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Genetics And Quantitative Trait Loci Mapping Of Septoria Tritici Blotch Resistance Agronomic And Quality Traits In Wheat
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Book Synopsis Genetics and quantitative trait loci mapping of septoria tritici blotch resistance, agronomic, and quality traits in wheat by : Vibin Eranezhath Harilal
Download or read book Genetics and quantitative trait loci mapping of septoria tritici blotch resistance, agronomic, and quality traits in wheat written by Vibin Eranezhath Harilal and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantitative Trait Loci Mapping of Rust Resistance and Agronomic Traits in the Doubled Haploid Spring Wheat Population 'HYAYT12-10' × 'GP146' by : Izabela L. Ciechanowska
Download or read book Quantitative Trait Loci Mapping of Rust Resistance and Agronomic Traits in the Doubled Haploid Spring Wheat Population 'HYAYT12-10' × 'GP146' written by Izabela L. Ciechanowska and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marker-assisted selection requires the identification of molecular markers associated with major genes and quantitative trait loci (QTL) using linkage analysis. In this study, we used 167 doubled haploid (DH) lines derived from two unregistered spring wheat (Triticum aestivum L.) parental lines that belong to the Canada Western Special Purpose (CWSP) class to map QTLs associated with five traits using inclusive composite interval mapping (ICIM). Using ICIM, least square means phenotype data across 3-4 environments, and a genetic map of 2,676 SNPs out of the wheat 90K SNP array, we identified ten QTLs associated with maturity (4A and 5B), plant lodging (4B, 5A, 5D, and 7D), grain yield (2D), leaf rust (4A) and stem rust (1A and 2B). Each QTL individually accounted for 6.0-22.3% of the phenotypic variance and together accounted for 8.6-38.2% of each trait. QTLs identified for rusts using ICIM had a minor effect (6.0-9.0%) or a major effect (22.3%). Our major effect QTL at 22.3% was discovered on chromosome 2B and contributed to stem rust response. Its physical location has been associated with disease response in previous studies. Results from this study provide additional valuable information to wheat researchers, in particular that the area on chromosome 2B should be considered for future analyses.
Book Synopsis Quantitative Trait Locus Mapping of Agronomic, Physiological, and End-use Quality Traits of Common Wheat (T. Aestivum) by : Junli Zhang (Doctoral student)
Download or read book Quantitative Trait Locus Mapping of Agronomic, Physiological, and End-use Quality Traits of Common Wheat (T. Aestivum) written by Junli Zhang (Doctoral student) and published by . This book was released on 2013 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain yield (GY) is always the first priority in wheat (Triticum aestivum L.) breeding; however, progress in improvement of this trait is hampered due to quantitative inheritance, low heritability, and confounding environmental effects. Thanks to the advancements of high throughput genotyping and phenotyping technologies, both molecular markers and physiological traits are now promising indirect selection tools in breeding for this trait and other traits. Besides grain yield, grain quality is another important respect in wheat breeding, and one of the quality traits is the Hagberg falling number (FN), which is commonly used in grain grading. The FN test has a genetic component but is also strongly influenced by environmental conditions during the reproductive growth stage, including excessive moisture, extreme temperature, and biotic and abiotic stresses. The objective of the current studies was to identify potential genomic regions and molecular markers that influence GY, three important physiological traits (canopy temperature, CT; chlorophyll content index, CCI; flag leaf senescence, FLS) that could impact grain yield during heat and moisture stress, and FN by QTL mapping approaches. A winter wheat population of 159 recombinant inbred lines (RILs) from the cross of ID0444 and Rio Blanco were used to map QTL for GY, CT, CCI and FLS, and a total of 110 hard white spring (HWS) wheat accessions from the National Small Grain Collection (NSGC) were used in genome-wide association mapping of FN. GY was evaluated under three field conditions, rainfed, terminal drought (water stress applied after anthesis), and fully irrigated, with a total of six location-year environments. QTL mapping was conducted for main effect (G) of GY, and the genotype x environment interaction (GEI) effect of GY. A total of 17 QTL were associated with G and 13 QTL associated with GEI, and nine of 13 QTL for GEI were mapped in the flanking chromosomal regions of QTL for GEI. One QTL, Q.Gy.ui-1B.2 found on chromosome 1B, was associated with GY in all six individual environments. Significant QTL x environment interaction (QEI), QTL x QTL interaction (QQI) and QTL x QTL x environment (QQEI) were also identified. The present study showed that the QEI and QQI were as important as the QTL main effect of GY, and they should be taken into consideration in future QTL studies and marker-assisted selection (MAS). The three physiological traits, CT, CCI and FLS, which have been reported to be closely related to grain yield of wheat in diverse environments, were evaluated in two terminal drought and one rainfed environments in southeastern Idaho. Correlation results showed that CT and FLS were highly correlated with GY but the relationship between CCI and GY varied among the three environments. FLS was closely related to heading date (HD) and its effect on grain yield might be determined by HD in the RIL population used in the study. Stepwise multiple regression showed that CT and FLS could predict grain yield effectively and could be used as indirect selection criteria in wheat breeding. A total of 27 main effect QTL (M-QTL) were identified on 12 chromosomes, explaining 5 to 14% of phenotypic variation. Seven epistatic QTL (E-QTL) were identified for FLS and CCI and these could explain 9-25% of the phenotypic variation, but most of them did not have a main effect. Most of the QTL were reported for the first time. FN tests were conducted using grain flour samples from the 110 HWS wheat accessions grown in five environments. A total of 1,740 SNP markers were used to detect SNP-FN associations using both general linear model (GLM) and mixed linear model (MLM). A total of 13 QTL located in nine chromosomal regions were identified in both GLM and MLM approaches. These new QTL have the potential to increase the selection efficiency for wheat breeding, and can be further explored to identify candidate genes.
Book Synopsis Mapping of quantitative-trait loci (QTL) for adult-plant resistance to Septoria tritici in five wheat populations (Triticum aestivum L.) by : Peter Risser
Download or read book Mapping of quantitative-trait loci (QTL) for adult-plant resistance to Septoria tritici in five wheat populations (Triticum aestivum L.) written by Peter Risser and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantitative Trait Loci for Agronomic and Quality Traits in Two Advanced Backcross Populations of Winter Wheat by : Antje Kunert
Download or read book Quantitative Trait Loci for Agronomic and Quality Traits in Two Advanced Backcross Populations of Winter Wheat written by Antje Kunert and published by . This book was released on 2007 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Septoria Diseases of Wheat by : Z. Eyal
Download or read book The Septoria Diseases of Wheat written by Z. Eyal and published by CIMMYT. This book was released on 1987 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Harnessing Genebanks: High-Throughput Phenotyping and Genotyping of Crop Wild Relatives and Landraces by : Andrés J. Cortés
Download or read book Harnessing Genebanks: High-Throughput Phenotyping and Genotyping of Crop Wild Relatives and Landraces written by Andrés J. Cortés and published by Frontiers Media SA. This book was released on 2023-04-06 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mapping Quantitative Trait Loci for Agronomic and Quality Factors in Wheat by :
Download or read book Mapping Quantitative Trait Loci for Agronomic and Quality Factors in Wheat written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Origin and Geography of Cultivated Plants by : N. I. Vavilov
Download or read book Origin and Geography of Cultivated Plants written by N. I. Vavilov and published by Cambridge University Press. This book was released on 1992-10-22 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of all of Vavgilov's works on the origin and geography of cultivated plant species.
Book Synopsis Genetic Mapping of Quantitative Trait Loci for Slow-rusting Traits in Wheat by : Yue Lu
Download or read book Genetic Mapping of Quantitative Trait Loci for Slow-rusting Traits in Wheat written by Yue Lu and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat leaf rust, caused by Puccinia triticina, is an important fungal disease worldwide. Growing resistant cultivars is an effective practice to reduce the losses caused by the disease, and using slow-rusting resistance genes can improve the durability of rust resistance in the cultivars. CI13227 is a winter wheat line that shows a high level of slow-rusting resistance to leaf rust and has been studied extensively. In this research, two recombinant inbreed line (RIL) populations derived from CI13227 x Suwon (104 RILs) and CI13227 x Everest (184 RILs) and one doubled haploid (DH) population derived from CI13227 x Lakin with 181 lines were used to identify quantitative trait loci (QTLs) for slow leaf rusting resistance. Each population and its parents were evaluated for slow-rusting traits in two greenhouse experiments. A selected set of 384 simple sequence repeat markers (SSRs), single nucleotide polymorphism markers (SNPs) derived from genotyping-by-sequencing (GBS-SNPs) or 90K-SNP chip (90K-SNPs) were analyzed in the three populations. Six QTLs for slow-rusting resistance, QLr.hwwgru-2DS, QLr.hwwgru-7BL, QLr.hwwgru-7AL, QLr.hwwgru-3B_1, QLr.hwwgru-3B_2, and QLr.hwwgru-1D were detected in the three populations with three stable QTLs, QLr.hwwgru-2DS, QLr.hwwgru-7BL and QLr.hwwgru-7AL. These were detected and validated by Kompetitive Allele-Specific PCR (KASP) markers converted from GBS-SNPs and 90K-SNPs in at least two populations. Another three QTLs were detected only in a single population, and either showed a minor effect or came from the susceptible parents. The KASP markers tightly linked to QLr.hwwgru-2DS (IWB34642, IWB8545 and GBS_snpj2228), QLr.hwwgru-7BL (GBS_snp1637 and IWB24039) and QLr.hwwgru-7AL (IWB73053 and IWB42182) are ready to be used in marker-assisted selection (MAS) to transfer these QTLs into wheat varieties to improve slow-rusting resistance in wheat.
Book Synopsis Identification of Quantitative Trait Loci and Molecular Markers for Disease, Insent and Agronomic Traits in Spring Wheat (Triticum Aestivum L.) by : Arron Hyrum Carter
Download or read book Identification of Quantitative Trait Loci and Molecular Markers for Disease, Insent and Agronomic Traits in Spring Wheat (Triticum Aestivum L.) written by Arron Hyrum Carter and published by . This book was released on 2009 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The World Wheat Book by : Alain P. Bonjean
Download or read book The World Wheat Book written by Alain P. Bonjean and published by Intercept Limited. This book was released on 2001-01 with total page 1131 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is a comprehensive history of wheat across all its main areas of production. New techniques such as in vitro culture now enable the development of a greater level of understanding of the genetics of wheat.
Book Synopsis Genetic Linkage Map Construction and Identification of Quantitative Trait Loci (QTLs) Determining Post-anthesis Drought Tolerance and Other Agronomic Traits in Bread Wheat by : Khalil Zaynali Nezhad
Download or read book Genetic Linkage Map Construction and Identification of Quantitative Trait Loci (QTLs) Determining Post-anthesis Drought Tolerance and Other Agronomic Traits in Bread Wheat written by Khalil Zaynali Nezhad and published by . This book was released on 2010 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two bread wheat (T. aestivum L.) accessions were selected as parental lines. Population genotyping was conducted on 143 F2 plants and phenotyping was carried out on 133 F2:3 families. The molecular genetic linkage map was constructed including 293 loci associated to 19 wheat chromosomes. There are 76 new loci compared to the ITMI map. The analysis revealed eight QTLs for days to flowering and seven QTLs for plant height. Five QTLs for spike length were identified. The QTL for seed length on chromosome 5B was mapped for all trait measurements under both conditions. The present study revealed four and six QTLs for thousand-grain weight under control and stress conditions, respectively. Only one QTL on chromosome 4BL was common for both conditions. Five QTLs for thousand-grain weight were found to be specific to stress condition on chromosomes 1B, 4AL, 7AS, and 7DS. Identifying QTLs for thousand-grain weight under post-anthesis drought stress on chromosomes 7DS, 7AS, and 4AL and considering the known reciprocal translocation of 4AL/7BS in wheat, revealed the importance of the chromosomes from the homoeologous group 7 of Triticeae.
Book Synopsis Inheritance of Resistance to Septoria Tritici Blotch in the Winter Wheat Doubled Haploid Population Solitär X Mazurka by :
Download or read book Inheritance of Resistance to Septoria Tritici Blotch in the Winter Wheat Doubled Haploid Population Solitär X Mazurka written by and published by . This book was released on 2013 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a doubled haploid population of the two winter wheat cultivars Solitär (resistant) and Mazurka (susceptible) inheritance of Septoria tritici blotch (STB) resistance was analyzed. In the seedling stage isolate-specific quantitative trait loci (QTL) were mapped on chromosomes 3A, 1B, 4A, 3B, 3D und 6B. QTL specific for necrotization of leaf area and pycnidia production were localized on chromosomes 1A, 4B and 3B, 6B, respectively. Under natural infection in the field plant height correlated negative with disease severity. With plant height as co-variable five QTL specific for resistance were identified on chromosomes 5A, 6D and 7D. Although, the contributions of QTL x QTL interactions to the total variance were generally low a complex inheritance of STB resistance can be assumed. None of the isolate-specific QTL detected in the seedling stage were verified in the field trials under natural infection.
Book Synopsis Physiological, Molecular, and Genetic Perspectives of Wheat Improvement by : Shabir H Wani
Download or read book Physiological, Molecular, and Genetic Perspectives of Wheat Improvement written by Shabir H Wani and published by Springer Nature. This book was released on 2020-12-17 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: World population is growing at an alarming rate and may exceed 9.7 billion by 2050, whereas agricultural productivity has been negatively affected due to yield limiting factors such as biotic and abiotic stresses as a result of global climate change. Wheat is a staple crop for ~20% of the world population and its yield needs be augmented correspondingly in order to satisfy the demands of our increasing world population. “Green revolution”, the introduction of semi-dwarf, high yielding wheat varieties along with improved agronomic management practices, gave rise to a substantial increase in wheat production and self-sufficiency in developing countries that include Mexico, India and other south Asian countries. Since the late 1980’s, however, wheat yield is at a standoff with little fluctuation. The current trend is thus insufficient to meet the demands of an increasing world population. Therefore, while conventional breeding has had a great impact on wheat yield, with climate change becoming a reality, newer molecular breeding and management tools are needed to meet the goal of improving wheat yield for the future. With the advance in our understanding of the wheat genome and more importantly, the role of environmental interactions on productivity, the idea of genomic selection has been proposed to select for multi-genic quantitative traits early in the breeding cycle. Accordingly genomic selection may remodel wheat breeding with gain that is predicted to be 3 to 5 times that of crossbreeding. Phenomics (high-throughput phenotyping) is another fairly recent advancement using contemporary sensors for wheat germplasm screening and as a selection tool. Lastly, CRISPR/Cas9 ribonucleoprotein mediated genome editing technology has been successfully utilized for efficient and specific genome editing of hexaploid bread wheat. In summary, there has been exciting progresses in the development of non-GM wheat plants resistant to biotic and abiotic stress and/or wheat with improved nutritional quality. We believe it is important to highlight these novel research accomplishments for a broader audience, with the hope that our readers will ultimately adopt these powerful technologies for crops improvement in order to meet the demands of an expanding world population.
Book Synopsis Proceedings of FSTP3 Congress - A Sustainable Durum Wheat Chain for Food Security and Healthy Lives by : Brian L. Beres
Download or read book Proceedings of FSTP3 Congress - A Sustainable Durum Wheat Chain for Food Security and Healthy Lives written by Brian L. Beres and published by Frontiers Media SA. This book was released on 2021-06-04 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Identification and Mapping of Genes Controlling Several Traits of Wheat Using Restriction Fragment Length Polymorphism (RFLP) Markers by : Zhengqiang Ma
Download or read book Identification and Mapping of Genes Controlling Several Traits of Wheat Using Restriction Fragment Length Polymorphism (RFLP) Markers written by Zhengqiang Ma and published by . This book was released on 1994 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
