Download or read book Performance Stability Parameters Genetic Effects and Prediction of Performance in Single Three way and Double cross Hybrids of Sorghum Sorghum Bicolor L Moench written by George Anthony Ombakho and published by . This book was released on 1994 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1995 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book INTSORMIL Sorghum and Millet Collaborative Research Support Program CRSP Bibliography written by USAID Title XII Collaborative Research Support Program on Sorghum and Pearl Millet and published by . This book was released on 2002 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance and Within hybrid Variability of Three way and Single crosses in Grain Sorghum Sorghum Bicolor L Moench written by Edward Joseph Walsh and published by . This book was released on 1971 with total page 354 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 Comprehensive Dissertation Index written by and published by . This book was released on 1984 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1973- include the following subject areas: Biological sciences, Agriculture, Chemistry, Environmental sciences, Health sciences, Engineering, Mathematics and statistics, Earth sciences, Physics, Education, Psychology, Sociology, Anthropology, History, Law & political science, Business & economics, Geography & regional planning, Language & literature, Fine arts, Library & information science, Mass communications, Music, Philosophy and Religion.

Download or read book Comprehensive Dissertation Index Agriculture written by and published by . This book was released on 1984 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Performance and Basis for Differences Among Sorghum Sorghum Bicolor L Moench Hybrids from Differenct Periods of Sorghum Improvement written by Yilma Kebede and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Lines from the Sorghum Conversion Program for Combining Ability Heterosis and Genetic Effects in Single cross and Three way Hybrids written by Paisan Laosuwan and published by . This book was released on 1975 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance of Interspecific Three Way Cross Forage Sorghum Hybrids written by K. Swarupa Rani and published by . This book was released on 1990 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Environmental Responses and Genetic Effects for Yield in Single crosses and Three way Hybrids of Grain Sorghum written by Aran Patanothai and published by . This book was released on 1972 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic and Environmental Effects on Phenolic Composition and Agronomic Performance in Black Sorghum Sorghum Bicolor L Hybrids written by Chad Matthew Hayes and published by . This book was released on 2013 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: A healthy diet requires a shift from the consumption of highly refined and processed foods with low nutritional value and towards whole grain food that have increased levels of antioxidants and phenolic compounds. Certain specialty sorghum genotypes have been identified as potential whole grain foods that have high levels of desired chemical compounds. Specifically, sorghums with a black pericarp are excellent sources of antioxidant compounds, including the unique compound 3-deoxyanthocyanin (3-DOA). Although extensive work has been performed on the chemistry and food properties of black sorghum inbreds, little research has been done studying the grain phenolic composition and agronomic performance of black sorghum hybrids in production environments. The goal of this study was to evaluate black sorghum hybrids with differing genetic backgrounds for grain phenolic composition and agronomic performance across multiple environments and identify the best lines for producing these hybrids. Results from this study confirm that sorghums with a black pericarp contain elevated levels of phenols, tannins and 3-DOA. Concentrations of these beneficial compounds were many times the concentration levels seen in traditional grain hybrids. Grain yields of black sorghum hybrids averaged 36% below commercial hybrids in this study. Lower grain yields could be due to reduced heterosis in black sorghum hybrids and other unknown factors associated with the black phenotype. From this study, the Texas AgriLife Sorghum Breeding Program has developed two elite black sorghum lines for release as the first publicly available black pericarp seed parents. These newly developed seed parents, proposed for release as Tx3363 and Tx3364, allow for the creation of the first temperately adapted black seeded grain hybrid. These hybrids help address the growing demand for products that are healthy, and provide natural and stable antioxidant compounds for a growing health food industry. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/148249

Download or read book Production and Breeding of Chilli Peppers Capsicum spp written by Elizanilda Ramalho do Rêgo and published by Springer. This book was released on 2016-04-05 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contains aspects of production, genetics and breeding of Capsicum species with emphasis on fruit quality, yield and its nutritional characteristics among with some specific chapters focusing on breeding and physiological features of potted ornamental Chili and responses to abiotic stress and postharvest of fruits.

Download or read book Inheritance of Seed Weight in a Grain Sorghum Sorghum Bicolor L Moench Cross Inheritance of Germination Rate in a Grain Sorghum Sorghum Bicolor L Moench Cross Dosage Effect of Waxy Gene wx on Maltose Production and Degree of Hydrolysis of Three Grain Sorghum Sorghum Bicolor L Moench Varieties and Their F1 Hybrids written by Douglas Miguel Tovar and published by . This book was released on 1976 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agronomic Performance of Grain Sorghum Hybrids Sorghum Bicolor L Moench Under Several Environments as a Function of Their Male Parent Selection written by Mohamed Samy Abd El-Fatth Mostafa and published by . This book was released on 1986 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Variation in Seed Specific Gravity in Sorghum Sorghum Bicolor L Moench written by A.S. Goggi and published by . This book was released on 1990 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seeds of seven hybrid and open pollinated sorghum cultivars were separated with sucrose density solutions into four specific gravity (SG) classes for studies on the effects of seed SG on field performance. The seeds were planted at different densities to provide three levels of competition: "normal" planting density; one high and one low SG seeds in the same hill; and single seeds in widely spaced hills, no competition. There were no differences among the high, medium-low and unseparated (control) seed SG treatments for emergence, vegetative and reproductive development for the normal density plantings. Yield, however, was significantly lower for plants of the unseparated (control) seeds as compared to the SG separated seeds. When high and low SG seeds were planted in the same hill, emergence of the high SG seeds was higher and they produced more vigorous plants that produced more tillers, matured earlier and yielded more as compared to those from low SG seeds. In the case of high and low SG seeds planted at non-competitive spacing, emergence, plant height, number of tillers and yield were higher and the number of days to panicle exsertion and anthesis were fewer for the plants from the high SG seeds as compared to those from the low SG seeds. Priming of high SG seeds did not enhance plant performance above the level of the high SG unprimed seeds. Seed SG was greatly affected by the degreee of weathering and immaturity. As the degree of weathering or immaturity increased, the percentages of seeds in the two highest SG classes sharply declined, while those for the two lowest SG classes sharply increased. Seeds from the intense weathering treatments exhibited cavitation and profuse fungal growth in the placental sac area and in the embryo. Similar cavitation was observed in seeds from the immaturity treatments. Differences in the speed of germination among the unweathered, mature, high SG seeds appeared to be related to differences in permeability of the pericarp to water and/or oxygen.

Download or read book Effect of Seed Vigor Upon Field Performance and Yield of Grain Sorghum Sorghum Bicolor L Moench written by Cilas P. Camargo and published by . This book was released on 1971 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid grain sorghum seeds were aged artifically for 0, 3, 5, 7, and 11 days at 42oC and 100% RH, wich produced high, medium, low and lowest vigor level. Among the various laboratory tests performed, standard germination and field mergence, were the least sensitive in discerning the physiological condition of the seed lots. The speed of germination more accurately differentiated the degree of deterioration of the seed lots and was closety correlated to yield. Adverse effect of planting low vigor seeds was found to be related to plant height, panicle exsertion, anthesis, tillering capacity, length of the panicle, and yield. Less vigours seeds produced plants which were not able to "catch up" to the vigorous ones. These slow growing plants were significantly inferior in panicle exsertion to those produced from more vigorous seeds. Seeds aged for 7 and 11 days had their process of exsertion delayed for about 2 and 3 days, respectively. Anthesis, conseguently, was also significantly retarded. Tillering capacity of plants produced from low vigor seeds was significantly reduced, as well as grain yield. Primary head yield was also significantly reduced about 14% for the more deteriorated seeds, and 12% for the mixed treatment, as compared to the control. Yield reductions of 9, 4, and 3% were also detected in seeds aged for 7, 5, and 3 days, respectively, as compared to the check. Seed moisture content generally increases as the vigor level decreased, indicating that the process of maturation was delayed as a (...).