A Line x Tester technique was employed in which five genotypically diverse lines of rice were crossed with eight males. Combining ability analysis revealed importance of both additive and non-additive genetic components for most of the traits. However, combining ability studies indicated that non-additive type of gene action played important role in the expression of all the traits except days to 50 percent flowering. It is recommended that inter se mating followed by pedigree method of breeding might prove useful for higher grain yield and other quantitative traits. Among females, GNR-4, NVSR-303-6 and NVSR-303-14 and among males, NAUR-1, GNR-3, IET-22121 and IRRI AMT-301 were exhibited high gca effects for grain yield per plant and were observed as good general combiner for grain yield and most of its contributing characters and these may be utilized in further breeding programme. Among top ten hybrids, six hybrids viz., GNR-4 x IET-22121, NVSR-303-14 x IET-22121, NVSR-303-6 x IRRI AMT-301, GNR-4 x GNR-3, NVSR-303-14 x NAUR-1 and NVSR-303-6 x GNR-3 exhibited both of their parents found to be good combiners.