SCREENING OF SWEET SORGHUM GENOTYPES FOR THE TRAITS RELATED TO BIOMASS AND SUGAR CONTENT
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Date
2018-08-01
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University of Agricultural Sciences, Bangalore
Abstract
The improvement of sweet sorghum (Sorghum bicolor) for biofuel traits is getting more attention globally due to its sugar-rich stalk that can be used as a renewable energy product. An understanding and proper assessment of biofuel-related traits in sweet sorghum crop is an important step toward the development of superior cultivar. A study was conducted with the objectives of evaluating 30 sweet sorghum genotypes for biomass and sugar related traits through identified sugar related markers. In the study, 30 genotypes along with two check varieties were screened for the biomass and sugar related traits by
physiological evaluation and through molecular analysis. The experimental data was subjected to statistical analysis for elucidating the information on genetic variation existing for morphological and yield related traits. The genetic variability was assessed by genotypic coefficient variation (GCV) and phenotypic coefficient of variation (PCV), heritability and genetic advance over mean (GAM), also molecular diversity analysis was done by using 15 QTLs linked SSR markers. Genotypes possessing better TSS values were IS4835, IS5361and IS14465, these 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, IS14861 and IS4835 were found to be good biomass producers and these genotypes can be grown for fodder purpose. From this study, it was shown that IS5361 is the most suitable genotype for the bioethanol production.