Stability analysis for seed cotton yield and its component traits in intra-specific hybrids of Gossypium hirsutum

摘要

Stability analysis was carried out in 12 intra-hirsutum conventional hybrids for seed cotton yield and its component traits viz., lint yield, ginning out turn and fibre quality traits i. e. 2.5 per cent span length, micronaire value and bundle strength on three years data viz., 2001,2002 and 2003. Varieties were significant for all the traits, except, bundle strength (g/tex). Variety x environment interaction was significant for all the characters, except boll weight and micronaire value, indicatingdifferentiate expression of genotypes for the characters studied. Similarly, the environment (linear) component was significant for all the characters. However, magnitude of linear component was relatively more than the non linear component. Pooled deviation (non linear) was significant for all the characters, reflecting considerable genetic diversity in the material. Based on the linear component (bi), non linear response (S~2d) and mean performance, it was found that the hybrids CSHH 198, CSHH 238 andOm Shankar were most stable genotypes for overall environments.