Assessment of Stability Performance in Pigeonpea

Exploitation of hybrid vigour is one of the potential avenues for quantum jump in the grain yield of crop plants. The identification of genetic male sterility and the presence of a considerable degree of natural outcrossing have made it possible to exploit non-additive genetic variation through economical production of heterotic hybrids in pigeonpea. It is commonly observed that the performance of different genotypes varies in different environments. The occurrence of genotype×environment interactions has provided a major challenge in obtaining a complete understanding of genetic control of variability. The study of genotype-environment interaction in biometrical aspects is thus important from the genetical and evolutionary point of view. In the present study, the phenotypic stability of 13 parents and 40 hybrids has been assessed and the stability performance of different characters in pigeonpea is computed.