Genetic analysis of seed and fibre characters in upland cotton (Gossypium hirsutum L.)

摘要

Seven basie (Parental, F-1, F_2, F_3 and back erossses) generations of two crosses (H655×Super Okra and H777×Coker 417) were field evaluated at two locations for halo length, ginning percent, seed and lint index. The generation, means analysis revealed complex inheritance for fibre and seed characters as digenic or higher order genie interactions were prevalent. Invariably the additive effects were significant for all the characters in both the crosses across locations. However, the significance and magnitude of dominance effects varied greatly from cross to cross and location to location. Duplicate type of epistasis seemed to play a key role in the expression of these traits.