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Six generations (P1, P2, F1, F2, B1 and B2) of two crosses having one row each of P1, P2 and F1; two rows each of B1 and B2 and five rows each of F2 were grown in Compact Family Block Design with three replications in Kharif, 2016-17 at Agricultural Research Farm , BHU, Varanasi. Geographically, it is situated at 25.18 0N latitude and 83.03 0E longitudes in the North Gangetic plain in the eastern part of Uttar Pradesh. The estimates of six parameters model revealed the significant contribution of both additive and dominance gene effects in most of the traits studied. In general, days to maturity, plant height, number of primary and secondary branches, pods plant-1, pod length, seeds pod-1, 100-seed weight and Seed yield plant-1, the relative contribution of dominance gene effect was even higher than those of additive gene effect. The epistatic gene effects were found to play an important role for the inheritance of almost all the characters in variable number of crosses.

Key words: Additive, Dominance, Generation means, Pigeonpea.