Molecular Mapping of Rust Resistant Qtls in a Synthetic Hexaploid Wheat Population PDF Download
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Author: Jeffrey David Kovach
Publisher:
ISBN: 9780355408058
Category : Electronic dissertations
Languages : en
Pages : 106
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Book Description
Author: Jeffrey David Kovach
Publisher:
ISBN: 9780355408058
Category : Electronic dissertations
Languages : en
Pages : 106
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Book Description
Author: Xianming Chen
Publisher: Springer
ISBN: 9402411119
Category : Science
Languages : en
Pages : 723
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Book Description
This book comprehensively introduces stripe rust disease, its development and its integral control. Covering the biology, genetics, genome, and functional genomics of the pathogen, it also discusses host and non-host resistance, their interactions and the epidemiology of the disease. It is intended for scientists, postgraduates and undergraduate studying stripe rust, plant pathology, crop breeding, crop protection and agricultural science, but is also a valuable reference book for consultants and administrators in agricultural businesses and education.
Author: Iago Zebediah Lowe
Publisher:
ISBN: 9781267029041
Category :
Languages : en
Pages :
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Book Description
The bane of wheat-based agricultural societies for millennia, the rust diseases continue to pose the single largest biotic threat to global wheat production despite more than a century of systematic scientific work on this important pathosystem. Recent breaches of numerous widely deployed sources of resistance have brought the wheat rusts once more to the center of global agricultural concerns and urge us to consider how, aided by new tools in molecular genetics and genomics, we may one day develop truly durable strategies of resistance to these sophisticated and evolving pathogens. Chapter 1 provides an historical overview of wheat rust resistance and argues that a new conceptual framework, one prioritizing the functional classification of quantitative resistance genes, is needed if the objective of developing deployable strategies of durable rust resistance is to be met. Chapter 2 details the identification and validation of stripe rust resistance QTL segregating in a hexaploid wheat mapping population. By focusing on sources of partial resistance, phenotyping under pressure from a broadly-virulent pathogen population in the field, characterizing the mapping population over multiple seasons, and validating the discovered QTL in independent populations, this study models the approach to rust resistance QTL identification and validation outlined in the first chapter. Chapter 3 presents the reasons for prioritizing continued investment in Yr48, a non-major resistance gene identified in the described mapping population. This discussion is followed by further phenotypic characterization of Yr48 and dissection of its validated QTL region, work which sets the stage for the construction of a physical map of the Yr48 region and the positional cloning of this novel source of resistance. The final section of this dissertation outlines the likely future research activities motivated by the results presented in the previous chapters. While it may be several years before Yr48 is cloned, this dissertation provides a solid justification and foundation for that work. And through its eventual identification and functional characterization, Yr48 promises to advance our understanding of the mechanisms of quantitative resistance to wheat stripe rust and thereby facilitate the long-term goal of engineering strategies of durable resistance to this historic agricultural pathogen.
Author: Jules Janick
Publisher: John Wiley & Sons
ISBN: 1118497953
Category : Science
Languages : en
Pages : 288
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Book Description
Plant Breeding Reviews presents state-of-the-art reviews on plant genetics and the breeding of all types of crops by both traditional means and molecular methods. Many of the crops widely grown today stem from a very narrow genetic base; understanding and preserving crop genetic resources is vital to the security of food systems worldwide. The emphasis of the series is on methodology, a fundamental understanding of crop genetics, and applications to major crops. It is a serial title that appears in the form of one or two volumes per year.
Author: Paul J. Kramer
Publisher:
ISBN:
Category :
Languages : en
Pages : 500
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Book Description
Author: Rudi Appels
Publisher: Sydney University Press
ISBN: 1920899103
Category : Science
Languages : en
Pages : 317
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Book Description
The papers herein are volume 3 of the proceedings of the 11th International Wheat Genetics Symposium, held in Brisbane, Australia, in 2008. The series presents the science of the genetic sciences applied to bread and durum wheats and other species.
Author: Jichun Tian
Publisher: Springer
ISBN: 9401773904
Category : Technology & Engineering
Languages : en
Pages : 550
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Book Description
The book mainly describes the QTL mappings and efficacy analyses that are associated with wheat productivity, quality, physiology and various stress resistances and provides summaries of results from studies conducted both at home and abroad. It presents comparable data and analyses, helping readers to arrive at a more comprehensive understanding of the latest development in this field. The book provides a wealth of novel information, broad range of applications and in-depth findings on crop genetics and molecular breeding, making it valuable not only for plant breeders but also for academic faculties, senior researchers and advanced graduate students who are involved in plant breeding and genetics. Dr. Jichun Tian is a professor at the Department of Agronomy, Shandong Agricultural University, Tai’an, China.
Author: Shitaye Homma Megerssa
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Stem rust caused by Puccinia graminis f. sp. tritici Eriks. & Henn is the most destructive disease of durum and common wheat. The main focus of this study is to identify loci associated with stem rust resistance in durum wheat using association mapping and linkage mapping. A panel of 283 lines and 224 recombinant inbred lines (RILs) from a cross between 'Reichenbachii' and 'DAKIYE' developed by the durum wheat breeding program of the International Maize and Wheat Improvement Center (CIMMYT) were used for the study. The panel was evaluated against races TTKSK, TKTTF, JRCQC and TTRTF at the seedling stage and TKTTF and JRCQC in the field in Ethiopia from 2018 to 2019 for two seasons. The same panel was evaluated against bulk of multiple stem rust races prevalent in Ethiopia and Kenya from 2018 to 2019 in five environments. Genome-wide association study (GWAS) was conducted using 26,439 single nucleotide polymorphism (SNP) markers for seedling response (280 lines) and field response (283 lines) to stem rust. The RILs along with the two parents were evaluated for response to bulk of multiple stem rust races in Ethiopia and Kenya for two seasons from 2019 to 2020. Linkage analyses were conducted using 843 SNP markers for 175 lines. For GWAS of seedling response, a mixed linear model (MLM) identified 17 quantitative trait loci (QTL) of which eight were putatively novel while FarmCPU identified 20 QTL and 12 were likely novel. For field resistance to races TKTTF and JRCQC, MLM detected 19 QTL of which 12 were likely novel while FarmCPU detected 16 QTL and seven were putatively novel. For resistance to multiple Pgt races in East Africa, 160 significant marker-trait associations (MTAs) grouped into 42 QTL were identified using MLM and FarmCPU and 21 QTL were likely novel. From previously reported Sr genes, the regions of Sr7a, Sr8a, Sr8155B1, Sr11, Sr12, alleles of Sr13, Sr17, Sr22/Sr25, and Sr49 were identified. For the biparental population, composite interval mapping (CIM) identified three QTL on chromosomes 3B (QSr.cnl-3B), 4B (QSr.cnl-4B) and 7B (QSr.cnl-7B). These three QTL contributed by the resistant parent explained 4.7% to 15.3% of the phenotypic variation and all match previously reported loci. Lines with multiple-race stem rust resistance can be used as parents in durum wheat resistance breeding to stem rust and markers identified in the GWAS can be used in marker-assisted selection (MAS) once validated in a different population. Further study on the validation of allele specific markers and allelism tests in the Sr13 region of chromosome 6A is needed. Future evaluation of large numbers of durum wheat lines and searching for durable adult plant resistance gene is crucial in resistance breeding of durum wheat.
Author: Peter Shewry
Publisher: Frontiers Media SA
ISBN: 2889639797
Category : Nature
Languages : en
Pages : 217
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Book Description
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.
Author: James Clare Nelson
Publisher:
ISBN:
Category :
Languages : en
Pages : 330
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Book Description
