Phenotypic Stability of Single and Three-Way Hybrids of Cotton

Cytoplasmic-genetic male sterile lines of cotton, were employed to develop,30 hybrids. Thirty hybrids along with four checks were planted in kharif (rainy) season of 1984 in five environments. Stability analysis revealed that mean squares both for genotype × environment (linear) and pooled deviations were significant for seed cotton yield, number of bolls/plant, and average boll weight. Hybrids ICHB 36, ICHB 3, ICHB 10, ICHB 9, and ICH 24 were identified to have average stability for seed cotton yield. Hybrids JKHy 1 and ICHB 11 were suitable for favourable environments. Most of the stable hybrids originated from birsutum × barbadense crosses.