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Akash Singh and S.K. Singh*
Department of Genetics and Plant Breeding
Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut – 250 110
Email: shivkumar301968@gmail.com
Received-22.07.2017, Revised-15.08.2017
Abstract: Estimates of variance among line with respect to gca was found highly significant for all the attributes and variance among testers with respect to gca was recorded highly significant for all the traits except stem girth. The variances among crosses due to interaction between lines x testers genotypes with respect to sca were expressed highly significant for all the characters except stem girth and number of leaves per plant. Average degree of dominance (δ2s/δ2g) 0.5 exhibited partial dominance for plant height, leaf length, leaf breadth, internode length, leaf area, leaf stem ratio and green fodder yield and over dominance was observed for days to 50% flowering, number of leaves per plant, stem girth, total soluble solids and protein content. GCA effects and per se performance among the parents HC260, Pusa Chari23, SPV815, Pusa Chari6, HC260 and HC171 were found to be as good general combiner and the F1’s hybrids i.e. HC260 x HC308, HC260 x G48, SSG-59-3 x G48, HJ513 x HC308, HJ513 x HC171, ICSV700 x HC308, UP Chari2 x G48, UP Chari1 x Pant Chari6, Pusa Chari9 x HC171 and Rajasthan Chari1 x G48 were identified with significant and positive SCA for fodder yield which may be utilized for obtaining transgressive segment in the next generation and also could be exploited for development of hybrids.
Keywords: Sorghum bicolor, Gene action, Combining ability, Quality parameters
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