subject:(wheat)

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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Liu, Jiang. “Identifying the Parameters for Wheat Pollen Electroporation Transformation.” 2016. Masters Thesis, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/59404.

MLA Handbook (7^th Edition):

Liu, Jiang. “Identifying the Parameters for Wheat Pollen Electroporation Transformation.” 2016. Web. 28 Mar 2020.

Vancouver:

Liu J. Identifying the Parameters for Wheat Pollen Electroporation Transformation. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2020 Mar 28]. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. 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 (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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: MS, Plant Sciences, 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. Advisors/Committee Members: Mergoum, Mohamed (advisor).

Subjects/Keywords: Wheat – Genetics.; Wheat – Composition.; Wheat – Yields.

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mantovani, E. E. (2011). Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm. (Masters Thesis). North Dakota State University. Retrieved from http://hdl.handle.net/10365/29911

Chicago Manual of Style (16^th Edition):

Mantovani, Eder Eduardo. “Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm.” 2011. Masters Thesis, North Dakota State University. Accessed March 28, 2020. http://hdl.handle.net/10365/29911.

MLA Handbook (7^th Edition):

Mantovani, Eder Eduardo. “Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm.” 2011. Web. 28 Mar 2020.

Vancouver:

Mantovani EE. Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm. [Internet] [Masters thesis]. North Dakota State University; 2011. [cited 2020 Mar 28]. Available from: http://hdl.handle.net/10365/29911.

Council of Science Editors:

Mantovani EE. Wheat Traits Variations, Associations, and Potential Improvement from Crosses of Elite X Non-Adapted Germplasm. [Masters Thesis]. North Dakota State University; 2011. Available from: http://hdl.handle.net/10365/29911

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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Fajardo Centeno, Carlos A. “Influence of Soft Wheat Characteristics on Quality of Batter-based Products.” 2016. Doctoral Dissertation, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/58774.

MLA Handbook (7^th Edition):

Fajardo Centeno, Carlos A. “Influence of Soft Wheat Characteristics on Quality of Batter-based Products.” 2016. Web. 28 Mar 2020.

Vancouver:

Fajardo Centeno CA. Influence of Soft Wheat Characteristics on Quality of Batter-based Products. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2020 Mar 28]. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/29776.

MLA Handbook (7^th Edition):

Sophonputtanaphoca, Supaporn. “Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing.” 2012. Web. 28 Mar 2020.

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 2020 Mar 28]. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/16255.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Mushekwa, Sakumona. “Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency.” 2012. Thesis, University of Zimbabwe. Accessed March 28, 2020. 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 (7^th Edition):

Mushekwa, Sakumona. “Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency.” 2012. Web. 28 Mar 2020.

Vancouver:

Mushekwa S. Evaluation of wheat(triticum aestivum l.)gentypes for nitrogen and water use efficiency. [Internet] [Thesis]. University of Zimbabwe; 2012. [cited 2020 Mar 28]. 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 Georgia

8. Samuel-Foo, Michelle Susan. Genetic analyses of Hessian fly resistance in KS 94U275.

Degree: MS, Agronomy, 2003, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/samuel-foo_michelle_s_200312_ms

► The need for enhanced genetic diversity in wheat (Triticum aestivum L.) for resistance against the Hessian fly (HF) [Mayetiola destructor Say] is a continuous one,… (more)

Subjects/Keywords: Wheat

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Samuel-Foo, M. S. (2003). Genetic analyses of Hessian fly resistance in KS 94U275. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/samuel-foo_michelle_s_200312_ms

Chicago Manual of Style (16^th Edition):

Samuel-Foo, Michelle Susan. “Genetic analyses of Hessian fly resistance in KS 94U275.” 2003. Masters Thesis, University of Georgia. Accessed March 28, 2020. http://purl.galileo.usg.edu/uga_etd/samuel-foo_michelle_s_200312_ms.

MLA Handbook (7^th Edition):

Samuel-Foo, Michelle Susan. “Genetic analyses of Hessian fly resistance in KS 94U275.” 2003. Web. 28 Mar 2020.

Vancouver:

Samuel-Foo MS. Genetic analyses of Hessian fly resistance in KS 94U275. [Internet] [Masters thesis]. University of Georgia; 2003. [cited 2020 Mar 28]. Available from: http://purl.galileo.usg.edu/uga_etd/samuel-foo_michelle_s_200312_ms.

Council of Science Editors:

Samuel-Foo MS. Genetic analyses of Hessian fly resistance in KS 94U275. [Masters Thesis]. University of Georgia; 2003. Available from: http://purl.galileo.usg.edu/uga_etd/samuel-foo_michelle_s_200312_ms

Texas A&M University

9. Shaffer, Oliver Jacob. Impact of planting date and seeding rate on grain and forage yields of wheat in Texas.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2417

► Wheat serves three very important roles to producers in Texas and many states in the Great Plains. First, wheat is used as a cool season… (more)

Subjects/Keywords: wheat; date

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Shaffer, O. J. (2009). Impact of planting date and seeding rate on grain and forage yields of wheat in Texas. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2417

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shaffer, Oliver Jacob. “Impact of planting date and seeding rate on grain and forage yields of wheat in Texas.” 2009. Thesis, Texas A&M University. Accessed March 28, 2020. http://hdl.handle.net/1969.1/ETD-TAMU-2417.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shaffer, Oliver Jacob. “Impact of planting date and seeding rate on grain and forage yields of wheat in Texas.” 2009. Web. 28 Mar 2020.

Vancouver:

Shaffer OJ. Impact of planting date and seeding rate on grain and forage yields of wheat in Texas. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2020 Mar 28]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2417.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shaffer OJ. Impact of planting date and seeding rate on grain and forage yields of wheat in Texas. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2417

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

10. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/46100.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

11. 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)

Subjects/Keywords: Wheat

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Shenk, Myron Daniel. “Some components of test weight of soft white wheat.” 1968. Masters Thesis, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/46943.

MLA Handbook (7^th Edition):

Shenk, Myron Daniel. “Some components of test weight of soft white wheat.” 1968. Web. 28 Mar 2020.

Vancouver:

Shenk MD. Some components of test weight of soft white wheat. [Internet] [Masters thesis]. Oregon State University; 1968. [cited 2020 Mar 28]. 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

12. 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)

Subjects/Keywords: Wheat

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Yu, Michelle Hui-ming. “Effect of wheat bran on fecal nutrients and bowel function in humans.” 1979. Masters Thesis, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/28159.

MLA Handbook (7^th Edition):

Yu, Michelle Hui-ming. “Effect of wheat bran on fecal nutrients and bowel function in humans.” 1979. Web. 28 Mar 2020.

Vancouver:

Yu MH. Effect of wheat bran on fecal nutrients and bowel function in humans. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2020 Mar 28]. 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

13. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/40844.

MLA Handbook (7^th Edition):

Caputo, John Anthony. “Effects of nitrogen applied on wheat straw on winter wheat (Triticum aestivum L.) yields in western Oregon.” 1985. Web. 28 Mar 2020.

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 2020 Mar 28]. 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

14. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/41249.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

15. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/41524.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

16. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Huber, Andrew Gail, 1944-. “Endosperm morphogenesis in wheat (Triticum aestivum L.).” 1983. Doctoral Dissertation, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/41530.

MLA Handbook (7^th Edition):

Huber, Andrew Gail, 1944-. “Endosperm morphogenesis in wheat (Triticum aestivum L.).” 1983. Web. 28 Mar 2020.

Vancouver:

Huber, Andrew Gail 1. Endosperm morphogenesis in wheat (Triticum aestivum L.). [Internet] [Doctoral dissertation]. Oregon State University; 1983. [cited 2020 Mar 28]. 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

17. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/41443.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

18. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/41839.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

19. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/41835.

MLA Handbook (7^th Edition):

Marciniak, Michael E. “Association of selected traits with visual selection for yield in wheat (Triticum aestivum, L. em Thell.).” 1983. Web. 28 Mar 2020.

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 2020 Mar 28]. 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

20. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/42039.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

21. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/42242.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

22. 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)

Subjects/Keywords: Wheat

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/42711.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

23. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/42417.

MLA Handbook (7^th Edition):

Ekse, Ali Osman. “Chemically induced male sterility and natural out-crossing in selected wheat cultivars (Triticum aestivum L. em Thell).” 1980. Web. 28 Mar 2020.

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 2020 Mar 28]. 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

24. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/42804.

MLA Handbook (7^th Edition):

Mansfield, Michael Andrews. “The effects of abscisic acid on protein synthesis in mature and immature embryos of wheat.” 1981. Web. 28 Mar 2020.

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 2020 Mar 28]. 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

25. 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)

Subjects/Keywords: Wheat

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/42588.

MLA Handbook (7^th 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. 28 Mar 2020.

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 2020 Mar 28]. 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

26. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Lee, Wha-gi. “Amylolytic enzymes in wheat seeds.” 1979. Masters Thesis, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/42746.

MLA Handbook (7^th Edition):

Lee, Wha-gi. “Amylolytic enzymes in wheat seeds.” 1979. Web. 28 Mar 2020.

Vancouver:

Lee W. Amylolytic enzymes in wheat seeds. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2020 Mar 28]. 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

27. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Gingrich, Gale Allen. “Effect of broadleaf weeds on winter wheat yields.” 1979. Masters Thesis, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/42841.

MLA Handbook (7^th Edition):

Gingrich, Gale Allen. “Effect of broadleaf weeds on winter wheat yields.” 1979. Web. 28 Mar 2020.

Vancouver:

Gingrich GA. Effect of broadleaf weeds on winter wheat yields. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2020 Mar 28]. 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

28. 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)

Subjects/Keywords: Wheat

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th 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 March 28, 2020. http://hdl.handle.net/1957/40192.

MLA Handbook (7^th Edition):

Roberts, Michael C. (Michael Coy), 1951-. “Remote-sensing and geographic information system techniques to map spatial variation of wheat grain yield.” 1987. Web. 28 Mar 2020.

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 2020 Mar 28]. 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

29. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Valverde, Bernal E. “Non-herbicidal effects of dinoseb on winter wheat yields.” 1985. Masters Thesis, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/39962.

MLA Handbook (7^th Edition):

Valverde, Bernal E. “Non-herbicidal effects of dinoseb on winter wheat yields.” 1985. Web. 28 Mar 2020.

Vancouver:

Valverde BE. Non-herbicidal effects of dinoseb on winter wheat yields. [Internet] [Masters thesis]. Oregon State University; 1985. [cited 2020 Mar 28]. 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

30. 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

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th 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 (16^th Edition):

Nandpuri, Karam Singh. “Inheritance of plant height, date of heading and tillering in three wheat crosses.” 1958. Doctoral Dissertation, Oregon State University. Accessed March 28, 2020. http://hdl.handle.net/1957/50961.

MLA Handbook (7^th Edition):

Nandpuri, Karam Singh. “Inheritance of plant height, date of heading and tillering in three wheat crosses.” 1958. Web. 28 Mar 2020.

Vancouver:

Nandpuri KS. Inheritance of plant height, date of heading and tillering in three wheat crosses. [Internet] [Doctoral dissertation]. Oregon State University; 1958. [cited 2020 Mar 28]. 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

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations