Inheritance pattern of some polygenic fiber traits in cotton ( Gossypium hirsutum L.)

Inheritance pattern of some polygenic characters was studied in five varieties of cotton. The five parents were crossed in all possible combinations. The 20 F 1 hybrids and their parents were grown in the field under randomized complete block design. Diallel analysis was used to determine the mode of gene actions and genetic components for various yield contributing and fiber traits. Results of regression coefficients showed that all the characters were fit for the genetic analysis. Both additive types of gene actions with partial dominance and over dominance were involved in the expression of the traits studied. These results suggest that these characters can be improved through appropriate selection method or by hybrid development.