Download or read book Heterosis and Combining Ability in A1 and A2 Cytoplasm Lines of Sorghum Sorghum Bicolor L Moench written by Medson Chisi and published by . This book was released on 1988 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combining Ability and Heterosis Studies for Adaptation in Newly Developed Male and Female Inbreds of Sorghum Sorghum Bicolor L Moench written by German Jose Perez and published by . This book was released on 1985 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterosis and Combining Ability Studies for Forage Traits in Sorghum Sorghum Bicolor L Moench from Line X Tester Analysis written by Jadhav A S. and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Diversity and Combining Ability Among Sorghum Conversion Lines written by Rafael Arturo Mateo Moncada and published by . This book was released on 2006 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of AFLP markers allowed the identification of five strong clusters through estimates of genetic similarities. This classification did not group the lines by either their genetic background or their fertility reaction. This study provides information to identify specific combinations that would help to understand heterotic relationships in sorghum, and support the suggestions made by Menz and Gabriel that races in sorghum are not well defined.
Download or read book Hybrid Cultivar Development written by S.S. Banga and published by Springer Science & Business Media. This book was released on 1998-10-13 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterosis breeding based on male sterility has become established in many field crops and has been credited with high productivity. This book presents an update on the advent and promise of hybrids with comprehensive coverage of theoretical and applied aspects of heterosis breeding. Its principal elements are the hybrid advantage, pollination control mechanisms and finally the production of hybrid seeds. Individual crop specialists present in-depth analyses of intricacies involved in the development of hybrids of rice, wheat, maize, barley, pearl millet, sorghum, cotton, sunflower, rapeseed-mustard, castor, pigeonpea, tomato, onion, cole crops, peppers, and melon. The book will be used by researchers, teachers and students of botany, genetics, horticulture and plant breeding.
Download or read book Sorghum and Millet Collaborative Research Support Program written by USAID Title XII Collaborative Research Support Program on Sorghum and Pearl Millet and published by . This book was released on 1994 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Analysis of Yield and Its Components in Sorghum Sorghum Bicolor L Moench I Heterosis Combining Ability and the Nature of Genetic Variation in 9x9 Diallel Set II Heterosis Combining Ability and Components of Generation Means in A4x5 Line X Tester Set written by Patil R C. and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterosis and Combining Ability Studies in Sorghum Sorghum Bicolor L Moench written by LOKAPUR RAVINDRA G and published by . This book was released on 1997 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterosis and Combining Ability Studies in Grain Sorghum Sorghum Bicolor L Moench written by Harer P N. and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Fertility Restoration Heterosis and Combining Ability of A3 Male Sterile Cytoplasm in Sorghum sorghum Bicolor L Moench written by D. Narsaiah and published by . This book was released on 1994 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combining Ability and Heterosis for Yield Protein Lysine and Certain Plant Characters in 18 Diverse Inbreds and 56 Hybrids in Sorghum Bicolor L Moench written by Ayotunku Olabanji Abifarin and published by . This book was released on 1970 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterosis Combining Ability and Breeding Potential Studies for Grain Yield and Yield Components in Guinea Sorghums Sorghum Bicolor L Moench written by Aboubacar Toure and published by . This book was released on 1992 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agronomic Genetic and Genomic Approaches for Predicting Heterosis in Sorghum Sorghum Bicolor L Moench written by Frank Maulana and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The approach used to identify inbred lines that can produce superior hybrids is costly and time-consuming. It requires creation of all possible crosses and evaluation of the crosses to estimate combining abilities for the desired traits. Predicting heterosis or hybrid performance in any way possible may help to reduce the number of crosses to be made and evaluated. In this study, four sets of experiments were conducted to determine whether heterosis can be predicted based on inbred line performance, genetic distance between parents and genomic prediction model. The first experiment was aimed at assessing the levels of genetic diversity, population structure and linkage disequilibrium (LD) in 279 public sorghum inbred lines, based on 66,265 SNPs generated using the genotyping-by-sequencing (GBS) platform. The inbred lines were developed at different times over the last two decades and harbor robust diversity in pedigree and agronomic characteristics. Some of the inbreds are resistant to Acetolactate synthase (ALS) and Acetyl co-enzyme-A carboxylase (ACC) inhibitor herbicides. The mean polymorphic information content (PIC) and gene diversity across the entire inbreds were 0.35 and 0.46, respectively with non-herbicide resistant inbreds harboring more diversity than the herbicide resistant ones. The population structure analysis clustered the inbred lines into three major subgroups according to pedigree and fertility-reaction with the maintainer lines (B-lines) distinctly forming a separate cluster. Analysis of molecular variance (AMOVA) revealed more variation within subgroups than among subgroups. Substantial linkage disequilibrium (LD) was detected between the markers in the population with marked variation between chromosomes. This information may facilitate the use of the inbreds in sorghum breeding programs and provide perspectives for optimizing marker density for gene mapping and marker-assisted breeding. The second experiment, based on 102 F1 hybrids developed by intercrossing closely and distantly related inbreds, was conducted to investigate the relationship of genetic distance between parents with hybrid vigor or heterosis. The F1 hybrids alongside their parents were evaluated at two environments in a randomized complete block design with three replications. The results show that correlations of genetic distance between parents with hybrid performance and heterosis were variable and dependent on the trait. Though most were statistically non-significant and not strong to be used as predictor for heterosis, the results tend to show that certain level of genetic distance between parents is needed to capture maximum heterosis and hybrid performance. The objective of the third research study was to determine whether traits measured on parents can be used to predict hybrid performance in sorghum and to assess the combining ability of selected inbreds. Forty-six parental inbred lines and 75 F1 hybrids generated from intercrossing the inbreds were evaluated in four environments in a randomized complete block design with three replications. The average performance of the parents (mid-parent) was significantly correlated with hybrid performance for thousand kernel weight, days to flowering and plant height. Significant general (GCA) and specific (SCA) combining abilities were observed for most traits, with highly significant GCA effects observed for most traits as compared to SCA indicating that additive genetic effects are more important in affecting the inheritance of the traits measured. Results show that studying parental inbred line performance could generate important information for predicting hybrid performance in sorghum. The fourth experiment was aimed at assessing the efficacy of genomic prediction of hybrid performance in sorghum. Genomic prediction was performed with five-fold cross-validation procedure on 204 F1 hybrids developed using 102 inbred lines. A total of 66,265 SNP markers generated using genotyping-by-sequencing were used in this study. Results showed that increasing training population size increased prediction accuracies for all traits with the effect being different for different traits. Also, considering additive effects alone versus additive and dominance effects in the model showed similar trend of prediction accuracy but the full model (considering both additive and dominance effects of the markers) provided better prediction at least for some of the traits. The results suggest that genomic prediction could become an effective tool for predicting the performance of untested sorghum hybrids thus adding efficiency to hybrid selection.
Download or read book Studies on Heterosis Combining Ability and Fertility Restoration of A2 Male Sterile Cytoplasm in Sorghum written by Desta Gebre and published by . This book was released on 1998 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Enhancement of Rabi Sorghum written by Sanjana Reddy and published by Academic Press. This book was released on 2015-05-28 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic Enhancement of Rabi Sorghum – Adapting the Indian Durras presents both the historical background and the recent research done in breeding this important world crop for more global production. Its chapters cover topics in origin and taxonomy, morphology and breeding behavior, genetics, and cytogenetics, also looking at production, nutrition, and alternate uses. The durra race is Ethiopian in origin and its introgression with wild forms permitted adaptation to drier conditions. These have migrated and adapted to the currently known crop that is cultivated in the winter season and commonly called rabi sorghums. Grown under receding soil moisture conditions, rabi sorghums have tolerance to abiotic stresses apart from biotic stresses, unlike the rainy sorghums that are grown widely in the world. However, they must be more resilient to rapid changes in climate, for example. The variability from winter sorghums is being introgressed into rainy sorghums. With the yield plateaus reached and sorghum gaining importance as a food crop, this book will be of importance to those studying durras and their breeding. Presents both the historical background and most recent research done in breeding rabi sorghum for more global production Provides information on the adaptation of the crop and the ways it has migrated to the currently known crop, which is cultivated in winter season and commonly called as rabi sorghum Explores strategies for resilience as the crop must be prepared to withstand rapid and varying changes in climate
Download or read book Maintainer and Restorer Reaction with A1 A2 and A3 Cytoplasms of Lines from the Sorghum Converstion Program written by A. Bosques-Vega and published by . This book was released on 1989 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selection for Heterosis and Combining Ability in Grain Sorghum Sorghum Bicolor L Moench written by S. P. Mishra and published by . This book was released on 1978 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
