Author(s): Mayank Chaudhary and Rohit Maurya

Abstract: The aim of this study was to estimate the general combining ability (GCA) of the parents and specific combining ability (SCA) to estimate heterosis in F 1 hybrids of sorghum [Sorghum bicolor (L.) Moench] with respect to yield and its components using ten hybrids considered for the development of high yielding and better quality cultivars of forage sorghum. Ten parents diallel set excluding reciprocals was made during the season of kharif 2018 and all the 45 crosses and their ten parents were grown during kharif season 2019. All the 45 F1’s hybrids along with ten parents were sown in randomized block design with three replications. Analysis of variance for parents and crosses showed highly differed significantly for all the characters. Parents vs crosses exhibited highly significant for the attributes namely, days to 50% flowering, plant height, leaf breadth, leaf length, leaf area and green fodder yield, which indicated that wide genotypic differences among the parental lines and F1’s hybrids. On the basis of overall gca effects and per se performance among the lines, UP Chari-1 and Pant Chari-5 were identified as good general combiners for maximum 7 traits including green fodder yield, HC-171 for 6 characters and HC-308 for 5 attributes., suggested that these parents may be used in the hybridization programme aimed devolvement of superior genotypes/varieties in forage sorghum. On the basis of overall results and fodder yield performance the F1’s hybrids viz., UP Chari-1 x HC-308, UP Chari-1 x Rajasthan Chari-1, HC-308 x UP Chari-2, HC-308 x HC-171, HC-308 x CSV-17, HC-171 x CSV-84 and Pant Chari-5 x Rajasthan Chari-1 were identified as best specific combiners for maximum attributes including green fodder yield for 9 to 10 other contributing traits, which may be utilized for obtaining transgressive segregates in the next generation.

Pages: 814-818 | Views: 132 | Downloads: 3

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