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Author: Schuyler Smith
Publisher:
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Languages : en
Pages :
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Book Description
The Texas maize breeding program at Texas A&M University has been unique among breeding programs for the incorporation of a wealth of germplasm from a wide range of origins into inbred lines. The Texas program, situated in a subtropical environment, has found beneficial traits beyond what is seen in the temperate material commonly used in the far more productive Midwestern region of the United States from maize of tropical origin. To date, no molecular studies had been conducted to make any quantitative differentiations between the genetic diversity in the germplasm developed in the Texas program or compared to the germplasm commonly used in breeding programs from the Midwest. In this study a molecular characterization of genetic diversity was performed. A unique set of 266 lines were selected and genotyped using 766 single nucleotide polymorphism markers and was combined with data published in a similar study focusing on ex-PVP lines released by private companies. The two data sets combined to have 380 genotypes with 635 markers. It was determined from the results of the genotyping that there were five subpopulations of material as determined by population structure. A principal coordinate analysis showed only 18% of the variation could be explained by the first two principal components. This suggested that the array markers, designed to cluster the Midwestern heterotic groups did not discriminate this exotic material well and/or that the heterotic pools were not well supported. We conclude that the Texas program material shows dissimilar genetic results when compared to Midwest temperate material and has the ability to act as a source of unique genetics for other maize breeding program. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155199
Author: Schuyler Smith
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
The Texas maize breeding program at Texas A&M University has been unique among breeding programs for the incorporation of a wealth of germplasm from a wide range of origins into inbred lines. The Texas program, situated in a subtropical environment, has found beneficial traits beyond what is seen in the temperate material commonly used in the far more productive Midwestern region of the United States from maize of tropical origin. To date, no molecular studies had been conducted to make any quantitative differentiations between the genetic diversity in the germplasm developed in the Texas program or compared to the germplasm commonly used in breeding programs from the Midwest. In this study a molecular characterization of genetic diversity was performed. A unique set of 266 lines were selected and genotyped using 766 single nucleotide polymorphism markers and was combined with data published in a similar study focusing on ex-PVP lines released by private companies. The two data sets combined to have 380 genotypes with 635 markers. It was determined from the results of the genotyping that there were five subpopulations of material as determined by population structure. A principal coordinate analysis showed only 18% of the variation could be explained by the first two principal components. This suggested that the array markers, designed to cluster the Midwestern heterotic groups did not discriminate this exotic material well and/or that the heterotic pools were not well supported. We conclude that the Texas program material shows dissimilar genetic results when compared to Midwest temperate material and has the ability to act as a source of unique genetics for other maize breeding program. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155199
Author: Ramakrishna Wusirika
Publisher: CRC Press
ISBN: 1482228130
Category : Science
Languages : en
Pages : 310
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Book Description
Sequencing of the maize genome has opened up new opportunities in maize breeding, genetics and genomics research. This book highlights modern trends in development of hybrids, analysis of genetic diversity, molecular breeding, comparative and functional genomics, epigenomicsand proteomics in maize. The use of maize in biofuels, phytoremediation and
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Category : Gene mapping
Languages : en
Pages : 254
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Author: Hongwei Wang
Publisher: Frontiers Media SA
ISBN: 2832538606
Category : Science
Languages : en
Pages : 400
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Author: German Spangenberg
Publisher: Springer Science & Business Media
ISBN: 9401597006
Category : Science
Languages : en
Pages : 345
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Book Description
Forage plant breeding has entered the genome era. This timely book reviews the latest advances in the development and application of molecular technologies which supplement conventional breeding efforts for our major forage crops. It describes the plethora of new technologies and tools now available for high-throughput gene discovery, genome-wide gene expression analysis, production of transgenic plants, genome analysis and marker-assisted selection as applied to forage plants. Detailed accounts are presented of current and future opportunities for innovative applications of these molecular tools and technologies in the identification, functional characterisation, and use of valuable genes in forage production systems and beyond. This book represents a valuable resource for plant breeders, geneticists, and molecular biologists, and will be of particular relevance to advanced undergraduates, postgraduates, and researchers with an interest in forage legumes and grasses.
Author: C. G. Karajagi
Publisher:
ISBN:
Category :
Languages : en
Pages : 73
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Author: Andrew Hopkins
Publisher: Springer Science & Business Media
ISBN: 1402025912
Category : Technology & Engineering
Languages : en
Pages : 399
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Book Description
Forage and turf are the backbone of sustainable agriculture and contribute extensively to the world economy. The fast-paced advancement of cellular and molecular biology provides novel methods to accelerate or complement conventional breeding efforts. This book contains the most comprehensive reviews on the latest development in applications of molecular techniques for the improvement of forage grasses, forage legumes and turf grasses. Detailed accounts and future opportunities in molecular breeding of forage and turf, from gene discovery to development of improved cultivars, are described in the book. Almost all relevant areas are explored in detail, including tolerance to biotic and abiotic stresses; flowering control; plant-symbiont relations; breeding for animal, human and environmental welfare; molecular markers; transgenics; bioinformatics; population genetics; genomics of the model legume M. truncatula; field testing and risk assessment as well as intellectual property rights. This book will be of interest to researchers in both academia and industry who are involved in forage and turf improvement. It will be especially important to breeders, molecular biologists, geneticists, physiologists and agronomists.
Author: Jean-Sébastien Reynard
Publisher:
ISBN:
Category :
Languages : fr
Pages : 72
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Author: Yunbi Xu
Publisher: CABI
ISBN: 1845933923
Category : Science
Languages : en
Pages : 754
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Book Description
Recent advances in plant genomics and molecular biology have revolutionized our understanding of plant genetics, providing new opportunities for more efficient and controllable plant breeding. Successful techniques require a solid understanding of the underlying molecular biology as well as experience in applied plant breeding. Bridging the gap between developments in biotechnology and its applications in plant improvement, Molecular Plant Breeding provides an integrative overview of issues from basic theories to their applications to crop improvement including molecular marker technology, gene mapping, genetic transformation, quantitative genetics, and breeding methodology.
Author: Alan G. Smith
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 184
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