Stability analysis of elite breeding lines of upland cotton [Gossypium hirsutum L.) for seed cotton yield and its component traits

摘要

The present investigation was carried out by adopting stability analysis for eleven characters in thirty elite breeding lines of upland cotton planted under three environments. The observations were taken at different sowing dates of the genotypes (early, mid late and late) during kharif, 2015. The crop was sown in randomized block design with three replications at CCS Haryana Agricultural University, Hisar. The joint regression analysis revealed that the sufficient genetic variability was present among genotypes for monopods/plant, sympods/plant, days to first flower, seed index, lint index, lint yield/plant with highly variable environments chosen for the present study. Furthermore, the genotype x environment interaction was highly significant formonopods/plant, seed index and lint yield/plant. The genotype H 1505 was found to be stable and suitable for all types of environments and also deserves attention of the plant breeders for inclusion in breeding programme as adaptable and stable genotypefor seed cotton yield/ plant, respectively.