Seven Sorghum lines, three testers and 21 crosses developed in line × tester fashion were evaluated for general combining ability (GCA), specific combining ability (SCA) effects and magnitude of heterosis and heterobeltiosis in a triplicate randomized block design, during 2012-13. Genetic variability among genotypes was assessed for days to 50% flowering, days to maturity, plant height, and number of leaves per plant, leaf length, leaf width, grain yield, 100 seed weight and dry fodder yield. Combining ability analysis revealed that the estimates of SCA variance were higher than GCA variance for all the traits indicating the preponderance of non additive gene action in the expression of these traits. The line SPV 2114 and tester GJ 39 considered as superior general combiner for grain yield, dry fodder yield and other yield contributing traits. The most promising crosses were SPV 2117 x GJ 39, SPV 2117 x SSV 74, SPV 2110 x SSV 84, CSV 15 x SSV 84, SPV 2116 x GJ 39, 2114 x GJ 39, SPV 2125 x SSV 84 and DS 2570 x SSV 74 that revealed high per se performance and significant specific combining ability and exhibited highest magnitudes of heterosis and heterobeltiosis for grain yield, fodder yield and other component traits. These crosses were derivatives of low x high and high x high parental combinations in terms of GCA effects.