Screening of Sweet Sorghum Genotypes for the Traits Related to Biomassand Sugar Content

摘要

The improvement of sweet sorghum [Sorghum bicolor (L.)] is getting more attention due to its sugar-rich stalk that can be used as a renewable energy product. The proper assessment of biofuel-related traits in sweet sorghum crop is an important step towards the development of superior cultivar. A study was conducted with the objective of evaluating 3 0 sweet sorghum genotypes for biomass and sugar related traits through identified sugar related markers. In the study, thirty genotypes along with two check varieties were screened by physiological evaluation and through molecular analysis. The experimental data was subjected to statistical analysis for elucidating the information on genetic variability. It was assessed for genotypic coefficient variation (GCV) and phenotypic coefficient of variation (PCV), heritability (H2) and genetic advance over mean (GAM). The molecular diversity analysis was done by using 15 QTLs linked SSR markers. Genotypes possessing better TSS values were IS4835, IS5361andIS14465, which can be preferred for the ethanol production also. These genotypes can be used in the breeding programs as parents for high TSS. The genotypes such as IS5361, IS 14861 andIS4835 were found to be good biomass producers and these genotypes can begrown for fodder purpose. From the study, it is concluded that IS5361 is the most suitable genotype for the bioethanol production.