Stability analysis for yield and its component traits in American cotton (Gossypium hirsutum L.)

摘要

Stability analysis of the material consisting of 70 genotypes grown at two locations viz., Hisar and Sirsa was conducted. The crop at Sirsa was grown on two different dates, thereby creating total of three environments. The observations were recordedon 10 characters related to seed cotton yield and its components. Variance due to genotypes, environments and genotype X environment interaction was significant for all the characters studied. Major portion of G X E interaction was accounted by linear component for all the characters under study except for number of sympodia, number of bolls/plant and lint index. Out of 70 genotypes, none was found stable for all the characters studied. For seed cotton yield, only two genotypes viz.. CNH-13 and PIL-8-5were found desirable with high mean, non-significant S~2di values and significant bi values indicating their adaptability to specific environmental conditions viz., rich or poor.