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Oregon State University
1.
Liu, Jiang.
Identifying the Parameters for Wheat Pollen Electroporation Transformation.
Degree: MS, Crop Science, 2016, Oregon State University
URL: http://hdl.handle.net/1957/59404 
► Wheat (Triticum aestivum L.) is one of the most important crops in the world. It has been and continues to be one of the main…
(more)
▼ Wheat (Triticum aestivum L.) is one of the most important crops in the world. It has been and continues to be one of the main sources of food for humans and animals. Although traditional
wheat breeding has contributed greatly to the improvement of
wheat both in productivity and biotic/abiotic stress tolerance/resistance,
wheat breeding is restricted by the time it takes to produce new cultivars and species barriers that limit the sources of genes for
wheat improvement. Genetic transformation, which allows for the rapid introduction of new genes without species barriers, has been used as a tool for crop improvement in many crops over the past twenty-five years.
Wheat is one of the few major crops that has not benefited from genetic transformation. Biolistic- and Agrobacterium- mediated transformation are currently the two primary methods used for
wheat genetic transformation though both have disadvantages related to genotype dependence on ability to produce plantlets in tissue culture and the involvement of selectable marker genes. Pollen electroporation transformation is a potential method that can overcome these disadvantages since there is no tissue culture requirement and no need for selectable markers to allow for growth and selection of transgenic plantlets. Therefore, the object of this research was to optimize the conditions needed for
wheat pollen electroporation to utilize pollen electroporation as a method to produce transgenic
wheat.
To achieve this object experiments were conducted to determine the parameters for successful pollen electroporation. The first was to determine the optimum field strength for electroporation that allowed for the movement of macromolecules and DNA into the pollen grains while maintaining pollen viability. Based on the results of the Trypan blue test to determine movement of macromolecules into the pollen grain and the MTT (3-[4,5-Dimethyltiazo-2-yl]-2,5- diphenyltetrazolium bromide) test to determine pollen viability, the optimal field strength of
wheat pollen electroporation transformation was 7.5 kV/cm. There was no interaction effect of pollen source and field strength indicating that the optimal field strength needed for transformation was independent of the genotype of the pollen source. The second experiment was to confirm that DNA would be taken up by the pollen grain after electroporation. Based on the results of the DNA uptake test, pollen could take up DNA from the surrounding liquid environment with and without an electric shock but uptake of DNA with an electric shock was greater. This demonstrated that electroporated pollen could act as a vector to transfer DNA into an egg cell and seed if fertilization occurs. To determine if transient expression of the gfp gene could be used in
wheat to demonstrate successful introduction of foreign DNA into
wheat via pollen electroporation, a plasmid carrying the gfp gene was shot into immature
wheat embryo tissue using particle bombardment. Expression of the gfp gene was observed indicating that the plasmid DNA with the gfp…
Advisors/Committee Members: Zemetra, Robert (advisor), Leonard, Jeff (committee member).
Subjects/Keywords: wheat; Wheat – Pollen
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APA (6th Edition):
Liu, J. (2016). Identifying the Parameters for Wheat Pollen Electroporation Transformation. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/59404
Chicago Manual of Style (16th Edition):
Liu, Jiang. “Identifying the Parameters for Wheat Pollen Electroporation Transformation.” 2016. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/59404.
MLA Handbook (7th Edition):
Liu, Jiang. “Identifying the Parameters for Wheat Pollen Electroporation Transformation.” 2016. Web. 21 Apr 2021.
Vancouver:
Liu J. Identifying the Parameters for Wheat Pollen Electroporation Transformation. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/59404.
Council of Science Editors:
Liu J. Identifying the Parameters for Wheat Pollen Electroporation Transformation. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59404
2.
Chishimba, Katongo.
Response of wheat (Triticum Aestivum)to Vesicular Arbuscular Mycorrhiza(VAM) and Trichoderma on grain yield and uptake of phosphorous in Acidic Soils.
Degree: 2013, University of Zimbabwe
URL: http://dspace.unza.zm/handle/123456789/3045
► Wheat is an important economic cereal crop used in the production of a wide range of foods and other products. However, due to low wheat…
(more)
▼ Wheat is an important economic cereal crop used in the production of a wide range of foods and other products. However, due to low wheat production (< 1.5 ton/ha) in acidic soils, and the country’s total demand of about 240,000 metric tones as at 2010, is unable to be met. Acid soils generally cover a large part of the Zambian soils and have problems of low soil fertility including aluminium toxicity, low pH and phosphate. This condition is detrimental to growth of wheat. Therefore, this study is important in that it may provide a cost effective remedy for growing wheat in high rainfall regions and contribute to the total country’s wheat production. The research study was carried out to determine the effect of fungal treatments on selected wheat varieties with regard to uptake of phosphorous and grain yield in acidic soils. The study was conducted in Chipata District at Msekera Research Station of the Zambian Agriculture Research Institute between May and September 2010. The station is located at Latitude 13o 39’N and Longitude 32o 34’E. A Factorial Randomized Complete Block Design with three replications was used. The factors considered were lime at two levels (with and without lime), Variety at four levels (Sahai, Nduna, Lorrie II and UnzaWV1) and fungal treatment at four levels (Trichoderma, Versicular arbuscular mycorrhiza (VAM), VAM/Trichoderma and control). First phase of the experiment was isolation of VAM spores from the soil and the second phase was inoculation of wheat seeds with VAM and Trichoderma species at planting. Indigenous spores of VAM were extracted by the wet sieving and decanting technique of Gerdemann and Nicolson. The results of the study showed that VAM and Trichoderma spp significantly increased phosphorous uptake and grain yield for all wheat varieties when applied seperately. The grain yield and P uptake for all four wheat varieties was still high irrespective of the liming when wheat varieties were treated with VAM and Trichoderma species. This is due to ability by Trichoderma spp and VAM to survive and increase nutrient uptake in acidic soils. Fungal treatment increased grain yield and P uptake by 200% and 400% respectively.
Subjects/Keywords: Wheat; Wheat Varieties
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APA (6th Edition):
Chishimba, K. (2013). Response of wheat (Triticum Aestivum)to Vesicular Arbuscular Mycorrhiza(VAM) and Trichoderma on grain yield and uptake of phosphorous in Acidic Soils. (Thesis). University of Zimbabwe. Retrieved from http://dspace.unza.zm/handle/123456789/3045
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):
Chishimba, Katongo. “Response of wheat (Triticum Aestivum)to Vesicular Arbuscular Mycorrhiza(VAM) and Trichoderma on grain yield and uptake of phosphorous in Acidic Soils.” 2013. Thesis, University of Zimbabwe. Accessed April 21, 2021.
http://dspace.unza.zm/handle/123456789/3045.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chishimba, Katongo. “Response of wheat (Triticum Aestivum)to Vesicular Arbuscular Mycorrhiza(VAM) and Trichoderma on grain yield and uptake of phosphorous in Acidic Soils.” 2013. Web. 21 Apr 2021.
Vancouver:
Chishimba K. Response of wheat (Triticum Aestivum)to Vesicular Arbuscular Mycorrhiza(VAM) and Trichoderma on grain yield and uptake of phosphorous in Acidic Soils. [Internet] [Thesis]. University of Zimbabwe; 2013. [cited 2021 Apr 21].
Available from: http://dspace.unza.zm/handle/123456789/3045.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chishimba K. Response of wheat (Triticum Aestivum)to Vesicular Arbuscular Mycorrhiza(VAM) and Trichoderma on grain yield and uptake of phosphorous in Acidic Soils. [Thesis]. University of Zimbabwe; 2013. Available from: http://dspace.unza.zm/handle/123456789/3045
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
3.
Mantovani, Eder Eduardo.
Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm.
Degree: 2011, North Dakota State University
URL: http://hdl.handle.net/10365/29911
► Wheat improvement most often has been accompanied by a narrowing germplasm base, as newer cultivars have been derived from intercrosses between elite germplasm. However, there…
(more)
▼ Wheat improvement most often has been accompanied by a narrowing germplasm base, as newer cultivars have been derived from intercrosses between elite germplasm. However, there is a concern that narrow germplasm may restrict breeding improvement for important traits such as resistances to new biotic and abiotic stresses. In addition to germplasm base, the wheat kernel is a major component of wheat grain yield and an important factor for milling characteristics. Focusing on wheat kernel characteristics might be a key element to improve wheat genotypes for agronomic and quality traits. With the intention to broaden the wheat germplasm, and to explore the associations between kernel traits and agronomic as well as quality traits, a two-year study was initiated in 2009 to examine the influence of the kernel traits on the agronomic and quality attributes of a 160 Recombinant Inbred Lines (RIL) population developed from an adapted (ND 705) and a non-adapted genotype (PI 414566). The experiment was conducted at Prosper and Carrington, North Dakota, during 2009 and 2010. The RIL population had a better performance at Carrington than Prosper due to favorable climatic conditions at this location, in 2009 and 2010. The results in this study showed that kernel traits had a high correlation among them and they exhibited continuous variations suggesting a polygenic inheritance. Grain yield, kernel volume weight (KVW), and flour extraction were highly correlated with kernel width, length/width ratio, weight, and area. Eight RIL yielded better than the adapted parent ND 705 and two of the RIL along with three checks were significantly superior for gram yield compared with the other genotypes across all environments. Although the non-adapted parent has a facultative grown habit, several RIL required fewer days to flower compared to the adapted parent. Two RIL had better flour extraction compared to the other genotypes included in this study. These results indicated that kernel traits can play a significant role in improving agronomic and quality traits. Higher values for grain yield, KVW, and flour extraction were significantly associated with
spheroid or round shape (short and plump), large, and heavy kernels. The high agronomic and quality attributes showed by some RIL demonstrated that the use of a non-adapted parent can broaden the genetic variability while increasing the genetic gain for certain traits. Also, breeders should pay attention to kernel size and shape during the parental selection for the development of populations with improved agronomic and quality traits.
Subjects/Keywords: Wheat – Genetics.; Wheat – Composition.; Wheat – Yields.
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APA (6th Edition):
Mantovani, E. E. (2011). Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm. (Thesis). North Dakota State University. Retrieved from http://hdl.handle.net/10365/29911
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):
Mantovani, Eder Eduardo. “Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm.” 2011. Thesis, North Dakota State University. Accessed April 21, 2021.
http://hdl.handle.net/10365/29911.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mantovani, Eder Eduardo. “Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm.” 2011. Web. 21 Apr 2021.
Vancouver:
Mantovani EE. Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm. [Internet] [Thesis]. North Dakota State University; 2011. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/10365/29911.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mantovani EE. Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm. [Thesis]. North Dakota State University; 2011. Available from: http://hdl.handle.net/10365/29911
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
4.
Fajardo Centeno, Carlos A.
Influence of Soft Wheat Characteristics on Quality of Batter-based Products.
Degree: PhD, Food Science & Technology, 2016, Oregon State University
URL: http://hdl.handle.net/1957/58774
► Wheat is a globally traded staple crop. Wheat is important in human diets because of its agronomic adaptability, physical characteristics, functionality for the production of…
(more)
▼ Wheat is a globally traded staple crop.
Wheat is important in human diets because of its agronomic adaptability, physical characteristics, functionality for the production of leavened products and nutritional value. Two significant characteristics make
wheat an important staple food-crop. First, the proteins present in
wheat endosperm have attributes that enable gas retention after the proteins are hydrated and mechanically worked during dough production. Second, a wider variety of products can be made out of
wheat compared to other cereals.
Wheat quality is defined in terms of suitability for specific end-uses. This is important for breeders, farmers, flour millers, and food producers and consumers. In the U.S. Pacific Northwest (PNW) climatic conditions favor production of soft
wheat. Three soft
wheat types are planted in the PNW, soft white winter (SWW), soft white spring (SWS), and club (CLUB). Batter-based products are important applications for soft wheats and include a wide range of products such as pancakes and waffles, cakes, and coatings. Pancakes are produced from fluid batters using a single step mixing process and contain sugar concentrations < 30% in their formulations. Cakes are complex food systems where their
classification is based on mixing process to produce the batters and the sugar-flour ratio concentrations in their formulations.
This dissertation is focused on the functionality, analysis, and selection of soft
wheat quality traits that affect end-product performance and also developing a methodology to rapidly predict cake quality.
The first study (Chapter 3) was concerned with the functionality of SWW wheats in pancake making. The aim of this study was to observe the differences in genotype and protein concentration on batter flow and pancake making performance of a collection of SWW wheats. Two formulations were used in the study: one based on Finnie et al (2006) called "old" and another based on the AACC-I Approved Method 10-80.01 called "new". The "new" lean formulation had an improved ability to distinguish the performance of different flours compared with the “old” as a result of wider range of pancake diameters. This study showed that pancake making performance would not be optimized by conventional superior high-quality soft
wheat flours with soft kernel texture, high break flour yield, and low water-, carbonate-, and sucrose SRCs. From our results it appears that for unchlorinated flours, at least for thicker pancakes, the most appropriate flour would have higher water and sucrose SRCs and be grown under management conditions conductive to higher protein.
The second study (Chapter 4) was a meta-analysis of data collected by the USDA Western
Wheat Quality Laboratory (Pullman, WA). This study was done to advance
understanding soft
wheat quality traits that differentially affect sugar-snap cookie diameter (CODI) and Japanese sponge cake (SC) volume (CAVOL). Principal component analysis (PCA) and partial least square (PLS) regression models were used to obtain useful actionable…
Advisors/Committee Members: Ross, Andrew S. (advisor), Zemetra, Robert (committee member).
Subjects/Keywords: Wheat; Soft wheat – Quality
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APA (6th Edition):
Fajardo Centeno, C. A. (2016). Influence of Soft Wheat Characteristics on Quality of Batter-based Products. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/58774
Chicago Manual of Style (16th Edition):
Fajardo Centeno, Carlos A. “Influence of Soft Wheat Characteristics on Quality of Batter-based Products.” 2016. Doctoral Dissertation, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/58774.
MLA Handbook (7th Edition):
Fajardo Centeno, Carlos A. “Influence of Soft Wheat Characteristics on Quality of Batter-based Products.” 2016. Web. 21 Apr 2021.
Vancouver:
Fajardo Centeno CA. Influence of Soft Wheat Characteristics on Quality of Batter-based Products. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/58774.
Council of Science Editors:
Fajardo Centeno CA. Influence of Soft Wheat Characteristics on Quality of Batter-based Products. [Doctoral Dissertation]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/58774
Oregon State University
5.
Sophonputtanaphoca, Supaporn.
Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing.
Degree: PhD, Food Science and Technology, 2012, Oregon State University
URL: http://hdl.handle.net/1957/29776
► The work described in this dissertation focused on chemistry related to the use of aqueous sodium hydroxide as a treatment in the processing of wheat…
(more)
▼ The work described in this dissertation focused on chemistry related to the use of aqueous sodium hydroxide as a treatment in the processing of
wheat straw. A major emphasis was the comprehensive evaluation of straw component partitioning due to sodium hydroxide (NaOH) processing. This was evaluated over a range of NaOH concentrations (0‐10%, w/v), all at 50°C, 5 h treatment period, and 3% solid loading. Solid and liquid phases resulting from NaOH treatments were evaluated. Total solids recovered in the NaOH‐treated solid phase ranged from 47.4‐88.0%. Overall carbohydrate recovery in the combined solid and liquid phases was negatively correlated with the alkali concentration of the treatment liquor. The glucan content of the NaOH‐treated solid phase ranged from 37.2‐67.4%. Glucan recovery in the solid phase was relatively high in all cases, the minimum value being ~98%. Increasing amounts of xylan partitioned into the liquid phase as sodium hydroxide concentrations increased – it ranged from 31‐83% of the xylan being recovered in the soluble phase. Carbohydrate analyses of the pretreated liquor revealed that the majority of carbohydrate loss from the solid fraction could be recovered in the liquid phase in form of oligomers and monomers due to alkaline degradation. The interconversion of glucose, fructose, and mannose under the alkaline condition played an important role in the presence of those sugars. Increase in NaOH concentration contributed to increase in amount of cellulose‐derived and hemicellulose‐derived oligomers in the pretreated liquor. All oligomers except fructooligomers in NaOH pretreated liquor were higher than those found in water extraction at 50°C, 5 h. Total carbohydrate recovery from the solid and liquid fractions was as high as 99% for glucose and glucan in 5% NaOH treatment and 80‐95% for xylose and xylan in 1-10% NaOH treatment. The presence of NaOH as extraction reagent dramatically induced lignin and ash removal from the pretreated solid with up to 63% acid insoluble lignin (AIL) and 87% ash extraction. Solid fractions resulting from NaOH pretreatments (up to 5% NaOH) were tested for their susceptibility to enzymatic saccharification using cellulase and cellulase/xylanase enzyme preparations. The cellulase/xylanase enzyme preparation was found to be more effective at cellulose saccharification than the cellulase enzyme preparation alone. Maximum glucose yield, which corresponded to the 5% NaOH treatment, was 82% over the standard 48 h saccharification period. Extended saccharifications times to 120 h showed that the conversion yield approached 90%. Sequential treatments of the straw (i.e. initial alkali treatment – first enzyme saccharification – second alkali treatment ‐ second enzyme treatment) revealed the NaOH treatment has the potential to render essentially all (~99%) of the straw glucan susceptible to enzyme saccharification. This suggests that the layered molecular arrangement of cellulose, hemicellulose, and lignin in the cell wall impacts biomass recalcitrance and glucan…
Advisors/Committee Members: Penner, Michael H. (advisor), Kelly, Christine (committee member).
Subjects/Keywords: wheat straw; Wheat straw – Processing
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APA (6th Edition):
Sophonputtanaphoca, S. (2012). Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/29776
Chicago Manual of Style (16th Edition):
Sophonputtanaphoca, Supaporn. “Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing.” 2012. Doctoral Dissertation, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/29776.
MLA Handbook (7th Edition):
Sophonputtanaphoca, Supaporn. “Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing.” 2012. Web. 21 Apr 2021.
Vancouver:
Sophonputtanaphoca S. Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing. [Internet] [Doctoral dissertation]. Oregon State University; 2012. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/29776.
Council of Science Editors:
Sophonputtanaphoca S. Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing. [Doctoral Dissertation]. Oregon State University; 2012. Available from: http://hdl.handle.net/1957/29776
Oregon State University
6.
Gaynor, Robert C. (Robert Christopher).
Quantitative trait loci mapping of yield, its related traits, and spike morphology factors in winter wheat (Triticum aestivum L.).
Degree: MS, Crop Science, 2010, Oregon State University
URL: http://hdl.handle.net/1957/16255
► Increasing grain yield in wheat (Triticum aestivum L.) is a challenging task, because yield is a complex trait controlled by many genes and highly influenced…
(more)
▼ Increasing grain yield in
wheat (Triticum aestivum L.) is a challenging task, because yield is a complex trait controlled by many genes and highly influenced by environmental factors. The genetic control of yield components and other traits associated with yield may be less complex and thus more manageable for breeding. This study seeks to identify quantitative trait loci (QTLs) for these traits. Two new genetic linkage maps were constructed from recombinant inbred lines (RILs) derived from crosses between the Oregon soft white winter
wheat variety Tubbs and a Western European hard red winter
wheat variety, Einstein. A third linkage map was constructed from RILs from a cross with Tubbs and a Western European experimental hard red winter
wheat line. A combination of Diversity Arrays Technology (DArT), Simple Sequence Repeat (SSR), orw5, and B1 markers were used to construct genetic linkage maps. Two replications of the RIL populations were grown in yield trial sized plots at Corvallis, OR and Pendleton, OR in 2009. The RILs were evaluated for grain yield, spikes per m², fertile spikelets per spike, sterile spikelets per spike, seeds per spike, seeds per fertile spikelet, average seed weight, growing degree days (GDD) to flowering, GDD to physiological maturity, GDD of grain fill, plant height, test weight, and percent grain protein. Composite interval mapping (CIM) detected 146 QTLs for these traits spread across all chromosomes except for 6D. Thirty six percent of all of the QTLs detected were in close proximity to four loci: Rht-B1, Rht-D1, B1, and Xgwm372. The use of factor analysis to aid in QTL mapping for correlated traits related to spike morphology was explored. Quantitative trait loci mapping of factor scores for these traits potentially showed an increase in statistical power to detect QTLs and a decrease in the probability of type I error over mapping the traits individually.
Advisors/Committee Members: Peterson, C James (advisor), Xue, Lan (committee member).
Subjects/Keywords: wheat; Winter wheat – Yields
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APA (6th Edition):
Gaynor, R. C. (. C. (2010). Quantitative trait loci mapping of yield, its related traits, and spike morphology factors in winter wheat (Triticum aestivum L.). (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/16255
Chicago Manual of Style (16th Edition):
Gaynor, Robert C (Robert Christopher). “Quantitative trait loci mapping of yield, its related traits, and spike morphology factors in winter wheat (Triticum aestivum L.).” 2010. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/16255.
MLA Handbook (7th Edition):
Gaynor, Robert C (Robert Christopher). “Quantitative trait loci mapping of yield, its related traits, and spike morphology factors in winter wheat (Triticum aestivum L.).” 2010. Web. 21 Apr 2021.
Vancouver:
Gaynor RC(C. Quantitative trait loci mapping of yield, its related traits, and spike morphology factors in winter wheat (Triticum aestivum L.). [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/16255.
Council of Science Editors:
Gaynor RC(C. Quantitative trait loci mapping of yield, its related traits, and spike morphology factors in winter wheat (Triticum aestivum L.). [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/16255
7.
Mushekwa, Sakumona.
Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency.
Degree: 2012, University of Zimbabwe
URL: http://dspace.unza.zm/handle/123456789/1805
► Wheat is increasing becoming an important staple food crop in Zambia particularly in the urban and per-urban communities where shift in food tastes and preferences…
(more)
▼ Wheat is increasing becoming an important staple food crop in Zambia particularly in the urban and per-urban communities where shift in food tastes and preferences to wheat products has occurred. Production and yield are however severely limited by cost of irrigation water and nitrogen fertilisers.
A study was carried out at the National Irrigation Research Station (Nanga) in 2011 dry season to evaluate wheat genotypes for nitrogen and water use efficiency and identify wheat morphological traits that influence nitrogen and water use efficiency. The experiment was arranged in a Split-split plot in a Randomised Complete Block Design with three replications. Three water regimes (100%, 75% and 50% crop water requirement) were used as main factor, three nitrogen rates (240,160 and 80 kg ha-1) as sub-factor and twelve spring wheat genotypes as sub-sub factor. Grain yield, water use efficiency (WUE), nitrogen use efficiency (NUE), ear length, above ground biomass, plant height, thousand kernel weight, grains per ear, harvest index, spikes per ear, days to 50 % flowering and leaf rolling were assessed and analysed. Correlation and stepwise multiple regression analyses were done to study the parameter relationship.
The results revealed that there were highly significant differences among the twelve genotypes for grain yield, morphological traits, WUE and NUE. Varying water regimes significantly affected most parameters measured except thousand kernel weight, spikes per ear and ear length. The factor nitrogen also had significant effect on most of the parameters except spikes per ear, plant height, days to 50% flowering and ear length. All factor interactions were significant for the parameters measured apart from that of water by nitrogen interaction for spikes per ear which was not affected by the interaction of water regime by nitrogen rate and plant height which was non-significant. Genotypes Mampolyo and Sahai I gave the highest grain yield of 5,064 kg ha-1 and 4,979 kg ha-1 respectively, NUE of 36.88 kg/ha kg N-1 and 36.68 kg/ha kg N-1 respectively and WUE of 13.60 kg/ha mm-1 and 13.82 kg/ha mm-1 respectively. In low water supply, Sahai I and Loerie II showed the highest NUE and WUE while under limited nitrogen application rates Sahai I, Choza and Nduna recorded the highest NUE and WUE.
There were highly significant positive correlations between WUE and thousand kernel weight (r = 0.352**), harvest index (r = 0.183**) and leaf rolling (r = 0. 201**) and highly significant negative between WUE and plant height (r = - 0.175**) and days to 50% flowering (r = - 0.214**). Apart from thousand kernel weight (r = - 0.138*) and leaf rolling (r = - 0.297**) which were negative and significantly, all traits were positive and significantly correlated to NUE. The relationship between WUE and NUE (r = - 0.054) was negative and non-significant.
In low water and nitrogen application rates, plant height and harvest index were identified as the most important traits that explained variation in WUE and NUE of genotypes. These…
Subjects/Keywords: Wheat – Genetics – Zambia; Wheat
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APA (6th Edition):
Mushekwa, S. (2012). Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency. (Thesis). University of Zimbabwe. Retrieved from http://dspace.unza.zm/handle/123456789/1805
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):
Mushekwa, Sakumona. “Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency.” 2012. Thesis, University of Zimbabwe. Accessed April 21, 2021.
http://dspace.unza.zm/handle/123456789/1805.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mushekwa, Sakumona. “Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency.” 2012. Web. 21 Apr 2021.
Vancouver:
Mushekwa S. Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency. [Internet] [Thesis]. University of Zimbabwe; 2012. [cited 2021 Apr 21].
Available from: http://dspace.unza.zm/handle/123456789/1805.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mushekwa S. Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency. [Thesis]. University of Zimbabwe; 2012. Available from: http://dspace.unza.zm/handle/123456789/1805
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Zambia
8.
Nxumalo, Zanele.
Yield stability of spring wheat under varying ambient Temperature Regimes
.
Degree: 2011, University of Zambia
URL: http://hdl.handle.net/123456789/227
► The performance of ten spring wheat varieties in respect to yield and yield components was analysed in a split-split plot design with location (Chirundu, Unza…
(more)
▼ The performance of ten spring wheat varieties in respect to yield and yield components was analysed in a split-split plot design with location (Chirundu, Unza and Mpongwe representing Region I, II and III of Zambia respectively) as the main plot, planting dates (mid-April, mid-May,
mid-June and mid-July) as the sub plot and variety as the sub-subplot. Five heat tolerant lines and five local varieties were used. The planting dates represented a wide range of temperature regimes.
This was aimed at simulating the growing conditions of the crop when planting is delayed. The aim was to establish the extent of yield loss with delayed planting and also to determine which of the yield components are greatly affected with delayed planting and how strongly these yield components influence yield.
The varieties did not differ significantly in yield across location and planting dates. Locations had a significant influence on yield. Chirundu in the hot Zambezi valley gave the lowest average yield of the three locations. The locations and planting dates caused differences in number of spikelets/ear,number of tillers/square meter, thousand-kernel weight, plant height, leaf area index and harvest index and were lower at Chirundu compared to the other locations. The optimum planting date for Unza and Mpongwe was May while Chirundu it was April. Delayed planting resulted in low yields
and low expression of yield components. The effect of delayed planting was more pronounced in
Chirundu. The heat tolerant lines showed a slight edge in yield than the local varieties. The heat tolerant varieties showed superior performance in number of spikelets/ear, number of tillers/square
meter and plant height.
A stepwise multiple regression analysis identified number of spikelets/ear as the most important trait explaining variation in yield and the number of tillers/square meter and harvest index showing a marginal effect. When location and planting dates combinations were taken as environments in all locations July planting gave the most negative value of the environmental index. This indicated that this location-planting date combination was the most adverse environment for wheat production.
The stability analysis using Eberhart and Russell (1966) method, considering the regression coefficient, mean square deviation from regression and mean advantage over grand mean showed the heat tolerant lines tend to be much more stable than local varieties.
The overall indication of this study was that wheat breeders could deliberately select for heat tolerance with respect to yield stability. In this process targeting number of spikelets/ear and number of tillers/square meter may result in improved yields and stability of yield performance under even harsh temperature regimes, thus ensuring that good yields are obtained even when planting is delayed. The growing of heat tolerant varieties would encourage wheat production among both the small scale and large-scale farmers in the hot areas, which are well endowed with water resources.
Subjects/Keywords: Wheat – Varieties
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APA (6th Edition):
Nxumalo, Z. (2011). Yield stability of spring wheat under varying ambient Temperature Regimes
. (Thesis). University of Zambia. Retrieved from http://hdl.handle.net/123456789/227
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):
Nxumalo, Zanele. “Yield stability of spring wheat under varying ambient Temperature Regimes
.” 2011. Thesis, University of Zambia. Accessed April 21, 2021.
http://hdl.handle.net/123456789/227.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nxumalo, Zanele. “Yield stability of spring wheat under varying ambient Temperature Regimes
.” 2011. Web. 21 Apr 2021.
Vancouver:
Nxumalo Z. Yield stability of spring wheat under varying ambient Temperature Regimes
. [Internet] [Thesis]. University of Zambia; 2011. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/123456789/227.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nxumalo Z. Yield stability of spring wheat under varying ambient Temperature Regimes
. [Thesis]. University of Zambia; 2011. Available from: http://hdl.handle.net/123456789/227
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
9.
Güler, Mengü.
Yield and other agronomic characters of winter wheat cultivars as affected by five seeding rates and three different environmental conditions.
Degree: MS, Agronomic Crop Science, 1974, Oregon State University
URL: http://hdl.handle.net/1957/46100
► Five newly released and two Eastern European winter wheat cultivars were grown under five different seeding rates (80, 160, 240, 320, 400 seeds per m²).…
(more)
▼ Five newly released and two Eastern European winter
wheat
cultivars were grown under five different seeding rates (80, 160,
240, 320, 400 seeds per m²). Four of these newly released cultivars
were grown at three different locations which have different environmental
conditions. Data were obtained on grain yield, tiller number
per plant, 1000 kernel weight, seed number per spike, plant and
spike number per unit area, plant height, heading and maturity dates.
At the lowest rate of seeding the grain yield was significantly
lower at all three locations. Although there were no significant
differences for grain yield for all the other seeding rates, maximum
yields were obtained from lower seeding rates at Ryan while at
Hyslop and Madras, which had better moisture conditions, maximum
yields were obtained at higher seeding rates. This situation was not observed for the Yamhill cultivar in which maximum yields were
obtained at 160 seeds per m² seeding rate at all three locations.
Tillers per plant value decreased as the seeding rate increased.
Hyslop and McDermid produced significantly higher number of tillers
per plant from the other cultivars.
Significantly highest 1000 kernel weight values were obtained
at the lowest seeding rate. Yamhill produced the highest significant
1000 kernel weight while Paha produced the lowest.
Seeds per spike value followed the same order as tillers per
plant and 1000 kernel weight showing a continuous decrease with the
increased rates of seeding.
The number of plants per m² was a direct linear function of
seeding rate. The number of spikes per m² increased curvilinearly
with the increased seeding rate. Hyslop and McDermid produced the
highest significant number of spikes per m² because of their higher
tillering ability.
Plant height increased with increased rates of seeding because
of the increased competition for light. Yamhill and Paha were
significantly the tallest cultivars. The tallest plants were observed
at Hyslop.
There was a decrease in the number of days in heading and
maturity as the rates of seeding increased. The cultivars ranked in
the order Paha > Yamhill > Hyslop > McDermid for heading and maturity dates. Heading first occurred at Hyslop followed by Ryan
and Madras while maturity occurred first at Ryan followed by
Hyslop and Madras.
Highly positive correlations were observed among plants per m², spikes per m and seeding rate while these factors correlated
negatively with tillers per plant, 1000 kernel weight and seeds per
spike.
The regression equations showed that maturity date, heading
date and spikes per m² values were the most important factors for
predicting yield.
Advisors/Committee Members: Bolton, Floyd E. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Güler, M. (1974). Yield and other agronomic characters of winter wheat cultivars as affected by five seeding rates and three different environmental conditions. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/46100
Chicago Manual of Style (16th Edition):
Güler, Mengü. “Yield and other agronomic characters of winter wheat cultivars as affected by five seeding rates and three different environmental conditions.” 1974. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/46100.
MLA Handbook (7th Edition):
Güler, Mengü. “Yield and other agronomic characters of winter wheat cultivars as affected by five seeding rates and three different environmental conditions.” 1974. Web. 21 Apr 2021.
Vancouver:
Güler M. Yield and other agronomic characters of winter wheat cultivars as affected by five seeding rates and three different environmental conditions. [Internet] [Masters thesis]. Oregon State University; 1974. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/46100.
Council of Science Editors:
Güler M. Yield and other agronomic characters of winter wheat cultivars as affected by five seeding rates and three different environmental conditions. [Masters Thesis]. Oregon State University; 1974. Available from: http://hdl.handle.net/1957/46100
Oregon State University
10.
Shenk, Myron Daniel.
Some components of test weight of soft white wheat.
Degree: MS, Farm Crops, 1968, Oregon State University
URL: http://hdl.handle.net/1957/46943
► Studies of some components of test weight in Soft White wheat revealed distinct subclass differences. Wheat kernels of Soft White more completely occupied a given…
(more)
▼ Studies of some components of test weight in Soft White
wheat
revealed distinct subclass differences.
Wheat kernels of Soft White
more completely occupied a given volume than did kernels of White
Club. The Soft White kernels were larger and had a higher density
than the White Club kernels. Because of their larger size, fewer
Soft White kernels were retained in a given volume.
Due to their higher percent volume occupancy and their greater
kernel density, Soft White wheats had a significantly higher test
weight than White Club wheats.
Studies with wheats which had been sized by maximum cross -
sectional diameter showed that the larger kernels had the highest
test weight. They also had a higher percent volume occupancy than
smaller kernels. However, it was concluded that size, per se, was
not the reason for the higher percent occupancy. The general shape
and condition of the bran coat of large kernels is generally more conducive to close packing than that of smaller kernels. Generally,
kernel density did not differ significantly between the larger sizes.
The smallest kernels had a lower average test weight, kernel
density and occupied less of the volume than the larger kernels.
Often the smallest kernels had wrinkled bran coats or distorted
contours which may have caused the low packing density.
The general shape of White Club kernels is less favorable to
close packing than the longer more cylindrical shape of Soft White
kernels. Therefore, test weight is a measurement of unequal quantities
of
wheat when Soft White and White Club wheats are compared.
Advisors/Committee Members: Goetze, Norman R. (advisor), Sitton, Gordon R. (committee member).
Subjects/Keywords: Wheat
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APA (6th Edition):
Shenk, M. D. (1968). Some components of test weight of soft white wheat. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/46943
Chicago Manual of Style (16th Edition):
Shenk, Myron Daniel. “Some components of test weight of soft white wheat.” 1968. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/46943.
MLA Handbook (7th Edition):
Shenk, Myron Daniel. “Some components of test weight of soft white wheat.” 1968. Web. 21 Apr 2021.
Vancouver:
Shenk MD. Some components of test weight of soft white wheat. [Internet] [Masters thesis]. Oregon State University; 1968. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/46943.
Council of Science Editors:
Shenk MD. Some components of test weight of soft white wheat. [Masters Thesis]. Oregon State University; 1968. Available from: http://hdl.handle.net/1957/46943
Oregon State University
11.
Yu, Michelle Hui-ming.
Effect of wheat bran on fecal nutrients and bowel function in humans.
Degree: MS, Foods and Nutrition, 1979, Oregon State University
URL: http://hdl.handle.net/1957/28159
► The effect of cooked wheat bran on the excretion of fecal nutrients, fecal weight, and transit time was investigated in 10 men, aged 20 to…
(more)
▼ The effect of cooked
wheat bran on the excretion of
fecal nutrients, fecal weight, and transit time was investigated
in 10 men, aged 20 to 35 years. The study was
divided into three 18-day periods. The subjects were
divided into two groups; one received the basal diet supplemented
with 15 g of AACC Certified Food Grade
Wheat
Bran (B) during the first period, no bran (NB) in the
second, and B in the third. The other group received NB,
B and NB in that order. The basal diet supplied 6.6 g
neutral detergent fiber (NDF). The subjects' fat intake
was constant. All feces were collected; values for each
subject were obtained from the second and third 6-day
fecal composites of each period. Bran induced significantly
higher (p<0.0l) fecal loss of energy, nitrogen and
ash. In response to B and NB diets, respectively, mean fecal caloric output was 211±27 and 179±27 kcal/day; mean
fecal nitrogen was 2.1±0.3 and 1.9±0.3 g/day; fecal ash was
5.0±0.5 and 4.3±0.5 g/day. Although the mean daily fat
excretion was higher on B (5.4±1.7 g) than on NB (4.5±1.3
g), the difference was not statistically significant. Bran
caused a consistent increase in fat loss only in one group
of subjects. Fecal NDF (determined in the last 6-day composite
of each period) was higher (p<0.05) on B (8.3±2.2g/
day) than on NB (5.1±2.6 g/day). Fecal wet weight and dry
solids, respectively, were higher (p<0.05 and p<0.01)
when the subjects received B (172±39 and 43±3 g/day) than
when they received NB (143±34 and 36±4). Percentage moisture
content of the feces was not altered by bran supplementation.
Mean transit time in hours was shorter on B
(28.5±4.8) than NB (32.3±8.4); the difference, however, was not
statistically significant. Results suggested that cooked
wheat bran may cause increase in nutrient loss in feces.
The increment, however, may not be important nutritionally.
Advisors/Committee Members: Miller, Lorraine T. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Yu, M. H. (1979). Effect of wheat bran on fecal nutrients and bowel function in humans. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/28159
Chicago Manual of Style (16th Edition):
Yu, Michelle Hui-ming. “Effect of wheat bran on fecal nutrients and bowel function in humans.” 1979. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/28159.
MLA Handbook (7th Edition):
Yu, Michelle Hui-ming. “Effect of wheat bran on fecal nutrients and bowel function in humans.” 1979. Web. 21 Apr 2021.
Vancouver:
Yu MH. Effect of wheat bran on fecal nutrients and bowel function in humans. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/28159.
Council of Science Editors:
Yu MH. Effect of wheat bran on fecal nutrients and bowel function in humans. [Masters Thesis]. Oregon State University; 1979. Available from: http://hdl.handle.net/1957/28159
Oregon State University
12.
Caputo, John Anthony.
Effects of nitrogen applied on wheat straw on winter wheat (Triticum aestivum L.) yields in western Oregon.
Degree: MS, Soil Science, 1985, Oregon State University
URL: http://hdl.handle.net/1957/40844
► Nitrogen deficiency during the winter where winter wheat (Triticum aestivum L.) follows wheat and large amounts of straw have been plowed down has been a…
(more)
▼ Nitrogen deficiency during the winter where winter
wheat
(Triticum aestivum L.) follows
wheat and large amounts of straw
have been plowed down has been a factor limiting yield in the
Willamette Valley of western Oregon. Field experiments were
established to determine if an application of N on the stubble or
before plowing, in addition to standard practice of applying 23 kg
N/ha at planting, would increase yields.
Prior to fertilizer application, the stubble remaining after
harvest was chopped and spread with a modified forage harvester to
provide for even distribution of the straw and chaff rows. Liquid
nitrogen fertilizers were sprayed on the stubble at either a 23,
45, or 90 kg N/ha rate prior to incorporation. Three fertilizer
sources were used, Urea Sulfuric Acid (URS), ammonium sulfate
(AMS), and sewage sludge (SS), to compare the relative efficiency
of each. Various rates of spring fertilizers were applied as
subplots to the fall fertilizer main plots.
Whole plant samples were taken before harvest to determine the
N uptake of each treatment. Samples were separated into grain and
straw components, ground, and analyzed by a micro-Kjeldahl
procedure for N content.
Fall fertilization above the standard 23 kg N /ha applied at
planting had varying effects on yield. In general, there was
little or no response from the additional N during the first
growing season after application. When additional fall N was
applied on a field for two consecutive years, a yield response was
usually realized. Yield increases from URS were equal to or better
than yield increases from AMS. Sewage sludge generally yielded
better than the fall check. Nitrogen uptake was not significantly
influenced by the fall N in the first year of application, but did
show some response where fall N was applied for two consecutive
years.
The additional fall N is not used with the same efficiency as
spring applied N probably because the N is immobilized by the
stubble, soil organic matter, and microorganisms. Further research
is needed to determine the optimum rates and times of N application
during the fall and/or winter. Future experiments need to compare
the efficiency of N applied on the stubble compared with December,
January, or February applications, which could be combined with
herbicide application operations.
Advisors/Committee Members: Jackson, Thomas L. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Caputo, J. A. (1985). Effects of nitrogen applied on wheat straw on winter wheat (Triticum aestivum L.) yields in western Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/40844
Chicago Manual of Style (16th Edition):
Caputo, John Anthony. “Effects of nitrogen applied on wheat straw on winter wheat (Triticum aestivum L.) yields in western Oregon.” 1985. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/40844.
MLA Handbook (7th Edition):
Caputo, John Anthony. “Effects of nitrogen applied on wheat straw on winter wheat (Triticum aestivum L.) yields in western Oregon.” 1985. Web. 21 Apr 2021.
Vancouver:
Caputo JA. Effects of nitrogen applied on wheat straw on winter wheat (Triticum aestivum L.) yields in western Oregon. [Internet] [Masters thesis]. Oregon State University; 1985. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/40844.
Council of Science Editors:
Caputo JA. Effects of nitrogen applied on wheat straw on winter wheat (Triticum aestivum L.) yields in western Oregon. [Masters Thesis]. Oregon State University; 1985. Available from: http://hdl.handle.net/1957/40844
Oregon State University
13.
Choi, Byung Han.
Nature of inheritance and association of time, duration and rate of grain filling and subsequent grain yield in crosses of winter and spring wheats (Triticum aestivum L. em Thell).
Degree: PhD, Crop Science, 1983, Oregon State University
URL: http://hdl.handle.net/1957/41249
► The nature of inheritance and possible associations for traits influencing earliness and grain yield were investigated using a four parent diallel of winter and spring…
(more)
▼ The nature of inheritance and possible associations for traits
influencing earliness and grain yield were investigated using a four
parent diallel of winter and spring
wheat cultivars.
More genetic variability was observed for the traits measured in
segregating populations resulting from crosses between winter and spring
type wheats in contrast to spring x spring or winter x winter crosses.
The one exception was plant height where more genetic variability resulted
from spring x spring crosses.
Narrow sense heritability estimates were high for time and duration
of heading, anthesis, grain filling and physiological maturity and for
plant height. Smaller values were noted for rate of grain filling, kernel
number, harvest index, tiller number, kernel weight, whole plant dry
weight and grain yield.
Estimates of the coefficient of heritability and the parent-offspring
correlation coefficient were similar in magnitude except for the traits
grain yield, tiller number, kernel weight and whole plant dry weight
where large variations due to the environment were encountered.
Using the Jinks-Hayman model, no maternal effects were noted nor
were any nonallelic interactions observed for total duration of grain
filling and lag period. The actual grain filling period was influenced
to some degree by such interactions. The spring cultivars also appeared
to have more dominant genes for longer total duration of grain filling
and lag period. In contrast the winter parents had more dominant genes
for the longer actual grain filling period.
Estimates of general and specific combining ability provided similar
evidence in terms of the nature of gene action. Both additive and nonadditive
gene action was present for all traits, the relative magnitudes
depending on the specific trait. Based on individual combining ability
effects, the winter x spring cross Yamhill x Siete Cerros would appear
to provide the highest proportion of desired segregates when combining
earliness and acceptable grain yield.
From the direct and indirect associations of grain yield, it would
appear that a shorter duration of grain filling along with a shorter lag
period from heading to anthesis are important for higher rates of grain
filling if negative associations between earliness and grain yield are
to be avoided.
Advisors/Committee Members: Kronstad, Warren E. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Choi, B. H. (1983). Nature of inheritance and association of time, duration and rate of grain filling and subsequent grain yield in crosses of winter and spring wheats (Triticum aestivum L. em Thell). (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/41249
Chicago Manual of Style (16th Edition):
Choi, Byung Han. “Nature of inheritance and association of time, duration and rate of grain filling and subsequent grain yield in crosses of winter and spring wheats (Triticum aestivum L. em Thell).” 1983. Doctoral Dissertation, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/41249.
MLA Handbook (7th Edition):
Choi, Byung Han. “Nature of inheritance and association of time, duration and rate of grain filling and subsequent grain yield in crosses of winter and spring wheats (Triticum aestivum L. em Thell).” 1983. Web. 21 Apr 2021.
Vancouver:
Choi BH. Nature of inheritance and association of time, duration and rate of grain filling and subsequent grain yield in crosses of winter and spring wheats (Triticum aestivum L. em Thell). [Internet] [Doctoral dissertation]. Oregon State University; 1983. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/41249.
Council of Science Editors:
Choi BH. Nature of inheritance and association of time, duration and rate of grain filling and subsequent grain yield in crosses of winter and spring wheats (Triticum aestivum L. em Thell). [Doctoral Dissertation]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/41249
Oregon State University
14.
Noori, Fariborz.
The effect of water injection at seeding in dry soil on the germination and growth of winter wheat (Triticum aestivum L.).
Degree: PhD, Crop Science, 1982, Oregon State University
URL: http://hdl.handle.net/1957/41524
► Stand establishment plays a significant role in the development and yield of winter wheat (Triticum aestivum L.). Availability of soil moisture to the germinating seed…
(more)
▼ Stand establishment plays a significant role in the development
and yield of winter
wheat (Triticum aestivum L.). Availability of
soil moisture to the germinating seed is one of the most critical
factors affecting stand establishment. Water injection is a method
of applying supplemental moisture to the soil in direct contact with
the seed by injecting small amounts of water into seed-zone at
planting. The purpose of this study was to evaluate water injection
as a means of enhancing stand establishment by improving soil
moisture conditions surrounding the germinating seed. Several water
injection and combinations of water with liquid starter fertilizer
treatments were compared with a check which received no water, under
different soil water potential treatments in growth chambers and in
field studies. Two soft white winter
wheat cultivars, Faro and
Stephens, were compared.
In preliminary experiments water was added to the seed-zone of
dry soil (-11 bars) at rates of 20, 30, 40, 50, and 60 ml/m row in
one experiment 30, 40, 50, 60, and 70 ml/m row in another (soil at
-15 bars). These treatments increased seed-zone moisture content
immediately after adding water and the moisture remained higher for
9 days. Thus, it appeared that water injection should be effective
in hastening imbibition by seeds. Subsequently, 40, 50 and 60 ml/m
row water only and combination of each water rate with 5 ml/m row
of a liquid fertilizer mixture, 10-34-0, improved stand establishment
over the check under -11 and -15 bars soil moisture potentials.
Higher concentrations of liquid fertilizer depressed germination
and emergence rate. These studies were done in growth chambers.
Water alone at rate of 50 ml/m and the combination of 50 ml/m
water plus 5 ml/m 10-34-0 treatments, resulted in greater stand
establishment, plant growth and yield compared to the check under
-11 bars tension in 1979-80 field study. Cultivars did not differ
in stand establishment and plant growth due to water or water plus
fertilizer injection.
Both 20 and 40 ml water only treatments improved stand establishment
over the check, but the 40 ml water/m row rate resulted
in the greatest emergence and gave the highest emergence rate index
under -11 and -9 bars tension in 1980 growth chamber study and
1980-81 field study, respectively. The 40 ml water/m row alone and
the combination of 40 ml water/m row with low rates of fertilizer
improved plant development, leaf P content and yield over the checks
under -9 bars tension in 1980-81 field study.
All three water injections at rates of 20, 40 and 60 ml/m in
1981-82 field study increased seed-zone moisture content, and
improved imbibition, stand establishment and seedling growth over
the check in fallowed (-6 bars) and non-fallowed (-8 bars).
Advisors/Committee Members: Moss, Dale N. (advisor), Gardner, Hugh (committee member).
Subjects/Keywords: Wheat
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APA (6th Edition):
Noori, F. (1982). The effect of water injection at seeding in dry soil on the germination and growth of winter wheat (Triticum aestivum L.). (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/41524
Chicago Manual of Style (16th Edition):
Noori, Fariborz. “The effect of water injection at seeding in dry soil on the germination and growth of winter wheat (Triticum aestivum L.).” 1982. Doctoral Dissertation, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/41524.
MLA Handbook (7th Edition):
Noori, Fariborz. “The effect of water injection at seeding in dry soil on the germination and growth of winter wheat (Triticum aestivum L.).” 1982. Web. 21 Apr 2021.
Vancouver:
Noori F. The effect of water injection at seeding in dry soil on the germination and growth of winter wheat (Triticum aestivum L.). [Internet] [Doctoral dissertation]. Oregon State University; 1982. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/41524.
Council of Science Editors:
Noori F. The effect of water injection at seeding in dry soil on the germination and growth of winter wheat (Triticum aestivum L.). [Doctoral Dissertation]. Oregon State University; 1982. Available from: http://hdl.handle.net/1957/41524
Oregon State University
15.
Huber, Andrew Gail, 1944-.
Endosperm morphogenesis in wheat (Triticum aestivum L.).
Degree: PhD, Crop Science, 1983, Oregon State University
URL: http://hdl.handle.net/1957/41530
► Wheat endosperm morphogenesis was studied by light microscopy during the entire growth period of anthesis to maturity. Four developmental stages have been described in this…
(more)
▼ Wheat endosperm morphogenesis was studied by light microscopy
during the entire growth period of anthesis to maturity. Four
developmental stages have been described in this thesis: (1) double
fertilization, (2) formation of the lower endosperm cells, (3)
termination of nuclear divisions, and (4) initiation of protein
bodies.
The first manuscript reviews double fertilization and provides
photographs of the embryo sac, pollen tube growth, syngamy and triple
fusion. The descriptions made by previous researchers are compared
with the observations of the writer.
Early endosperm growth was characterized by nuclear divisions
without formation of cell walls. During the first 4 days of growth,
dense endosperm cells were formed above the embryo by a unique and
previously undescribed mechanism. Cytoplasmic vesicles were formed
in the upper endosperm, bordering the antipodals. Those vesicles
fell to the gravitational bottom of the embryo sac, coalesced and
were divided into cells by walls growing in from the nucellus.
Later, those cells were entirely consumed by the developing embryo.
Morphogenetically, cytoplasmic vesicles were the mechanism by
which nutrients were transferred from the antipodals to the lower
endosperm and ultimately to the embryo.
The upper embryo sac vacuole was cellularized by cytoplasmic
projections from the endosperm nuclei. The nuclei then divided in
all areas of the embryo sac, as long as space was available. During
the ninth to twelfth days after anthesis, the cuticularized inner
integument and nucellar epidermis stopped growing. That limited the
space available for nuclear divisions in the endosperm. Between the
thirteenth and fifteenth days after anthesis, endosperm nuclei
stopped dividing. It is concluded that endosperm nuclear division
was limited to the space within the inner integument and nucellar
epidermis. Because that space stopped increasing by 14 days after
anthesis, endosperm cell number was spacially limited.
After cell formation had ceased, the endosperm nuclei released
their nucleoli into the cell vacuole. Those nucleoli enlarged and
acquired safranin stain like protein bodies. The nuclei broke down
and released other chromosome-sized particles which also united and
formed protein bodies. It is concluded that
wheat endosperm protein
bodies originate from nucleoli.
Advisors/Committee Members: Grabe, Don F. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Huber, Andrew Gail, 1. (1983). Endosperm morphogenesis in wheat (Triticum aestivum L.). (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/41530
Chicago Manual of Style (16th Edition):
Huber, Andrew Gail, 1944-. “Endosperm morphogenesis in wheat (Triticum aestivum L.).” 1983. Doctoral Dissertation, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/41530.
MLA Handbook (7th Edition):
Huber, Andrew Gail, 1944-. “Endosperm morphogenesis in wheat (Triticum aestivum L.).” 1983. Web. 21 Apr 2021.
Vancouver:
Huber, Andrew Gail 1. Endosperm morphogenesis in wheat (Triticum aestivum L.). [Internet] [Doctoral dissertation]. Oregon State University; 1983. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/41530.
Council of Science Editors:
Huber, Andrew Gail 1. Endosperm morphogenesis in wheat (Triticum aestivum L.). [Doctoral Dissertation]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/41530
Oregon State University
16.
Agamennoni, Raul Jose.
The effect of fertility level on plant growth and development, water uptake and water stress in dryland wheat production.
Degree: MS, Crop Science, 1983, Oregon State University
URL: http://hdl.handle.net/1957/41443
► Dryland winter wheat in eastern Oregon is usually subjected to water stress several times during the growing period. Moreover, the last three months of growth…
(more)
▼ Dryland winter
wheat in eastern Oregon is usually subjected to
water stress several times during the growing period. Moreover, the
last three months of growth period depend strongly on the available
soil water. The fertility level, stage of growth, availability of
soil water and climatic conditions all interact to determine the
severity of crop water stress. The level of nitrogen and phosphorus
fertility in the growing
wheat crop can affect plant growth and
development, water uptake and the incidence and severity of water
stress. In order to gain a better understanding of the complex
interactions leading to water stress in the
wheat crop, a means of
determining when and how long the stress occurs is needed. The Crop
Water Stress Index (CWSI) developed by Idso et al in 1981 utilizing
the infrared thermometer was used to determine the crop water stress
level during the critical spring growth period.
The objectives of this work were: (1) to study the effect of N
and P fertilization levels on crop water stress and water uptake by
the crop; (2) to describe the crop water stress phenomenon in order
to help explain when, and why water stress occurs; (3) to analyze the
dry matter production and partitioning and yield components as related to fertilization, crop water stress and date of planting; and
(4) to attempt to develop an equation to predict grain yield of soft
white winter
wheat in Oregon, given a certain level of water stress
assessed by the CWSI.
Two types of field fertilizer experiments were conducted using
a soft white winter
wheat cv. Stephens at the Sherman Experiment
Station, Moro, Oregon during the 1982 and 1983 seasons.
Atypical climatic conditions with precipitation and relative
humidity levels greater than, and maximum temperatures less than the
long-term means combined to produce a relatively low level of crop
water stress. There were two relatively short periods in 1982 in
which moderate to severe crop water stress occurred. The CWSI
proved capable of detecting the severity and duration of these
stress periods with a good level of reliability.
Nitrogen fertilization increased the total crop water uptake.
Coincidentally, CWSI level was always reduced with the addition of
N. The only exception was in one N experiment in 1982, in which
water uptake was not increased with N fertilization.
The total dry matter production and yield relationship was
indicative of the climatic conditions which produced nearly optimum
soil water conditions in the 1982 and 1983 seasons.
Nitrogen increased total dry matter production during both
seasons, with a higher level being evident in 1983.
The yield increase from the added nitrogen was mainly due to an
increase in spike number and to a lesser extent an increase in the
number of kernels per spike. Late plantings produced larger individual spikes with a greater
number of kernels than earlier seeding , but these differences were
not great enough to overcome the drastic reduction in spike number.
A logarithmic relationship between…
Advisors/Committee Members: Bolton, Floyd E. (advisor), McCuistion, Willis L. (committee member).
Subjects/Keywords: Wheat
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APA (6th Edition):
Agamennoni, R. J. (1983). The effect of fertility level on plant growth and development, water uptake and water stress in dryland wheat production. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/41443
Chicago Manual of Style (16th Edition):
Agamennoni, Raul Jose. “The effect of fertility level on plant growth and development, water uptake and water stress in dryland wheat production.” 1983. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/41443.
MLA Handbook (7th Edition):
Agamennoni, Raul Jose. “The effect of fertility level on plant growth and development, water uptake and water stress in dryland wheat production.” 1983. Web. 21 Apr 2021.
Vancouver:
Agamennoni RJ. The effect of fertility level on plant growth and development, water uptake and water stress in dryland wheat production. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/41443.
Council of Science Editors:
Agamennoni RJ. The effect of fertility level on plant growth and development, water uptake and water stress in dryland wheat production. [Masters Thesis]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/41443
Oregon State University
17.
Ott, Pablo.
Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim.
Degree: MS, Crop Science, 1983, Oregon State University
URL: http://hdl.handle.net/1957/41839
► Volunteer winter wheat (Triticum aestivum 'Daws') severely suppressed growth of fall-planted alfalfa (Medicago sativa (L.) 'Vernal') seedlings. Wheat competition began soon after alfalfa emerged and…
(more)
▼ Volunteer winter
wheat (Triticum aestivum 'Daws')
severely suppressed growth of fall-planted alfalfa
(Medicago sativa (L.) 'Vernal') seedlings.
Wheat
competition began soon after alfalfa emerged and continued
until the first forage harvest the following May. Alfalfa
yield at the first cutting was reduced by 1% for each day
volunteer
wheat was allowed to grow within the period of 20
to 41 days after planting. When the
wheat remained until
harvest, alfalfa yield was reduced by 85%.
Fluazifop-butyl (+) -butyl 2-[4-[[5-(trifluoromethyl)-
2- pyridinyl] oxy] phenoxy] propanoate and sethoxydim 2-
(1- (ethoxyimino)butyl] 5- [2- (ethylthio)propyl] -3-hydroxy-
2-cyclohexen-l-one at rates as high as 3.2 kg/ha (plus
phytobland oil at 2.3 L/ha) did not injure the alfalfa or
reduce the yield of alfalfa hay when applied at any stage
of growth from the unifoliate to the fully developed
stages.
Control of
wheat was better when fluazifop-butyl and
sethoxydim were applied in the fall than in the summer.
Both herbicides controlled
wheat slightly better when
applied in the one- to five- tiller stages than at earlier
or later stages of growth. In general, fluazifop-butyl was
more effective than sethoxydim when applied at any given
rate. Under favorable conditions, rates of fluazifop-butyl
and sethoxydim as low as 0.12 and 0.18 kg/ha, respectively,
killed
wheat.
Wheat growth was suppressed at even lower
rates. However, higher rates (0.2 and 0.4 kg/ha of fluazifop-
butyl and sethoxydim, respectively) were required to
provide a long term effect under a broad range of conditions.
The activity of fluazifop-butyl applied at the twotiller
stage of
wheat took place mainly through foliar
rather than root exposure. Fluazifop-butyl at 0.2 kg/ha
killed
wheat regardless of the soil moisture content (8% vs
15%). The activity of fluazifop-butyl at 0.12, 0.18, and
0.24 kg/ha on
wheat was severely reduced when combined with
the dimethylamine salt of 2,4-DB [4- (2,4- dichlorophenoxy)
butyric acid] at 1.8 kg/ha, but the antagonism was overcome
by increasing the rate of the grass killer to 0.36 kg/ha.
Advisors/Committee Members: Dawson, Jean H. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Ott, P. (1983). Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/41839
Chicago Manual of Style (16th Edition):
Ott, Pablo. “Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim.” 1983. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/41839.
MLA Handbook (7th Edition):
Ott, Pablo. “Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim.” 1983. Web. 21 Apr 2021.
Vancouver:
Ott P. Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim. [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/41839.
Council of Science Editors:
Ott P. Selective control of volunteer wheat (Triticum aestivum (L.) em. Thell.) in new seedlings of alfalfa (Medicago sativa L.) with fluazifop-butyl and sethoxydim. [Masters Thesis]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/41839
Oregon State University
18.
Marciniak, Michael E.
Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.).
Degree: MS, Crop Science, 1983, Oregon State University
URL: http://hdl.handle.net/1957/41835
► Visual selection for grain yield may be a limiting factor in identifying superior yielding genotypes in a breeding program. This investigation was conducted (1) to…
(more)
▼ Visual selection for grain yield may be a limiting factor in
identifying superior yielding genotypes in a breeding program. This
investigation was conducted (1) to compare the effectiveness of
visual selection for grain yield by three selector groups representing different levels of plant breeding experience, and (2) to
examine the association of selected traits with the process of
evaluating plots visually for grain yield.
The germplasm evaluated consisted of fifty non-segregating,
diverse genotypes selected to include a wide range of expression for
phenotypic characters. They were grown in solid-seeded, two-row
plots with three replications in a randomized block design during
1981-1982. Data were collected on a plot basis for grain yield and
twenty-two agronomic traits.
Eighteen selectors were placed in three groups comprised of two
plant breeders, eight graduate students, and eight summer student
workers, respectively, from the Oregon State University cereal
breeding program. Evaluations were made on two separate days by
scoring each of the 150 plots on a scale of 1 to 5 for grain yield. The plant breeder selectors were the most successful of the
three groups in discriminating both high and low yielding plots.
The two best graduate student selectors were similar in ability to
the plant breeders in scoring plots for high yield, although not in
scoring for low yield. The remaining graduate student and summer
worker selectors were generally not able to score more low and high
yielding plots "correctly" than would be expected if selection were
done at random.
Considered individually, the most effective selectors failed
to select several high yielding plots. However, when selections of
the four most effective selectors were combined, only one of the
twenty highest yielding plots was omitted.
Results comparing trait association with actual plot grain yield
and with selector scoring for plot grain yield suggested "biases"
for or against certain traits. Biases for later heading and
maturing plant types with wide flag leaves were common to all selector groups when visually selecting for high yield, as were earlier
heading and maturing entries with narrower flag leaves when selecting for low yield. The plant breeder selectors were notable for
lack of trait biases relative to other selector groups. In contrast, the summer worker selectors tended to overemphasize several
spike characteristics whether selecting for high or low yield. Results suggested several other trait biases of individual selectors
and selector groups.
Advisors/Committee Members: McCuistion, Willis L. (advisor), Kronstad, Warren (committee member).
Subjects/Keywords: Wheat
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APA (6th Edition):
Marciniak, M. E. (1983). Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.). (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/41835
Chicago Manual of Style (16th Edition):
Marciniak, Michael E. “Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.).” 1983. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/41835.
MLA Handbook (7th Edition):
Marciniak, Michael E. “Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.).” 1983. Web. 21 Apr 2021.
Vancouver:
Marciniak ME. Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.). [Internet] [Masters thesis]. Oregon State University; 1983. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/41835.
Council of Science Editors:
Marciniak ME. Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.). [Masters Thesis]. Oregon State University; 1983. Available from: http://hdl.handle.net/1957/41835
Oregon State University
19.
Nadjib, Benacef.
The effect of row spacing, rate and date of planting on yield and yield components of four winter wheat cultivars (Triticum aestivum L. em Thell).
Degree: MS, Crop Science, 1982, Oregon State University
URL: http://hdl.handle.net/1957/42039
► Four winter wheat cultivars, Bezostaya, Maris-Hobbit, Roussalka and Stephens, selected on the basis of the diversity of their pedigree and phenotype, were planted at Hyslop…
(more)
▼ Four winter
wheat cultivars, Bezostaya, Maris-Hobbit, Roussalka
and Stephens, selected on the basis of the diversity of their pedigree and phenotype, were planted at Hyslop Experiment Station near
Corvallis in Western Oregon to study their performance at three
different row spacings (10, 16 and 24 cm), three seeding rates
(100, 160, and 240 Kg/ha) and at two seeding dates (October 13 and
November 12). A similar experiment was conducted at the Sherman
Experiment Station, Moro in Eastern Oregon, using only two winter
wheat cultivars, Stephens and Jackmar. Data were obtained on grain
yield, tillers and spikes per square meter, heading and anthesis date,
plant height, kernels per spike, 1000 kernel weight, test weight and
harvest index.
At Hyslop Experiment Station, Stephens, Bezostaya and Roussalka produced maximum grain yield at 10 cm row spacing and 160 Kg/ha
seeding rate, and Maris-Hobbit at 24 cm row spacing and 160 Kg/ha
seeding rate. At Sherman Experiment Station, 30 cm row spacing and
90 Kg/ha seeding rate constitutes the best combination for Stephens,
and 30 cm row spacing and 120 Kg/ha seeding rate for the club
wheat
Jackmar.
The interaction between row spacings x cultivars and seeding
rates x cultivars indicated that all the cultivars produced high numbers of tillers and spikes per m² at narrow (10 cm) row spacing
and high (240 Kg/ha) seeding rate. There were no significant differences between row spacings for heading and anthesis date. Lower
seeding rate resulted in later heading date. The cultivar Roussalka
was the earliest and Maris-Hobbit the latest in average heading date,
Plant height decreased with increased row spacing and increased
with increased seeding rate. The plants of the four cultivars were
shorter at the second date than at the first.
More kernels per spike were produced at the second than at the
first date. An increase in seeding rates was accompanied by a decrease in the number of kernels per spike.
There were no significant differences between the three row
spacings, the three seeding rates and the four cultivars for test
weight.
The different row spacings and seeding rates did not affect the
TOGO kernel weight. Considering the cultivars, Stephens produced
a higher 1000 kernel weight at the two seeding dates than Maris-
Hobbit, Bezostaya and Roussalka.
Advisors/Committee Members: McCuistion, Willis L. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Nadjib, B. (1982). The effect of row spacing, rate and date of planting on yield and yield components of four winter wheat cultivars (Triticum aestivum L. em Thell). (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42039
Chicago Manual of Style (16th Edition):
Nadjib, Benacef. “The effect of row spacing, rate and date of planting on yield and yield components of four winter wheat cultivars (Triticum aestivum L. em Thell).” 1982. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/42039.
MLA Handbook (7th Edition):
Nadjib, Benacef. “The effect of row spacing, rate and date of planting on yield and yield components of four winter wheat cultivars (Triticum aestivum L. em Thell).” 1982. Web. 21 Apr 2021.
Vancouver:
Nadjib B. The effect of row spacing, rate and date of planting on yield and yield components of four winter wheat cultivars (Triticum aestivum L. em Thell). [Internet] [Masters thesis]. Oregon State University; 1982. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/42039.
Council of Science Editors:
Nadjib B. The effect of row spacing, rate and date of planting on yield and yield components of four winter wheat cultivars (Triticum aestivum L. em Thell). [Masters Thesis]. Oregon State University; 1982. Available from: http://hdl.handle.net/1957/42039
Oregon State University
20.
Taylor, Ronald G.
The influence of seeding date, soil pH, nitrogen form, phosphorus, and chloride fertilization on take-all root rot (Gaeumannomyces graminis var. tritici) of winter wheat.
Degree: MS, Soil Science, 1981, Oregon State University
URL: http://hdl.handle.net/1957/42242
Subjects/Keywords: Wheat
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APA (6th Edition):
Taylor, R. G. (1981). The influence of seeding date, soil pH, nitrogen form, phosphorus, and chloride fertilization on take-all root rot (Gaeumannomyces graminis var. tritici) of winter wheat. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42242
Chicago Manual of Style (16th Edition):
Taylor, Ronald G. “The influence of seeding date, soil pH, nitrogen form, phosphorus, and chloride fertilization on take-all root rot (Gaeumannomyces graminis var. tritici) of winter wheat.” 1981. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/42242.
MLA Handbook (7th Edition):
Taylor, Ronald G. “The influence of seeding date, soil pH, nitrogen form, phosphorus, and chloride fertilization on take-all root rot (Gaeumannomyces graminis var. tritici) of winter wheat.” 1981. Web. 21 Apr 2021.
Vancouver:
Taylor RG. The influence of seeding date, soil pH, nitrogen form, phosphorus, and chloride fertilization on take-all root rot (Gaeumannomyces graminis var. tritici) of winter wheat. [Internet] [Masters thesis]. Oregon State University; 1981. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/42242.
Council of Science Editors:
Taylor RG. The influence of seeding date, soil pH, nitrogen form, phosphorus, and chloride fertilization on take-all root rot (Gaeumannomyces graminis var. tritici) of winter wheat. [Masters Thesis]. Oregon State University; 1981. Available from: http://hdl.handle.net/1957/42242
Oregon State University
21.
Min, Hwang Kee.
Association between length of grain filling period and grain yield in two wheat populations (Triticum aestivum L. em Thell.).
Degree: MS, Crop Science, 1980, Oregon State University
URL: http://hdl.handle.net/1957/42711
► The objective of this study was to determine interrelationships among agronomic traits in early and late maturing populations. Two populations were obtained from the crosses,…
(more)
▼ The objective of this study was to determine interrelationships among agronomic traits in early and late maturing populations. Two populations were obtained from the crosses, Roussalka/Tesopaco 76 and Yamhill/Aspen. Seeds were space planted with split plot design and nine agronomic traits were observed. In comparative studies between early and late populations, the early population was earlier in heading date, maturity date, longer maturity duration, heavier kernel weight, and higher harvest index. However, it was shorter in plant height, had fewer tillers, kernels and lower grain yield than the late population. Grain filling duration expressed positive relationships with grain yield in both crosses, although the correlation coefficient with grain yield was very low compared to other agronomic traits. Grain filling duration showed consistent positive relationships with kernel weight in both populations and with kernel number in the late population. No relationship was found between grain filling duration and tiller number. Grain filling duration influenced grain yield mainly by the indirect effects of kernel weight and kernel number. Yield components generally showed high positive relationships with grain yield; tiller number being the most important, followed by kernel number, and kernel weight. Competition among yield components was minimal in this space planted study. Heading date showed a negative association while plant height and harvest index expressed high positive relationships with grain yield.
Advisors/Committee Members: McCuistion, Willis L. (advisor), Kronstad, W. E. (committee member).
Subjects/Keywords: Wheat
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APA (6th Edition):
Min, H. K. (1980). Association between length of grain filling period and grain yield in two wheat populations (Triticum aestivum L. em Thell.). (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42711
Chicago Manual of Style (16th Edition):
Min, Hwang Kee. “Association between length of grain filling period and grain yield in two wheat populations (Triticum aestivum L. em Thell.).” 1980. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/42711.
MLA Handbook (7th Edition):
Min, Hwang Kee. “Association between length of grain filling period and grain yield in two wheat populations (Triticum aestivum L. em Thell.).” 1980. Web. 21 Apr 2021.
Vancouver:
Min HK. Association between length of grain filling period and grain yield in two wheat populations (Triticum aestivum L. em Thell.). [Internet] [Masters thesis]. Oregon State University; 1980. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/42711.
Council of Science Editors:
Min HK. Association between length of grain filling period and grain yield in two wheat populations (Triticum aestivum L. em Thell.). [Masters Thesis]. Oregon State University; 1980. Available from: http://hdl.handle.net/1957/42711
Oregon State University
22.
Ekse, Ali Osman.
Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell).
Degree: MS, Crop Science, 1980, Oregon State University
URL: http://hdl.handle.net/1957/42417
► Three chemicals SD 55446, SD 55447 and WL 84245 were found to induce male sterility in cultivars of wheat or triticale. Both SD 55446 and…
(more)
▼ Three chemicals SD 55446, SD 55447 and WL 84245 were found to
induce male sterility in cultivars of
wheat or triticale. Both SD 55446
and SD 55447 when applied at a concentration of 0.896 kg/ha resulted
in 90% male sterility. However, SD 55447 caused female sterility at
the same concentration either in single or split applications. Both
chemicals reduced plant height and grain yield and inhibited spike
emergence. The phytotoxic effects were reduced when the applications
were delayed until the early stage of spikelet formation.
A chemical x cultivar interaction was observed in both
wheat and
triticale when the concentration of 0.67 kg/ha and/or 0.84 kg/ha of
SD 55446 were applied at the second node detectable of stem elongation
stage and the early stage of spikelet formation. The chemical induced
male sterility up to 98.8% depending on cultivars and concentrations
without influencing female fertility.
Using two genetic marker lines (blue aleurone) and two chemicals
SD 55446 and WL 84245, an estimate of the amount of induced and natural
out-crossing was obtained. Induced out-crossing was found to range
from 17% to 23% depending on the location. A higher percentage of out-crossing was noted with SD 55446 than WL 84245. Natural outcrossing
in two cultivars, Yamhill and Stephens, was found to be
less than one percent. The amount of induced and natural outcrossing
varied depending on the direction and distance from the
blue aleurone pollen source. No blue seed was obtained at a distance
beyond 20 meters from the pollinator.
All three chemicals induced more than 90% male sterility; however,
some female sterility was also observed. This latter factor, plus
other phytotoxicity, can be minimized by using optimum application
times and concentrations. However, these adverse effects coupled
with limited out-crossing in induced male sterile plots appear to
prohibit the use of these chemicals for large scale commercial hybrid
seed production.
Advisors/Committee Members: Kronstad, Warren E. (advisor), Petersen, R. G. (committee member).
Subjects/Keywords: Wheat
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APA (6th Edition):
Ekse, A. O. (1980). Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell). (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42417
Chicago Manual of Style (16th Edition):
Ekse, Ali Osman. “Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell).” 1980. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/42417.
MLA Handbook (7th Edition):
Ekse, Ali Osman. “Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell).” 1980. Web. 21 Apr 2021.
Vancouver:
Ekse AO. Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell). [Internet] [Masters thesis]. Oregon State University; 1980. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/42417.
Council of Science Editors:
Ekse AO. Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell). [Masters Thesis]. Oregon State University; 1980. Available from: http://hdl.handle.net/1957/42417
Oregon State University
23.
Mansfield, Michael Andrews.
The effects of abscisic acid on protein synthesis in mature and immature embryos of wheat.
Degree: MS, Botany, 1981, Oregon State University
URL: http://hdl.handle.net/1957/42804
Subjects/Keywords: Wheat
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APA (6th Edition):
Mansfield, M. A. (1981). The effects of abscisic acid on protein synthesis in mature and immature embryos of wheat. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42804
Chicago Manual of Style (16th Edition):
Mansfield, Michael Andrews. “The effects of abscisic acid on protein synthesis in mature and immature embryos of wheat.” 1981. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/42804.
MLA Handbook (7th Edition):
Mansfield, Michael Andrews. “The effects of abscisic acid on protein synthesis in mature and immature embryos of wheat.” 1981. Web. 21 Apr 2021.
Vancouver:
Mansfield MA. The effects of abscisic acid on protein synthesis in mature and immature embryos of wheat. [Internet] [Masters thesis]. Oregon State University; 1981. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/42804.
Council of Science Editors:
Mansfield MA. The effects of abscisic acid on protein synthesis in mature and immature embryos of wheat. [Masters Thesis]. Oregon State University; 1981. Available from: http://hdl.handle.net/1957/42804
Oregon State University
24.
Gomez-Pando, Luz.
Influence of different nitrogen and moisture levels on the expression of grain yield and protein content in selected wheat (Triticum aestivum, L. em Thell) and barley (Hordeum vulagre, L. em Lam.) cultivars.
Degree: MS, Crop Science, 1981, Oregon State University
URL: http://hdl.handle.net/1957/42588
► This investigation was conducted to provide information regarding 1) the relationship between the nitrogen percentage in the vegetative tissue of wheat and barley at various…
(more)
▼ This investigation was conducted to provide information regarding
1) the relationship between the nitrogen percentage in the vegetative
tissue of
wheat and barley at various growth stages with grain protein
and 2) to evaluate the possible association between grain yield
and grain protein as influenced by different cultivars, nitrogen
levels and available moisture.
Five
wheat and four barley cultivars were selected based on
their diverse genetic backgrounds and potential differences for
the 12 attributes measured. These experimental materials were grown
at low and high rainfall sites and under two different nitrogen levels.
In
wheat a decrease in the percentage of nitrogen in the flag
leaves was found as the plants developed. The highest values were
observed at the boot stage. In contrast, the highest percentage
of nitrogen in the flag leaves of barley was observed at anthesis.
Wheat cultivars which had the greatest genetic potential for grain
protein usually had the highest percentage of nitrogen in the flag
leaves at the boot stage and the lowest percentage in the vegetative
tissue at harvest. This was especially true under high rainfall
conditions. A similar relationship was found for the barley
cultivars.
At both experimental sites higher grain yields were
accompanied by negative associations with grain protein for
wheat.
However, for barley no association was found between these two
traits at either site or fertility level. Higher grain protein
values were found for both
wheat and barley at the high rainfall
site.
Advisors/Committee Members: Kronstad, Warren E. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Gomez-Pando, L. (1981). Influence of different nitrogen and moisture levels on the expression of grain yield and protein content in selected wheat (Triticum aestivum, L. em Thell) and barley (Hordeum vulagre, L. em Lam.) cultivars. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42588
Chicago Manual of Style (16th Edition):
Gomez-Pando, Luz. “Influence of different nitrogen and moisture levels on the expression of grain yield and protein content in selected wheat (Triticum aestivum, L. em Thell) and barley (Hordeum vulagre, L. em Lam.) cultivars.” 1981. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/42588.
MLA Handbook (7th Edition):
Gomez-Pando, Luz. “Influence of different nitrogen and moisture levels on the expression of grain yield and protein content in selected wheat (Triticum aestivum, L. em Thell) and barley (Hordeum vulagre, L. em Lam.) cultivars.” 1981. Web. 21 Apr 2021.
Vancouver:
Gomez-Pando L. Influence of different nitrogen and moisture levels on the expression of grain yield and protein content in selected wheat (Triticum aestivum, L. em Thell) and barley (Hordeum vulagre, L. em Lam.) cultivars. [Internet] [Masters thesis]. Oregon State University; 1981. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/42588.
Council of Science Editors:
Gomez-Pando L. Influence of different nitrogen and moisture levels on the expression of grain yield and protein content in selected wheat (Triticum aestivum, L. em Thell) and barley (Hordeum vulagre, L. em Lam.) cultivars. [Masters Thesis]. Oregon State University; 1981. Available from: http://hdl.handle.net/1957/42588
Oregon State University
25.
Lee, Wha-gi.
Amylolytic enzymes in wheat seeds.
Degree: MS, Crop Science, 1979, Oregon State University
URL: http://hdl.handle.net/1957/42746
Subjects/Keywords: Wheat
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APA (6th Edition):
Lee, W. (1979). Amylolytic enzymes in wheat seeds. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42746
Chicago Manual of Style (16th Edition):
Lee, Wha-gi. “Amylolytic enzymes in wheat seeds.” 1979. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/42746.
MLA Handbook (7th Edition):
Lee, Wha-gi. “Amylolytic enzymes in wheat seeds.” 1979. Web. 21 Apr 2021.
Vancouver:
Lee W. Amylolytic enzymes in wheat seeds. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/42746.
Council of Science Editors:
Lee W. Amylolytic enzymes in wheat seeds. [Masters Thesis]. Oregon State University; 1979. Available from: http://hdl.handle.net/1957/42746
Oregon State University
26.
Gingrich, Gale Allen.
Effect of broadleaf weeds on winter wheat yields.
Degree: MS, Crop Science, 1979, Oregon State University
URL: http://hdl.handle.net/1957/42841
Subjects/Keywords: Wheat
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APA (6th Edition):
Gingrich, G. A. (1979). Effect of broadleaf weeds on winter wheat yields. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42841
Chicago Manual of Style (16th Edition):
Gingrich, Gale Allen. “Effect of broadleaf weeds on winter wheat yields.” 1979. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/42841.
MLA Handbook (7th Edition):
Gingrich, Gale Allen. “Effect of broadleaf weeds on winter wheat yields.” 1979. Web. 21 Apr 2021.
Vancouver:
Gingrich GA. Effect of broadleaf weeds on winter wheat yields. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/42841.
Council of Science Editors:
Gingrich GA. Effect of broadleaf weeds on winter wheat yields. [Masters Thesis]. Oregon State University; 1979. Available from: http://hdl.handle.net/1957/42841
Oregon State University
27.
Roberts, Michael C. (Michael Coy), 1951-.
Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield.
Degree: MS, Crop Science, 1987, Oregon State University
URL: http://hdl.handle.net/1957/40192
► Farmers and researchers are aware of spatial variation in grain yield within farms or fields. Fertilizer management may be improved if techniques can be developed…
(more)
▼ Farmers and researchers are aware of spatial variation in
grain yield within farms or fields. Fertilizer management may be
improved if techniques can be developed to identify grain yield
variations in
wheat fields. Aerial color infrared (CIR)
photography was used to identify winter
wheat (Triticum aestivum
L.) canopy biomass variability in the Spring of the growing
season. Low yielding areas identified from CIR photography were
associated with shallow soil profiles consistent with soil
forming factors of the region, and were significantly different
from average and high yielding areas. The high yielding areas
were located within a few meters of a drainage way, and were not
significantly different than the average yielding areas except in
one field with a deep soil profile and low variance. Fields
with heterogeneous CIR photographs had high variances because of
many dissimilar inclusions. CIR photography, although useful to
distinguish vegetational differences, requires complex timing, ground verification, and correction to estimate yield
variability. A geographic information system (GIS) was used to
overlay photo interpreted biomass and soil map units. The
overlay analysis allowed construction of a higher (first) order
soil map indicating inclusions. Area calculation of the
inclusions and map units using a GIS function combined with
estimated yield (no variance estimates or confidence intervals
associated with the estimated yield) data suggests fertilizer
management with a first order soil map to increase fertilizer
efficiency by up to six percent. Future research combining
remotely-sensed subsidiary variables correlated with moisture
supply capacity estimates from soil survey methods may assess,
using relatively new spatially dependent interpolation methods,
the local and regional variation in
wheat grain yield.
Advisors/Committee Members: Bolton, Floyd E. (advisor).
Subjects/Keywords: Wheat
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APA (6th Edition):
Roberts, Michael C. (Michael Coy), 1. (1987). Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/40192
Chicago Manual of Style (16th Edition):
Roberts, Michael C. (Michael Coy), 1951-. “Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield.” 1987. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/40192.
MLA Handbook (7th Edition):
Roberts, Michael C. (Michael Coy), 1951-. “Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield.” 1987. Web. 21 Apr 2021.
Vancouver:
Roberts, Michael C. (Michael Coy) 1. Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield. [Internet] [Masters thesis]. Oregon State University; 1987. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/40192.
Council of Science Editors:
Roberts, Michael C. (Michael Coy) 1. Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield. [Masters Thesis]. Oregon State University; 1987. Available from: http://hdl.handle.net/1957/40192
Oregon State University
28.
Valverde, Bernal E.
Non-herbicidal effects of dinoseb on winter wheat yields.
Degree: MS, Crop Science, 1985, Oregon State University
URL: http://hdl.handle.net/1957/39962
► A series of experiments were conducted from 1983 to 1985 to determine the effects of dinoseb [2-(1-methylpropyl)-4,6-dinitrophenol] on winter wheat (Triticum aestivum L. em Thell)…
(more)
▼ A series of experiments were conducted from 1983 to 1985 to
determine the effects of dinoseb [2-(1-methylpropyl)-4,6-dinitrophenol]
on winter
wheat (Triticum aestivum L. em Thell) yields. Field trials
on dinoseb timing and dinoseb plus supplemental pesticides were
established in an effort to elucidate the possible factors involved in
the yield response of the crop to the herbicide, under weed-free
conditions. During the first year (1983-1984), dinoseb (1.7 kg/ha) was
applied at several growth stages, from 1 leaf to early booting, to
September- and October-planted Yamhill
wheat and late October-planted
Stephens
wheat. Higher yields were obtained in late-planted
wheat
because of reduced disease attack. The main diseases present during
this cropping season were: leaf blotch (Septoria tritici Rob. in
Desm.), stripe rust (Puccinia striiformis West.), eyespot foot rot
(Pseudocercosporella herpotrichoides (Fron) Dei.), and glume blotch
(Septoria nodorum (Berk.) Berk.). Early dinoseb applications increased
grain yields and prevented or lowered foliar disease attack. Late
applications (after the first node stage) decreased yields, probably
because of phytotoxicity. However, the general crop response to
application times was erratic. Experiments involving supplemental pesticides included, in addition to dinoseb, a) preplant fumigation with 50 g/m² methyl bromide (bromomethane), b) 2.25 kg/ha phorate {0,0-
diethyl S-[(ethylthio)methyl] phosphorodithioate} preplant
incorporated, c) 1.12 kg/ha benomyl {methyl 1-[(butylamino)carbonyl]-
1H-benzimidazol-2-ylcarbamate} applied in February, 1984, and d) repeat
applications of 0.12 kg/ha propiconazole {1-[2-(2,4-dichlorophenyl)4-
propyl-1,3-dioxolan-2-ylmethyl]-1-H-1,2,4-triazole} at flag leaf
emergence and at heading. Dinoseb increased grain yields and reduced
foliar disease infection. December-applied dinoseb plus propiconazole
gave the highest yields as a result of effective disease control.
Methyl bromide drastically reduced yield, regardless of dinoseb
application, because of lodging. Methyl bromide increased plant height
and tiller number, and decreased tiller weight. It also increased
eyespot attack. Benomyl was the only pesticide that reduced eyespot
incidence. Phorate did not affect any of the variables studied.
In the second year (1984-1985) experiments on dinoseb timing,
dinoseb decreased foliar disease infection (primarily leaf blotch) in
most cases, when applied to October-planted Stephens
wheat, and yield
increases were obtained with earlier applications as in the previous
year. Supplemental-fungicide experiments included a) benomyl, b)
propiconazole (single application when flag leaf was just visible), and
c) repeat applications of 1.12 kg/ha chlorothalonil (2,4,5,6-
tetrachloro-1,3-benzenedicarbonitrile) at 99% flag leaf emergence and
99% head emergence. Dinoseb application did not affect grain yield and
slightly reduced foliar disease, in the absence of fungicides. Benomyl
increased yield because of improved disease control.…
Advisors/Committee Members: Appleby, Arnold P. (advisor), Allen, Thomas (committee member).
Subjects/Keywords: Wheat
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APA (6th Edition):
Valverde, B. E. (1985). Non-herbicidal effects of dinoseb on winter wheat yields. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/39962
Chicago Manual of Style (16th Edition):
Valverde, Bernal E. “Non-herbicidal effects of dinoseb on winter wheat yields.” 1985. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/39962.
MLA Handbook (7th Edition):
Valverde, Bernal E. “Non-herbicidal effects of dinoseb on winter wheat yields.” 1985. Web. 21 Apr 2021.
Vancouver:
Valverde BE. Non-herbicidal effects of dinoseb on winter wheat yields. [Internet] [Masters thesis]. Oregon State University; 1985. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/39962.
Council of Science Editors:
Valverde BE. Non-herbicidal effects of dinoseb on winter wheat yields. [Masters Thesis]. Oregon State University; 1985. Available from: http://hdl.handle.net/1957/39962
Oregon State University
29.
Nandpuri, Karam Singh.
Inheritance of plant height, date of heading and tillering in three wheat crosses.
Degree: PhD, Farm Crops, 1958, Oregon State University
URL: http://hdl.handle.net/1957/50961
Subjects/Keywords: Wheat
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APA (6th Edition):
Nandpuri, K. S. (1958). Inheritance of plant height, date of heading and tillering in three wheat crosses. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/50961
Chicago Manual of Style (16th Edition):
Nandpuri, Karam Singh. “Inheritance of plant height, date of heading and tillering in three wheat crosses.” 1958. Doctoral Dissertation, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/50961.
MLA Handbook (7th Edition):
Nandpuri, Karam Singh. “Inheritance of plant height, date of heading and tillering in three wheat crosses.” 1958. Web. 21 Apr 2021.
Vancouver:
Nandpuri KS. Inheritance of plant height, date of heading and tillering in three wheat crosses. [Internet] [Doctoral dissertation]. Oregon State University; 1958. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/50961.
Council of Science Editors:
Nandpuri KS. Inheritance of plant height, date of heading and tillering in three wheat crosses. [Doctoral Dissertation]. Oregon State University; 1958. Available from: http://hdl.handle.net/1957/50961
Oregon State University
30.
Patterson, Lloyd Leonard.
Effects of various soaking and freezing treatments as factors in determining winter hardiness of selected wheat varieties.
Degree: MS, Farm Crops, 1956, Oregon State University
URL: http://hdl.handle.net/1957/51374
Subjects/Keywords: Wheat
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APA (6th Edition):
Patterson, L. L. (1956). Effects of various soaking and freezing treatments as factors in determining winter hardiness of selected wheat varieties. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/51374
Chicago Manual of Style (16th Edition):
Patterson, Lloyd Leonard. “Effects of various soaking and freezing treatments as factors in determining winter hardiness of selected wheat varieties.” 1956. Masters Thesis, Oregon State University. Accessed April 21, 2021.
http://hdl.handle.net/1957/51374.
MLA Handbook (7th Edition):
Patterson, Lloyd Leonard. “Effects of various soaking and freezing treatments as factors in determining winter hardiness of selected wheat varieties.” 1956. Web. 21 Apr 2021.
Vancouver:
Patterson LL. Effects of various soaking and freezing treatments as factors in determining winter hardiness of selected wheat varieties. [Internet] [Masters thesis]. Oregon State University; 1956. [cited 2021 Apr 21].
Available from: http://hdl.handle.net/1957/51374.
Council of Science Editors:
Patterson LL. Effects of various soaking and freezing treatments as factors in determining winter hardiness of selected wheat varieties. [Masters Thesis]. Oregon State University; 1956. Available from: http://hdl.handle.net/1957/51374
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