Stability analysis in okra [Abelmoschus esculentus (L.) Moench]

The phenotypic stability for fruit yield and its component traits of 64 genotypes (48 hybrids and their 16 parents) of okra grown on three different dates indicated the significant differences among the genotypes (G), environments (E) and G x E interactions for all the characters (except number of nodes at first flowering for environment and G x E interactions) indicating variable response of different genotypes for various traits under varied environmental conditions. Non-significance of G x E (linear) against pooled deviation for most of the characters under study suggested that performance of genotypes remained similar for their linear regression on environmental index. Non-linear component (pooled deviation) also played an important role for all the characters except for number of nodes at first flowering and fruit length. On the basis of mean ((X) over bar), regression coefficient (bi) and deviation from regression (S(2)di); parents JOL-06(K)-2 and GO-2 as well as hybrid JOL-06(K)-2 x GO-2 were found stable and widely adapted for general cultivation for fruit yield and its components in okra.