Download or read book Estimation of the Genetic Structure of an Elite Soybean Population and Its Application to a Soybean Breeding Program written by Clay Hurd Sneller and published by . This book was released on 1991 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Breeding written by Felipe Lopes da Silva and published by Springer. This book was released on 2017-06-10 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was written by soybean experts to cluster in a single publication the most relevant and modern topics in soybean breeding. It is geared mainly to students and soybean breeders around the world. It is unique since it presents the challenges and opportunities faced by soybean breeders outside the temperate world.
Download or read book Genomic Selection for Yield and Seed Composition Stability in an Applied Soybean Breeding Program written by Benjamin Mark Harms and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stability traits are of primary importance in plant breeding to ensure consistency in phenotype across a range of environments. However, selection efficiency and accuracy for stability traits can be hindered due to the requirement of obtaining phenotype data across multiple years and environments for proper stability analysis. Genomic selection is a method that allows prediction of a phenotype prior to observation in the field using genome-wide marker data and phenotype data from a training population. To assess prediction of stability traits, two elite-yielding soybean populations developed three years apart in the same breeding program were used. The individuals in each population were tested across three years and seven or more environments, allowing for calculation of observed stability and assessment of prediction accuracy. The primary goal of this research was to provide an overview of genomic selection for yield stability, protein content stability, and oil content stability in an applied soybean breeding program. Factors affecting prediction accuracy were assessed, including SNP density, SNP marker type, and stability measure. Briefly, predictive abilities were low across all stability traits and stability measures for prediction across populations, ranging from -0.01 to 0.37. During applied prediction of non-parametric measures for yield stability, we obtained rank coincidence of roughly 0.65. When individuals in the top half of predicted stability are selected, roughly 65% of those individuals are expected to be in the top half of observed stability. For prediction of protein and oil content stability for static environmental variance stability, we obtained rank coincidence of 0.59 and 0.58. While predictive abilities were too low for use in a breeding program, rank coincidence gave more promising results for applied genomic selection for stability traits. With improvement in methods such as prediction model, SNP type, and greater training and validation phenotype environments, there is potential for genomic selection to effectively improve stability in a breeding program by implementing selection at an early stage when phenotype data are insufficient to select for stability.
Download or read book Genetics and Genomics of Soybean written by Gary Stacey and published by Springer Science & Business Media. This book was released on 2008-05-07 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soybean genomics is of great interest as one of the most economically important crops and a major food source. This book covers recent advances in soybean genome research, including classical, RFLP, SSR, and SNP markers; genomic and cDNA libraries; functional genomics platforms; genetic and physical maps; and gene expression profiles. The book is for researchers and students in plant genetics and genomics, plant biology and pathology, agronomy, and food sciences.
Download or read book Genetics Genomics and Breeding of Soybean written by Kristin Bilyeu and published by CRC Press. This book was released on 2016-04-19 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The soybean is an economically important leguminous seed crop for feed and food products that is rich in seed protein (about 40 percent) and oil (about 20 percent); it enriches the soil by fixing nitrogen in symbiosis with bacteria. Soybean was domesticated in northeastern China about 2500 BC and subsequently spread to other countries. The enormous
Download or read book The Soybean Genome written by Henry T. Nguyen and published by Springer. This book was released on 2017-09-20 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the application of soybean genome sequences to comparative, structural, and functional genomics. Since the availability of the soybean genome sequence has revolutionized molecular research on this important crop species, the book also describes how the genome sequence has shaped research on transposon biology and applications for gene identification, tilling and positional gene cloning. Further, the book shows how the genome sequence influences research in the areas of genetic mapping, marker development, and genome-wide association mapping for identifying important trait genes and soybean breeding. In closing, the economic and botanical aspects of the soybean are also addressed.
Download or read book Coefficient of parantage and Genetic similarity Estimates for 258 North American Soybean Cultivars Released by Public Agencies During 1945 88 written by T. E. Carter Junior and published by . This book was released on 1993 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a catalog of genetic relations among 258 soybean cultivars released by public agencies during 1945-88. Its purpose is to provide soybean breeders with a practical guide for the selection of good parental material and for the preservation of genetic diversity in their breeding programs. To develop this guide, we used pedigree analysis, a common technique in plant breeding. Based on the concept of allelic identity by descent, this approach uses the familial relationships among cultivars to quantify the probability of two cultivars having identical genes at a random locus. This probability is known as the coefficient of parentage. The calculation of coefficient of parentage requires some assumptions regarding relations among the ancestors of modern soybean cultivars. Because these assumptions have some potential for altering the interpretation of our results, we present two estimates of genetic relatedness of soybean cultivars, using different assumptions for calculation in each analysis. In the first analysis, we make the convertional assumption that the original plant introductions used in North American soybean breeding (those for which pedigrees are unknown) are all equally unrelated. In the secon, which we refer to as a genetic similarity analysis, we assume that patterns of relatedness do exist in this original founding stock. Gizlice (1991) compared phenotypes of 14 plant introductions that constitute 70% of the genetic material use in U.S. soybean breeding and also described patterns of diversity within this group. We superimposed this information on the conventional pedigree analysis to obtain genetic-similarity estimates for the 258 cultivars. As an additional measure of diversity in soybean, we also present the coefficient of parentage between the cultivars mentioned and 50 major ancestors of the modern soybean. Our results summarize the complicated pedigrees in a simple way so that breeders can easily determine the genetic diversity of the material in their program.
Download or read book Assessment of Plant Introductions for Increasing the Genetic Variability of Soybean Populations written by James Mark Narvel and published by . This book was released on 1999 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: AP10 to AP13 had higher means and more genetic variability for seed weight and, in particular, protein content, suggesting PIs may be valuable for the simultaneous improvement of yield and protein in a recurrent selection program. Eleven multiplex sets comprising 74 SSR markers were developed to analyze the molecular diversity of the PI and elite parents of AP10 to AP14. Results from the analysis showed greater diversity and less genetic similarity among the PIs than among the elite genotypes. The least amount of genetic similarity was between the PIs and elite genotypes. The ability of SSRs to distinguish among elite soybean genotypes and PIs with agronomic merit may facilitate the transfer of favorable alleles from PIs into elite populations.
Download or read book Genetic Diversity for Restriction Fragment Length Polymorphism RFLP Markers Within Soybean Glycine Max L Merr Germ Plasm and Its Use as a Selection Criterion for Parents in a Breeding Program written by Theodore James Kisha and published by . This book was released on 1996 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Designing Value added Soybeans for Markets of the Future written by Richard F. Wilson and published by The American Oil Chemists Society. This book was released on 1991 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1989/1990 World soybean situation and outlook. Tne national system for soybean oil and protein testing. Constituent pricing: how will it impact soybean research priorities. Recent developments in the national plant germplasm system. Genetic resources and utilization of the USDA soybean germplasm collection. Advances in the genetic alteration of soybean oil composition. Cellular and molecular biology of soybean oil storage organelles. Biochemical and physiological regulation of nitrogen metabolism in soybean. Molecular genetic control of protein composition and quality in soybean. Restriction fragment length polymorphism mapping of genes for protein and oil contents in soybean. Development of high-yielding high-protein soybean germplasm. Potential commercial applications of advances in soybean breeding and biotechnology. Perspective on the applications of utility patents to plant germplasm .
Download or read book Soybean Genetics Newsletter written by and published by . This book was released on 1981 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Germplasm written by Reda Sammour and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soybean is recognized as one of the most important grain legume in the world. It is also an important source of oil and protein. Therefore, thousands of breeding lines and hundreds of elite cultivars are developed yearly in soybean hybridization programmes over the world, increasing genetic uniformity in the frame of soybean. To widen the genetic basis of uniformity of soybean germplasm, new sources of genetic variation must introduce. To do this, criteria for parental stock selection need to be considered not only by agronomic value, but also from the point of view of their genetic dissimilarity. Therefore, the evaluation of genetic variation in soybean is a very important task not only for population genetics but also for plant breeders. The genetic variation can be analyzed by agronomic and biochemical traits, and molecular marker polymorphisms. Utilization of exotic germplasm for characteristics such as disease resistance or agronomic traits is the ultimate goal of assessing genetic diversity in plant crops including soybean. Particularly, we except to face in future new plant diseases or pests, climatic change due to the greenhouse effect, and so forth.
Download or read book Characterization of a Diverse USDA Collection of Wild Soybean glycine Soja Siebold Zucc Accessions and Subsequent Mapping for Seed Composition and Agronomic Traits in a RIL Population written by Thang Cao La and published by . This book was released on 2018 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relatively low genomic variation of current U.S. soybean [Glycine max (L.) Merill] cultivars constrains the improvement of grain yield, seed quality, and other agronomic traits within soybean breeding programs. Recently, a substantial effort has been undertaken to introduce novel genetic diversity present in wild soybean (Glycine soja Siebold & Zucc.) into new elite cultivars, in both public and private applied soybean breeding programs. The objectives of this research were to evaluate the phenotypic diversity within a core collection of 80 G. soja plant introductions (PIs) in the United States Department of Agriculture National Genetic Resources Program that were collected in China, Japan, Russia, and South Korea, and to analyze the correlations between agronomic and seed composition traits. Field tests were conducted in Missouri and North Carolina during three years, 2013, 2014, and 2015, in a randomized complete block design (n=3). The phenotypic data collected included plant maturity date, seed weight, and the seed concentration of protein, oil, essential amino acid, fatty acid, and soluble carbohydrates. Analyzing the data from six environments, we found genotype was a significant (p
Download or read book Soybean molecular breeding and genetics written by Guo-Liang Jiang and published by Frontiers Media SA. This book was released on 2023-03-29 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soybean Varietal Diversity in the People s Republic of China written by Laura A. Saxe and published by . This book was released on 2000 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Analysis of Quality Traits for Food grade Soybean Glycine Max L Merr in a Breeding Population written by Mao Huang and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Food-grade soybeans are a specialty crop with unique chemical and physical seed quality requirements. The tofu production market requires large, round soybean seed with a clear hilum and high protein content. The aim of this project was to detect QTL responsible for traits important in food-grade soybeans, and to provide information for the selection of food-grade soybeans in a breeding program. This study assessed seed shape, size, density, weight, protein content, and oil content in two independent populations of breeding lines and cultivars as well as textural traits of the tofu produced from a subset of those. By identifying the relationship between seed traits and tofu texture, the previously established positive correlation between seed protein content and the stiffness and gel strength of tofu were confirmed. Little to no correlations between seed size and shape measurements and the texture of tofu were detected, indicating that this consumer preference for large, round seeds may not relate to tofu quality. The effects of selection for specialty traits on the genetic differentiation within a breeding program were assessed, results shown that both parental and progeny selection contributed to genetic differentiation and population structure. Association mapping was conducted with 504 markers in a population of 242 breeding lines and cultivars, leading to the identification of 50 significant marker-trait associations. Of the 27 significant associations tested in another independent confirmation population consisting of 152 lines or cultivars, 12 were confirmed. These results can be directly applied to increase selection efficiency in a breeding program.
Download or read book Quantitative Trait Loci for Soybean Seed Yield in Elite and Plant Introduction Germplasm written by Matthew David Smalley and published by . This book was released on 2002 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic improvement for yield in soybean [Glycine max (L.) Merrill] has been accomplished by breeding within a narrow elite gene pool. Plant introductions (PIs) may be useful for obtaining additional increases in yield if unique and desirable alleles at quantitative trait loci (QTL) can be identified. The objectives of the study were to identify QTL for yield in elite and PI germplasm and to determine if the PIs possessed favorable alleles for yield. Allele frequencies were measured with simple sequence repeat (SSR) markers in three populations that differed in their percentage of PI parentage. AP10 had 40 PI parents, AP12 had 40 PI and 40 elite parents, and AP14 had 40 elite parents. Four cycles of recurrent selection for yield had been conducted in the three populations. Nei's genetic distance indicated that AP10, AP12, and AP14 remained distinct through cycle 4 (C4), but that the genetic diversity narrowed within each population. Less gametic phase disequilibrium (GPD) was observed in the parents used to form the cycle 0 (C0) populations than in C4 of AP12 and AP14. Allele frequencies of the highest-yielding C4 lines in the three populations were compared with the parents used to form the populations of the initial cycles. Allele flow was simulated to account for genetic drift. Ninety-two SSRs were associated with 56 yield QTL. Nine of the QTL had been identified in previous research. Thirty-three favorable marker alleles were unique to the PI parents. The restriction of alleles from the 40 C0 parents to the 20 cycle 1 (C1) parents of AP10 was reflected in the number of alleles that had frequency changes and could explain the reduced genetic variance for yield in the C4 of AP10. Genetic asymmetry may account for the different genetic gain for yield that had been observed between AP10 and AP14.
