Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 33 for “"Wheat--Breeding"”.
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Phenomics enabled genetic dissection of complex traits in wheat breeding
… and crop growth rate of 1745 advanced spring wheat lines at multiple time-points over the course of three field seasons at three field sites in South Asia. High correlations of digital measures to visual estimates and superior broad-sense heritability demonstrate these approaches are amenable …
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BASIC STUDIES ON HYBRID WHEAT BREEDING UTILIZING AEGILOPS CRASSA CYTOPLASM
本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである
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Public, Producer, Private Partnerships and EPR systems in Australian Wheat Breeding
… Australian End Point Royalty (EPR) system for wheat and addresses four principal questions: (1) How was the Australian system created and how does it work? (2) How do public, producer and private ownership of breeding programs affect the pricing of varieties? (3) How do EPR rates affect wheat …
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Genetic control and prediction of milling and baking quality for UK wheat breeding
Bread wheat for human consumption makes a great contribution to health and nutrition of the growing global population, but competition for human digestible grains that are fed to livestock has concerning implications for sustainability and food security. Specific quality requirements must be met …
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Simultaneous Mapping and Pyramiding of Fusarium Head Blight Resistance Loci in Wheat Breeding Populations
… between QTL mapping and marker-assisted breeding efforts aimed at pyramiding QTL, since no direct bridge exists between the populations within which these activities are conducted. Through this body of research, we demonstrate the application of linkage analysis directly in wheat breeding …
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The Economic Benefits of the South African Agricultural Research Council’s Wheat Breeding Program: 1992–2015
… in South Africa is needed specifically in plant breeding to increase yields and help mitigate future food insecurity. To fill this need, the South African government funds the Agricultural Research Council (ARC), which conducts holistic research on wheat and other crops. Wheat is important to …
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An Evaluation of Unmanned Aircraft Systems' Ability to Assess Stripe Rust in Large Wheat Breeding Nursies
… foliar disease that significantly impacts global wheat production, and resistant cultivars provide the most efficient method of control. High-throughput phenotyping using unmanned aircraft systems (UAS) offers a potentially more efficient method for field-based phenotyping compared to visual …
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Validation, Saturation, and Marker-Assisted Selection of Quantitative Trait Loci Conferring Adult Plant Resistance to Powdery Mildew in an Elite Wheat Breeding Population
… is one of the most devastating diseases in wheat (<i>Triticum aestivum</i>) worldwide. Hypersensitive, race specific genes primarily have been deployed to control the disease, however recent efforts have shifted to breeding for more durable resistance, such as "adult plant resistance" (APR). …
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WAVELENGTH AND VISUAL FEATURE SELECTION FOR NON-DESTRUCTIVE EVALUATION OF FUSARIUM HEAD BLIGHT IN WHEAT USING HYPERSPECTRAL IMAGING
… economic losses in the Canadian prairie wheat industry. Although wheat breeding efforts to enhance resistance genes are ongoing, efficient and accurate detection of FHB remains critical for breeding programs and crop protection. This thesis presents the development of a custom …
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Farm saved seed (FSS) and royalty generation for wheat in France, United Kingdom, and Australia - policy implications for Canada
The majority of wheat research in the world and in Canada is conducted by the public sector. The government of Canada has introduced legislation to update its plant breeder’s rights (PBR) legislation, making Canada compliant with the International Union for the Protection of New Varieties of Plants …
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Development of new tools and germplasms for improvement of wheat resistance to Fusarium head blight
Wheat Fusarium head blight (FHB) is a devastating disease of wheat worldwide, which can significantly reduce grain yield and quality. Although the application of fungicides can reduce FHB damage, growing FHB resistant wheat is the most effective and eco-friendly approach to reduce the losses. To …
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Broadening the wheat gene pool for stem rust resistance through genomic-assisted introgressions from Aegilops tauschii
… to diseases and insect pests that attack bread wheat (Triticum aestivum L. (2n=6x=42, AABBDD). Wheat production is currently threatened by broadly virulent races of the ‘Ug99’ lineage of wheat stem rust caused by the fungus, Puccinia graminis f.sp. tritici Pers. & Eriks. Screening of a large set …
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Spinel: a framework for counting wheat spikes and kernels using UAV and ground-based imaging in breeding fields
Quantifying wheat spikes and kernels is crucial for evaluating the grain yield potential of diverse breeding lines. It enables breeders to measure grain yield and select superior breeding lines to improve crop productivity. Traditional methods for assessing these traits are labour-intensive, …
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The genetic control of stem mechanical properties in Brassica Napus and Wheat
… problem in both Brassica napus (B. napus) and wheat, and is a key contributor to yield loss. The development of genetic markers that could be used in the selection of elite accessions with high stem mechanical strength is an approach that could compliment current strategies in place for lodging …
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Agronomic, quality, and genetic analysis of the Rht18 semi-dwarfing gene in a Canadian Western Red Spring Wheat (Triticum aestivum L.) background
Semi-dwarf wheat has historically resulted in reduced stem lodging, increased harvest index, and in some areas, improved yields. The Rht18 gene is known to reduce height in wheat, but there are currently no commercial varieties in Western Canada that contain this gene. In Western Canada the two …
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The agronomic and molecular characterisation of Rht8 in hexaploid wheat
… The potential of Rht8 in northern-European wheat breeding remains unclear. In the present study, near-isogenic lines contrasting for the Rht8/tall allele in the UK-adapted and photoperiod-sensitive variety Paragon were evaluated in trials with varying nitrogen fertiliser (N) treatments and …
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Dissection of Soil Waterlogging Tolerance in Soft Red Winter Wheat using Genomic Approaches
… RNA-seq allow for faster selection of superior breeding lines and for identification and resolution of candidate genes. A panel of 240 soft red winter wheat (Triticum aestivum L.) cultivars and breeding lines were subjected to soil waterlogging stress over two seasons at Stuttgart, AR and St. …
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Navigating through the uncertainty of genotyping-by-sequencing data in polyploids
… for both recent and ancient allopolyploids (e.g. wheat, maize, soybean, Miscanthus), particularly where the reference genome contains highly similar paralogous sequences that do not pair at meiosis. Alignment of sequence tags to the appropriate position within highly duplicated reference genomes …
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High-Throughput Phenotyping and Genomic Prediction in Multi-Environment Plant Breeding Field Trials
Plant breeding requires phenotyping for multiple traits throughout the growing season in large, multilocation field trials. This large-scale phenotyping produces the data necessary to select lines with a desirable combination of traits. The use of unoccupied aerial vehicles (UAVs) equipped with …
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Physiological Traits and Quantitative Trait Loci Associated with Nitrogen Use Efficiency in Soft Red Winter Wheat
Development of winter wheat (Triticum aestivum L.) cultivars capable of more efficient uptake and utilization of applied nitrogen (N) has the potential to increase grower profitability and reduce negative environmental consequences associated with N lost from the plant-soil system. The first study …
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