Yield component analysis in introgressed lines of upland cotton (Gossypium hirsutum L.)

摘要

One hundred and three introgressed lines of Gossypium hirsutum cotton along with two checks were evaluated to study genetic variability, character association and path analysis between seed cotton yield and its component characters. Significant genotypic differences existed among the genotypes for all the characters studied. High GCV, heritability and genetic gain were recorded in seed cotton yield/plant, followed by number of bolls/plant. Both at phenotypic and genotypic level, seed cotton yield wasfound positively and strongly correlated with number of bolls/plant. This was further confirmed by path coefficient analysis. So, due weightage may be given to number of bolls/plant in yield improvement programmes. Further, it is suggested that a balance should be struck between boll weight and number of bolls/plant since they are negatively and significantly correlated with each other.