Abstract

                                Heterosis (over mid-parental value), inbreeding depression and inbreeding vigour were estimated among twenty hybrids generated from a 5x5 diallel analysis involving Co 4, Co 5, UG 135. UG 191 and T 9 as parents for total dry matter production (TDMP), grain yield, and harvest index. Wide range of heterosis, inbreeding depression and inbreeding vigour was observed among hybrids for all the characters studied. The implications of heterosis, inbreeding depression and breeding vigour on formulating the improvement programme was discussed and the best cross combinations which would throw superior segregants in the subsequent generations were identified.

Key words : Black gram, Heterosis, Inbreeding