Download or read book Studies on Relataive Performance of Certain Interspecific Hybrids of Sorghum Sorghum Bicdor L Moench and Intergeric Hybrids of Maize Zea Mays L in Forage Production and Qual written by S. Krishna Murthy and published by . This book was released on 1991 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Studies on Sweet Stalk Based Forage Sorghum Sorghum Bicolor L Moench Hybrids written by BELAVATAGI SHAFIQ F and published by . This book was released on 1997 with total page 148 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 Evaluation of the Heterotic Potential of Sorghum Sorghum Bicolor L Moench Adapted to the Southern Africa Region written by Leo Thokoza Mpofu and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorghum [Sorghum bicolor (L.) Moench] production in Africa is widespread with low yields due to low inputs and the lack of sorghum hybrids. This situation has forced most of these farmers to grow maize hybrids since they are readily available in the seed market. Sorghum hybrids could be used if their potential was demonstrated. The objective of this study is to document the level of heterosis in Southern Africa sorghum germplasm. The performance of 52 F1 grain sorghum hybrids and their parental lines was evaluated in four environments. Measurements for grain yield, panicle exsertion, days to mid anthesis and plant height were analyzed to obtain estimates of high parent heterosis. High parent heterosis was observed to be 37.18% for yield, 82.77% for exsertion, 0.02% for days to mid anthesis and 23.7% for height. ICSR-939 and (87EON366*90EON328)-LD30 can be used as testers to develop more female lines for further hybrid seed production in breeding programs because they had the highest general combining ability. Protein content averaged 11.69%. ATx635 had significantly higher protein content than ATx631 (13.49% compared to 9.69%, respectively) and its hybrids had more protein than ATx631 hybrids (11.6% compared to 10.67% for ATx631). Mean heterosis for protein content was negative at -12.5%. This shows that hybrids had lower protein content than their parents since protein content is negatively correlated to grain yield ( -0.35**). Starch content averaged 72.13% and ATx631 hybrids had more starch than ATx635 hybrids (73.16 compared to 72.37% respectively). Two hybrids, ATx. 631/(87EON366*90EON328)-LD30 and ATx631/ ((TAM428*SV1)*CE151)-LD3 had the highest yields (5.04 t/ha and 4.93 t/ha, respectively). These hybrids also had small grains with good hardness and acceptable whiteness. They had good exsertion, flowered in good time and had acceptable plant heights. These two hybrids were compared to regional check varieties Macia and Tegemeo for all traits and they were either superior or within an acceptable range. These two hybrids are therefore recommended for release in the region. There is need therefore to start working on the various components of seed systems in the region so that seed of these two hybrids is made available to farmers who need the seed.

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 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 Studies on Standardheterosis Grain and Fodder Quality of Certain New Varieties and Hybrids of Sorghum Sorghum Bicolor L Moench written by K. Keshavulu and published by . This book was released on 1996 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance of Grain Sorghum Hybrids in South Carolina written by and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Performance of Sorghum Sorghum Bicolor L Moench Hybrids and Their Parents Across Locations written by Maria Eugenia Santos Nunes and published by . This book was released on 1991 with total page 234 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 Wide Hybridization Genomic and Overwintering Characterization of High biomass Sorghum Spp Feedstocks written by David Kyle Whitmire and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The federally mandated 36 billion gallons a year production goal for "advanced biofuels" by 2022 has created a demand for lignocellulosic feedstocks that are inexpensive to produce. The current lack of market development for lignocellulosic feedstocks incentivizes the development of versatile biomass products with greater end-use possibilities, as in either a forage or bioenergy system. High-biomass, perennial grasses offer dual-use potential in either forage or biofuel systems. In 2009 and 2010 controlled pollinations were made to evaluate the efficiency of producing interspecific hybrids between homozygous recessive iap/iap and Iap/- Sorghum bicolor (L.) Moench, cultivated sorghum, and three S. halepense (L.) Pers., johnsongrass, genotypes. The iap/iap genotype removes reproductive barriers to alien pollen in S. bicolor and aids in wide hybridization. Total seed set, germinable seed set, and hybrid production were significantly higher using the iap/iap genotype. The iap/iap S. bicolor genotype is a valuable tool available to plant breeders for the creation of wide hybrids with S. halepense. In a related study a bulked segregant analysis was conducted using bulked samples of S. bicolor, typical flowering S. halepense, non-flowering S. halepense, and putative triploid hybrids of the two species to identify unique markers for each bulk and to evaluate S. bicolor genetic material introgression into the non-flowering S. halepense genome. Thirty-nine and 23 markers were found to be unique to the S. bicolor and typical flowering S. halepense bulks, respectively. These unique markers could be used in a breeding program to identify interspecific hybrids. Alleles at fifteen markers were found in both the S. bicolor and non-flowering S. halepense bulks but not in typical flowering S. halepense and may help explain the non-flowering phenotype. In 2010 and 2011 a study was conducted to investigate the rhizome composition of 11 genotypes of Sorghum species and its relationship to overwintering. Genotype, environment, and sampling date had significant effects on rhizome metabolite concentrations. Overwintering capacity was related to fructans and crude protein concentrations and NIRS (Near Infrared Spectroscopy) was effective at estimating these values. This information can be used to screen for stronger perennial parents to be used in future breeding programs.

Download or read book Studies on Performance of Sorghum Sorghum Bicolor L Moench Genotypes on Seed Yield Quality and Longevity written by Mallikarjun Sherakhane and published by . This book was released on 2020 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies Relating to Heterosis and Combining Ability of Certain Forage Quality Parameters in Diverse Sorghum Sorghum Bicolor L Moench Genotypes written by V. Usha and published by . This book was released on 1991 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study in Sorghum Bicolor written by Matthew Scott Bartek and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently designated as a bioenergy crop, Sorghum is rather unique as it can produce large quantities of cellulose or sugar which can be used to produce advanced biofuels or compounds. Sweet sorghum contains high levels of sugars and biomass sorghums consist primarily of ligno-cellulosic biomass. Improvement of both sorghum types is essential for maximizing production and conversion efficiency. Photoperiod sensitive sorghum is thought to maximize biomass production yet maturity influence on biomass production and composition is not fully understood. Utilizing sorghum for sugar production has increased efforts to develop sweet sorghums with sugar yields similar to sugarcane. Hybridization of these species has been investigated with, until recently, little success. Testing newly developed intergeneric hybrids and improvement of parents used in their creation will determine their feasibility and improve hybrid performance. Objectives of this research are multifaceted. First, analyze photoperiod sensitive sorghum in varying day length environments to determine maturity effects on plant phenotype, composition, and QTL detection. Second, analyze intergeneric sorghum x sugarcane hybrids to determine agronomic performance in relation to sugarcane. Lastly, introgress the iap allele into sweet sorghum females for use in intergeneric hybrid creation. Photoperiod sensitive sorghum RILs were evaluated in College Station and Weslaco, Texas and Puerto Rico which caused differential expression of plant maturity. Genetic control of trait expression was high for each location. Results indicate gradual induction of plant maturity increases detection of phenotypic QTL and detection of compositional QTL increases when maturity effects on plant phenotype are reduced. Intergeneric sorghum x sugarcane F1 hybrids were compared to sugarcane in Weslaco, Texas in 2011. Each hybrid expressed agronomic traits similar or better than that of the sugarcane variety. High levels of repeatability and genetic influence on trait expression were observed. Overall performance of the sugarcane variety was better than any individual hybrid tested. Introgression of iap into sweet sorghum was successful and generated seventeen new sweet sorghum female genotypes possessing the allele. Only two genotypes exhibited higher brix readings and both were later maturing than Tx3361. Height and maturity of all developed genotypes varied and desirability of developed lines was similar to Tx3361. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151262

Download or read book Breeding Sorghum for Drought Tolerance written by Fantaye Belay and published by . This book was released on 2017-05-30 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance of Grain Sorghum Hybrids at the Lower Rio Grande Valley Research and Extension Center written by J. L. Hubbard and published by . This book was released on 1965 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: