Download or read book An Evaluation of Drought Tolerance Traits in Hard Red Spring Wheat Triticum Aestivum L Genotypes written by Luis M. Viega and published by . This book was released on 1983 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Improving Drought Tolerance in Wheat with Physiological and Molecular Tools written by Surya Laxmi Shrestha and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Drought is a limiting factor for wheat (Triticum aestivum L.) production in the low precipitation regions of the Pacific Northwest (PNW). To improve wheat performance in drought, this study focused on three main objectives. Our first objective was to determine water use efficiency (WUE) in the PNW wheat lines through carbon isotope discrimination (CID) technique. Genotypic variation of CID was found in soft spring and hard winter wheat lines. Low CID or high WUE was found important for increasing yield of soft spring wheat lines in drought and semi-drought environments but not in other wheat types. The second objective of this study was to determine important physiological traits associated with yield. Fifteen spring wheat, 140 Alpowa/Express (AE) recombinant inbred lines (RILs) and 165 Hollis/Drysdale (HD) RILs, were evaluated in replicated field trials in two moisture environments, rainfed and irrigated, in different years. The wheat materials were screened for physiological (CT, CID, FLS: Flag leaf senescence), agronomic and phenological traits. The low canopy temperature (CT) was consistently associated with high yield in all wheat lines. The study found that CT was the main driver of wheat adaptation in drought in studied environmental conditions. Our third objective was to identify genomic regions associated with the studied traits through quantitative trait loci (QTL) mapping. In the AE population, yield and test weight QTL were identified on chromosome 1B in the irrigated environments but none of the QTL for physiological traits was found in this chromosomal region. The major QTL associated with yield and CT (at milking), which explained 15 and 22% of the phenotypic variation, were found on chromosome 3B in terminal drought environment. In the HD population, two QTL associated with yield were identified on chromosomes 2A and 4A in averaged rainfed environments in which yield QTL on chromosome 4A explained 35% of the phenotypic variation. These QTL for yield were associated with later FLS. Through the genetic dissection of yield into component traits, this study may help to incorporate quantitative traits into wheat drought breeding programs through marker-assisted selection.

Download or read book Wheat Blast written by Sudheer Kumar and published by CRC Press. This book was released on 2020-04-09 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat Blast provides systematic and practical information on wheat blast pathology, summarises research progress and discusses future perspectives based on current understanding of the existing issues. The book explores advance technologies that may help in deciding the path for future research and development for better strategies and techniques to manage the wheat blast disease. It equips readers with basic and applied understanding on the identification of disease, its distribution and chances of further spread in new areas, its potential to cause yield losses to wheat, the conditions that favour disease development, disease prediction modelling, resistance breeding methods and management strategies against wheat blast. Features: Provides comprehensive information on wheat blast pathogen and its management under a single umbrella Covers disease identification and diagnostics which will be helpful to check introduction in new areas Discusses methods and protocol to study the different aspects of the disease such as diagnostics, variability, resistance screening, epiphytotic creation etc. Gives deep insight on the past, present and future outlook of wheat blast research progress This book’s chapters are contributed by experts and pioneers in their respective fields and it provides comprehensive insight with updated findings on wheat blast research. It serves as a valuable reference for researchers, policy makers, students, teachers, farmers, seed growers, traders, and other stakeholders dealing with wheat.

Download or read book The Effects of Drought and High Temperature Stress on Reproduction Physiology and Yield of Spring and Winter Wheat written by Kyle J. Shroyer and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Drought and high temperature are major detriments to global wheat production. Wheat varies in its susceptibility to drought and high temperature stress. Three experiments were performed to address the challenges of drought and high temperature stress in wheat. The first experiment consisted of 256 genotypes of spring wheat and 301 genotypes of winter wheat, field screened for yield traits related to drought tolerance, in irrigated and dryland experiments. The experimental designs for the first experiment were both augmented incomplete block designs with one-way or row-column blocking. This experiment was performed at the Ashland Bottom Research Farm, south of Manhattan, KS, between 2011-2013. From this experiment, three conclusions were made: wheat genotypes vary widely in their responses between dryland and irrigated treatments and this variation can be used in future experiments or breeding tolerant genotypes. The number of seeds per unit of area, total biomass per unit area, and the average weight of one thousand seeds, were the best yield traits for predicting yield in both irrigated and dryland environments. Twenty genotypes were selected for future research based on their susceptibility or tolerance to drought. The second experiment was performed in the greenhouse facilities to observe the source-sink relationship of spring wheat genotype Seri 82 under drought and defoliation. The experiment was a randomized complete block design with a split-plot treatment arrangement. Post-anthesis cessation of watering and defoliation were the treatments. Both water stress and defoliation affected seed yield and total biomass. The major effect of post-anthesis water stress was a decrease in single seed weight. Defoliation affected the source-sink relationship by reducing the source strength of the leaves. This caused the stem to contribute more to overall yield. The defoliation also caused the remaining leaves to compensate for the removed leaves. The final experiment evaluated the changes in seed-filling rate and duration of three winter wheat genotypes during high temperature stress. High temperature stress reduced the duration of seed fill and increased the rate, differently in each genotype. Higher yields in the winter wheat growing regions, susceptible to post-anthesis high temperature stress, may be possible through selection of cultivars with faster seed-filling rates and/or duration of seed filling.

Download or read book Regional Wheat Workshop for Eastern Central and Southern Africa 12 Nakuru Kenya 22 26 Nov 2004 Proceedings written by and published by CIMMYT. This book was released on with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masters Abstracts written by and published by . This book was released on 1984 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of Drought Tolerance of Hard Red Winter Wheat Triticum Aestivum L Cultivars in Nebraska written by Sumardi Bin Haji Abdul Hamid and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book QTL Analysis of Drought Tolerance in Spring Wheat Triticum Aestivum L written by Seifeldin Elrayah Ibrahim Mohamed and published by . This book was released on 2007 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Selection Regimes for Improving Drought Tolerance in Spring Wheat written by Francis M. Kirigwi and published by . This book was released on 2001 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Drought Induced Photooxidative Stress and the Role of Antioxidative Defence Systems in Drought Tolerance of Wheat Genotypes written by Herbert H. Müller and published by . This book was released on 1998 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Symposium on Wheat Yield Potential written by Reynolds, M.P. and published by CIMMYT. This book was released on 2008 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Tolerance to Post anthesis Drought Stress in Spring Wheat written by Philip Lyle Bruckner and published by . This book was released on 1985 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aegilops Promising Genesources to Improve Agronomical and Quality Traits of Wheat written by Peter Shewry and published by Frontiers Media SA. This book was released on 2020-09-02 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

Download or read book Developing Sustainable and Health Promoting Cereals and Pseudocereals written by Marianna Rakszegi and published by Elsevier. This book was released on 2023-03-27 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developing Sustainable and Health Promoting Cereals and Pseudocereals: Conventional and Molecular Breeding reviews the most recent developments in the fields of cereal and pseudocereal breeding, with particular emphasis on the latest biotechnological techniques likely to lead to breakthrough changes in plant breeding. The book provides comprehensive information on the use of genetic resources or pre-breeding activities to improve health-related properties of cereals and pseudocereals. The text also explores targeted field-management practices and the latest in biotechnological methodologies, and offers a cohesive overview necessary for understanding the potential impacts and benefits of improved production of cereals and pseudocereals with high-nutritional value. Includes coverage of cereals and pseudocereals in a single comprehensive volume Focuses on sustainable circular economy, including assurance of food safety, quality, and health benefits Examines breeding to attain robust cereal and pseudocereals with higher nutritional value and adapted to specific regions, climate change, and global warming

Download or read book Genetics and Molecular Breeding in Cereal Crops written by Hongwei Wang and published by Frontiers Media SA. This book was released on 2023-11-09 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cereal leaf blights volume II written by Kostya Kanyuka and published by Frontiers Media SA. This book was released on 2023-07-31 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agronomy News written by and published by . This book was released on 1989 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.