alien species were largely
autogamous, pollinators make only a small contribution to the overall reproductive success. Seventy
one percent of the 14 alien species for which pollinators were obtained were pollinated by
honeybees, which are super-generalists and ubiquitous in a generalist pollination systems. However,
some species showed pre-adaptation to relatively specialized pollination systems, involving
hawkmoths, butterflies and Xylocopa bees respectively. Thus, alien plants were not visited by a wide
range of insects, but rather showed pre-adaption to one or more pre-existing guilds in the new
habitat. Pollen limitation experiments showed no evidence that reproductive success in populations
of the species is limited by pollen availability.
Advisors/Committee Members: Johnson, Steven Dene. (advisor).
Subjects/Keywords: Botany.
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APA (6th Edition):
Rambuda, T. D. (2014). Pollination and breeding systems of alien invasive plants in KwaZulu - Natal in South Africa. (Masters Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/10375
Chicago Manual of Style (16th Edition):
Rambuda, Tendani Dennis. “Pollination and breeding systems of alien invasive plants in KwaZulu - Natal in South Africa.” 2014. Masters Thesis, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/10375.
MLA Handbook (7th Edition):
Rambuda, Tendani Dennis. “Pollination and breeding systems of alien invasive plants in KwaZulu - Natal in South Africa.” 2014. Web. 02 Mar 2021.
Vancouver:
Rambuda TD. Pollination and breeding systems of alien invasive plants in KwaZulu - Natal in South Africa. [Internet] [Masters thesis]. University of KwaZulu-Natal; 2014. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/10375.
Council of Science Editors:
Rambuda TD. Pollination and breeding systems of alien invasive plants in KwaZulu - Natal in South Africa. [Masters Thesis]. University of KwaZulu-Natal; 2014. Available from: http://hdl.handle.net/10413/10375
University of KwaZulu-Natal
26.
Steenhuisen, Sandy-Lynn.
Mating systems, insect pollination and chemical ecology of grassland Protea species (Proteaceae).
Degree: PhD, Botany, 2012, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/8450
► Major transitions between vertebrate and insect pollination systems have occurred many times during the angiosperm radiation and are associated with evolutionary modifications in floral traits.…
(more)
▼ Major transitions between vertebrate and insect pollination systems have occurred many times
during the angiosperm radiation and are associated with evolutionary modifications in floral
traits. In the large ancestrally bird-pollinated African genus Protea (Proteaceae), an
evolutionary shift from bird to insect pollination in the genus is suggested by the fruity
diurnal scent of flowers in a recently evolved clade of grassland species. In this study, I
confirm that four of these grassland Protea species have mixed mating systems and are indeed
insect pollinated, and furthermore demonstrate the functional significance of their floral
presentation and scent chemistry for attraction of pollinators, specifically cetoniine beetles.
The study species, Protea caffra, Protea dracomontana, Protea simplex and Protea
welwitschii, have colourful bowl-shaped inflorescences that produce copious amounts of
pollen and dilute, xylose-rich nectar. Cetoniine beetles were found to be the most suitable
pollinators due to their abundance, size, relatively pure Protea pollen loads, and their
preference for the fruity scent and low growth form of these scented Protea species, as
demonstrated by choice experiments in which inflorescences were offered at either end of a y-maze
or at various heights above the ground, respectively.
Bagging and hand pollinations revealed that these Protea species are self-compatible
and capable of autonomous selfing. Self progeny of P. caffra were as vigorous as cross
progeny in terms of germinability and survivorship to two months. Vertebrate-excluded and
open-pollinated inflorescences yielded similar seed numbers for all species. Supplemental
hand-pollinations, however, failed to increase seed set substantially, an indication of resource
limitation. Outcrossing rates estimated using polymorphisms at eight allozyme loci in progeny
from vertebrate-excluded and open-pollinated treatments of P. caffra were no different
(t=0.59), indicating outcrossing by insects and an equal or insubstantial contribution from bird
pollinators.
The fruity-sweet scents of these species were more complex, with higher whole flower
and mass-specific emission rates, than those in eight bird-pollinated congenerics. The overall
floral scent is shown to be a blend of emissions from various plant parts, especially nectar.
Electroantennography (EAG) revealed that the generalist pollinator Atrichelaphinis tigrina
responds to a variety of volatile compounds found in fruity Protea scents. Field trapping
confirmed that this cetoniine beetle is strongly attracted to ß-linalool (up to 60% of scent
profile) and methyl benzoate.
In conclusion, this study demonstrates the evolution of beetle pollination and mixed
mating systems in a grassland clade of Protea. Volatile compounds that make up the unique
(within Protea) fruity scent of the study species are shown to attract beetles, and the emission
of large amounts of these compounds was probably a key step in the transition from bird to
insect pollination in Protea.
Advisors/Committee Members: Johnson, Steven Dene. (advisor).
Subjects/Keywords: Botany.
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Manager
APA (6th Edition):
Steenhuisen, S. (2012). Mating systems, insect pollination and chemical ecology of grassland Protea species (Proteaceae). (Doctoral Dissertation). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/8450
Chicago Manual of Style (16th Edition):
Steenhuisen, Sandy-Lynn. “Mating systems, insect pollination and chemical ecology of grassland Protea species (Proteaceae).” 2012. Doctoral Dissertation, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/8450.
MLA Handbook (7th Edition):
Steenhuisen, Sandy-Lynn. “Mating systems, insect pollination and chemical ecology of grassland Protea species (Proteaceae).” 2012. Web. 02 Mar 2021.
Vancouver:
Steenhuisen S. Mating systems, insect pollination and chemical ecology of grassland Protea species (Proteaceae). [Internet] [Doctoral dissertation]. University of KwaZulu-Natal; 2012. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/8450.
Council of Science Editors:
Steenhuisen S. Mating systems, insect pollination and chemical ecology of grassland Protea species (Proteaceae). [Doctoral Dissertation]. University of KwaZulu-Natal; 2012. Available from: http://hdl.handle.net/10413/8450
University of KwaZulu-Natal
27.
Aremu, Adeyemi Oladapo.
The role of meta-topolins on the physiology of micropropagated 'Williams' bananas (Musa spp. AAA).
Degree: PhD, Botany, 2012, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/8660
► Banana production ranks fifth behind cereals as a food crop and has potential, along with other major crops, to feed the world's increasing population. Globally,…
(more)
▼ Banana production ranks fifth behind cereals as a food crop and has potential, along with other major crops, to feed the world's increasing population. Globally, continuous efforts and techniques including the use of plant tissue culture (PTC) have been devised for increasing the production of several Musa species. The choice of cytokinin (CK) is one of the most critical factors in developing a successful PTC protocol. Since the discovery of topolins as naturally occurring aromatic CKs, they have emerged as genuine alternatives to the long serving CKs (benzyladenine = BA, zeatin = Z and kinetin = KIN) in PTC. Globally, the past 15 years has witnessed a surge in the use of topolins and their derivatives in research laboratories. Topolins have demonstrated great potential during culture initiation and protocol optimization as well as for counteracting various in vitro induced physiological disorders in some species. In terms of general physiology (growth, phytochemical and photosynthetic pigment contents as well as genetic fidelity), the topolins were compared with BA using 'Williams' bananas with minimal residual exogenous CK carry-over effects. The five topolins tested were meta-Topolin (mT); meta-Topolin riboside (mTR); meta-Methoxy topolin (MemT); meta-Methoxy topolin riboside (MemTR) and meta-Methoxy topolin 9-tetrahydropyran-2-yl (MemTTHP). Based on evidence of potential CK- and auxin-like activity of smoke-water (SW) and karrikinolide (KAR1) at low concentrations, a similar comparative study involving both compounds and mT was performed. For a further understanding of banana physiology in vitro, the effect of supplementing either mT- or BA-requiring cultures with roscovitine (a cyclin-dependent kinase and N-glucosylation inhibitor) and INCYDE (an inhibitor of CK degradation) on the endogenous CK profiles was investigated. In addition, greenhouse experiments geared towards improving the acclimatization competence of tissue-cultured banana plantlets via application of different concentrations of SW and vermicompost leachate was conducted.
Sterile shoot-tip explants were cultured on modified Murashige and Skoog (MS) media supplemented with 10, 20 or 30 μM of the tested CKs for 42 days while rooting experiments involved the use of classic auxins as well as SW and KAR1. Apart from 10
μM BA and 30 μM MemTTHP treatments, the number of shoots produced with all the CK treatments were significantly higher than the control. Treatment with 30 μM mT resulted in the highest number of shoots (7.3±1.0) which is an indication of the requirement of exogenous CK for increased shoot proliferation in 'Williams' bananas The use of 10 μM MemTTHP had the least root inhibitory effect during the shoot proliferation phase. As an indication of the toxicity of applied CK, MemT- and MemTR-regenerants were the most deformed while mTR-regenerated plantlets demonstrated the best quality across all the CKs tested. In mT- and BA-derived shoots, SW and KAR1 significantly increased the number and length of roots compared to the control. During…
Advisors/Committee Members: Van Staden, Johannes. (advisor), Finnie, Jeffrey Franklin. (advisor), Bairu, Michael Wolday. (advisor).
Subjects/Keywords: Botany.
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APA (6th Edition):
Aremu, A. O. (2012). The role of meta-topolins on the physiology of micropropagated 'Williams' bananas (Musa spp. AAA). (Doctoral Dissertation). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/8660
Chicago Manual of Style (16th Edition):
Aremu, Adeyemi Oladapo. “The role of meta-topolins on the physiology of micropropagated 'Williams' bananas (Musa spp. AAA).” 2012. Doctoral Dissertation, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/8660.
MLA Handbook (7th Edition):
Aremu, Adeyemi Oladapo. “The role of meta-topolins on the physiology of micropropagated 'Williams' bananas (Musa spp. AAA).” 2012. Web. 02 Mar 2021.
Vancouver:
Aremu AO. The role of meta-topolins on the physiology of micropropagated 'Williams' bananas (Musa spp. AAA). [Internet] [Doctoral dissertation]. University of KwaZulu-Natal; 2012. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/8660.
Council of Science Editors:
Aremu AO. The role of meta-topolins on the physiology of micropropagated 'Williams' bananas (Musa spp. AAA). [Doctoral Dissertation]. University of KwaZulu-Natal; 2012. Available from: http://hdl.handle.net/10413/8660
University of KwaZulu-Natal
28.
Mulaudzi, Rofhiwa Bridget.
Pharmacological evaluation of medicinal plants used by Venda people against venereal and related diseases.
Degree: PhD, Botany, 2012, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/8663
► Venereal diseases (VDs) are infections that are mainly transmitted through sexual intercourse and amongst these are gonorrhoea, syphilis, chlamydia and trichomoniasis. Gonorrhoea is the most…
(more)
▼ Venereal diseases (VDs) are infections that are mainly transmitted through sexual intercourse and amongst these are gonorrhoea, syphilis, chlamydia and trichomoniasis. Gonorrhoea is the most commonly known VD and the widest spread contagious infection in the world. Out of 448 million cases of curable venereal infections, gonorrhoea represents 88 million cases and the rest are syphilis, chlamydia and trichomoniasis. Gonorrhoea has recently been rated as in the emergent multidrug resistance phase.
Venereal diseases are amongst the major diseases ravaging many rural communities. People infected with these diseases are considered a disgrace in the community. Indigenous populations, for example the Vha-Venda people tend to use medicinal plants to treat these infectious diseases rather than using western medicines. Vha-Venda people have depended on medicinal plants for their health and survival for millenia. In order to validate and give scientific credence to the use of medicinal plants by the Vha-Venda people for venereal diseases, several pharmacological assays were carried out.
The study was aimed at evaluating the; antimicrobial, anti-inflammatory activities, HIV-type 1 reverse transcriptase (RT) inhibition properties and to determine phenolic contents as well as evaluating the mutagenic properties of, 12 medicinal plants used by the Vha-Venda people against venereal and related diseases. An attempt was also made toward isolating and identification of the most active compounds from some extracts that were active against Neisseria gonorrhoeae.
Twelve medicinal plants and various plant parts, Adansonia digitata (bark), Acacia karroo (bark), Aloe chabaudii (roots), Bolusanthus speciosus (leaves, bark and stem), Ekebergia capensis (leaves and bark), Elephantorrhiza burkei (roots), Grewia occidentalis (roots), Osyris lanceolata (roots), Pappea capensis (leaves), Peltophorum africanum (bark), Pterocarpus angolensis (leaves and bark) and Ximenia caffra (leaves and roots) were evaluated for their antimicrobial properties against two Gram-positive (Bacillus subtilis and Staphylococcus aureus), three Gram-negative (Neisseria gonorrhoeae, Escherichia coli and Klebsiella pneumonia) bacteria and the fungus Candida albicans. The plant materials were extracted with petroleum ether (PE), dichloromethane (DCM), 80% ethanol (EtOH) and water. Methanol was used for extracting materials for phenolic contents and HIV-1RT assays. The Disc diffusion method was used to determine gonococcal percentage inhibition and a microdilution assay was used to determine minimum inhibition concentration (MIC) and minimum fungicidal concentrations (MFC).
Bolusanthus speciosus and X. caffra extracts exhibited the best antigonococcal, antifungal and antibacterial activities whilst A. digitata and A. chabaudii showed poor activities. The medicinal plants were also evaluated for cyclooxygenase (COX-1 and -2) and HIV-1 reverse transcriptase inhibition activity. The DCM and PE extracts of A. digitata bark, B. speciosus bark, P. angolensis bark and P.…
Advisors/Committee Members: Van Staden, Johannes. (advisor), Finnie, Jeffrey Franklin. (advisor), Kulkarni, Manoj G. (advisor).
Subjects/Keywords: Botany.
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APA ·
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APA (6th Edition):
Mulaudzi, R. B. (2012). Pharmacological evaluation of medicinal plants used by Venda people against venereal and related diseases. (Doctoral Dissertation). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/8663
Chicago Manual of Style (16th Edition):
Mulaudzi, Rofhiwa Bridget. “Pharmacological evaluation of medicinal plants used by Venda people against venereal and related diseases.” 2012. Doctoral Dissertation, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/8663.
MLA Handbook (7th Edition):
Mulaudzi, Rofhiwa Bridget. “Pharmacological evaluation of medicinal plants used by Venda people against venereal and related diseases.” 2012. Web. 02 Mar 2021.
Vancouver:
Mulaudzi RB. Pharmacological evaluation of medicinal plants used by Venda people against venereal and related diseases. [Internet] [Doctoral dissertation]. University of KwaZulu-Natal; 2012. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/8663.
Council of Science Editors:
Mulaudzi RB. Pharmacological evaluation of medicinal plants used by Venda people against venereal and related diseases. [Doctoral Dissertation]. University of KwaZulu-Natal; 2012. Available from: http://hdl.handle.net/10413/8663
University of KwaZulu-Natal
29.
Chinsamy, Mayashree.
South African medicinal orchids : a pharmacological and phytochemical evaluation.
Degree: PhD, Botany, 2012, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/8689
► The Orchidaceae makes up the largest and most diverse family of flowering plants. Orchids are popular, often expensive ornamentals, with a broad range of ethnobotanical…
(more)
▼ The Orchidaceae makes up the largest and most diverse family of flowering plants. Orchids are popular, often expensive ornamentals, with a broad range of ethnobotanical applications. There is very limited documented information on South African medicinal orchid species; no formal pharmacopoeia outlining ethnobotanical uses; and ethnobotanical and distribution records are either scarce or inconsistent and plant populations are becoming gradually smaller. There have been significant developments in medicinal orchid research worldwide with medicinal use and corresponding pharmacological and phytochemical properties being extensively investigated. It is evident from the literature that there is no pharmacological research on South African medicinal orchids; hence the need to explore biological activity and chemical composition of South African medicinal orchid species. The ethnobotanical approach used to select the orchid species for pharmacological and phytochemical research elsewhere, yielded valuable biological compounds. Thus, a similar approach was applied to South African medicinal orchids.
There are approximately 20 000 species and 796 genera of orchids distributed across the world. In southern Africa, orchids are widely represented with 55 genera and 494 species. Approximately 75% are endemic to this region. As part of the current investigation a review of available ethnobotanical literature on South African medicinal orchids was prepared. The review revealed that an estimated 49 indigenous orchid species from 20 orchid genera are currently being informally traded and used in South African traditional medicine. They are used primarily for medicinal and cultural purposes, especially by the Zulu community in South Africa. Medicinal uses of orchid species include: treatment of inflammatory, intestinal, neurological and reproductive disorders and emetics are used to cause emesis. Non-medicinal uses of orchid species include: love, fertility, protective and lethal charms. Based on their ethnobotanical uses and endemism, South African orchids were considered to be one of the untapped sources of bioactive compounds that needed to be researched.
The current investigation addressed the broader aims of medicinal plant research by determining the efficacy, safety and chemical profile of seven indigenous orchid species used in South African traditional medicine and practices. The biological and toxic effects of orchid plant
extracts were assessed using established pharmacological bioassays. The phytochemical evaluation of the seven orchid plant extracts provided insight into the classes of chemical compounds present and their possible role in the observed biological activities. The potential of plant extracts from seven orchid species used in South African traditional medicine, as sources of natural bioactive products, are discussed. The current investigation determined the biological activity and chemical profile of seven orchid species commonly traded in KwaZulu-Natal herbal markets: Ansellia africana Lindl.,…
Advisors/Committee Members: Van Staden, Johannes. (advisor), Finnie, Jeffrey Franklin. (advisor).
Subjects/Keywords: Botany.
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APA ·
Chicago ·
MLA ·
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CSE |
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APA (6th Edition):
Chinsamy, M. (2012). South African medicinal orchids : a pharmacological and phytochemical evaluation. (Doctoral Dissertation). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/8689
Chicago Manual of Style (16th Edition):
Chinsamy, Mayashree. “South African medicinal orchids : a pharmacological and phytochemical evaluation.” 2012. Doctoral Dissertation, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/8689.
MLA Handbook (7th Edition):
Chinsamy, Mayashree. “South African medicinal orchids : a pharmacological and phytochemical evaluation.” 2012. Web. 02 Mar 2021.
Vancouver:
Chinsamy M. South African medicinal orchids : a pharmacological and phytochemical evaluation. [Internet] [Doctoral dissertation]. University of KwaZulu-Natal; 2012. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/8689.
Council of Science Editors:
Chinsamy M. South African medicinal orchids : a pharmacological and phytochemical evaluation. [Doctoral Dissertation]. University of KwaZulu-Natal; 2012. Available from: http://hdl.handle.net/10413/8689
University of KwaZulu-Natal
30.
Fajinmi, Olufunke Omowumi.
Propagation of Coleonema album (Thunb.) Bartl. & J. C. Wendl. : a horticultural and medicinal plant.
Degree: MS, Botany, 2013, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/9907
► Coleonema album is a South African green treasure, endemic to the Cape region and hard to find in other parts of the country. It is…
(more)
▼ Coleonema album is a South African green treasure, endemic to the Cape region and hard to find in other parts of the country. It is ranked among the most highly utilized medicinal plants at present. The plant extracts exhibit a wide range of pharmacological activities due to its bioactive compounds. Immunat, a tincture from this plant is marketed commercially. Medicinal plant gatherers are on the lookout for this plant due to its high demand and market price. Several natural product companies in South Africa are now exporting Coleonema album oil. Its showy beautiful white flowers make it a valuable ornamental plant. There is no accredited germination protocol available for this medicinal and ornamental plant till date.
In this study, the chemical and environmental conditions required for optimum seed germination and seedling growth were studied. The effect of light, temperature shifts, cold and warm stratifications, smoke-water, butenolide, pH levels, plant growth regulators (kinetin, 6-benzyladenine, indole acetic acid and α-Naphthalene acetic acid), salt solutions (sodium chloride and ammonium nitrate) on seed germination were investigated. Seeds showed favourable response of germination at low temperatures (10 and 15 ºC). Seeds exposed to continuous darkness at low temperatures showed highest germination at 15 ºC. Temperature shift (from 20 ºC to 15 ºC) favoured seed germination. pH 6 is the most conducive pH level for Coleonema album seed germination (52.5%). Sodium chloride and ammonium nitrate solutions (pretreatment for 2 weeks) significantly improved germination at a 10-2 M concentration with 62.5 and 75% germination respectively. Coleonema album seeds exhibit a temperature-dependent physiological dormancy. Seed germination of this plant is quite erratic as seed germination started 21 days after incubation and lasted for over 90 days. Germination rate of the seeds is too slow to meet the local and international demand for this plant.
Plant tissue culture techniques have been used as an alternative for mass cultivation of plants that are difficult to propagate from seeds. Therefore, an effective micropropagation protocol was developed as a measure to conserve this highly utilized medicinal plant. The effects of the cytokinins: BA, kinetin, TDZ and topolins on in vitro shoot formation of Coleonema album were investigated. Of all the cytokinins tested, 5 μM mT gave the highest number of shoots (14.50) per explant. Combination of 5 μM mT with various concentrations of IBA and NAA significantly increased shoot production. Shoots cultured on IBA supplemented medium produced roots. Root production from NAA cultures is unfavourable as most of the shoots developed callus at the base of the stem.
The result of this study has shown that mT has potential as a highly active alternative to BA and other cytokinins for Coleonema album in vitro shoot production. Over 1,000,000 plantlets could be produced annually using the in vitro propagation protocol developed in this study. The results of this study will be useful as a…
Advisors/Committee Members: Van Staden, Johannes. (advisor), Finnie, Jeffrey Franklin. (advisor).
Subjects/Keywords: Botany.
Record Details
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Record Details
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
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Manager
APA (6th Edition):
Fajinmi, O. O. (2013). Propagation of Coleonema album (Thunb.) Bartl. & J. C. Wendl. : a horticultural and medicinal plant. (Masters Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/9907
Chicago Manual of Style (16th Edition):
Fajinmi, Olufunke Omowumi. “Propagation of Coleonema album (Thunb.) Bartl. & J. C. Wendl. : a horticultural and medicinal plant.” 2013. Masters Thesis, University of KwaZulu-Natal. Accessed March 02, 2021.
http://hdl.handle.net/10413/9907.
MLA Handbook (7th Edition):
Fajinmi, Olufunke Omowumi. “Propagation of Coleonema album (Thunb.) Bartl. & J. C. Wendl. : a horticultural and medicinal plant.” 2013. Web. 02 Mar 2021.
Vancouver:
Fajinmi OO. Propagation of Coleonema album (Thunb.) Bartl. & J. C. Wendl. : a horticultural and medicinal plant. [Internet] [Masters thesis]. University of KwaZulu-Natal; 2013. [cited 2021 Mar 02].
Available from: http://hdl.handle.net/10413/9907.
Council of Science Editors:
Fajinmi OO. Propagation of Coleonema album (Thunb.) Bartl. & J. C. Wendl. : a horticultural and medicinal plant. [Masters Thesis]. University of KwaZulu-Natal; 2013. Available from: http://hdl.handle.net/10413/9907
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