Assessment of Genetic Mechanism in Some Important Quantitative Parameters in Upland Cotton ( Gossypium hirsutum L.)

摘要

Diallel cross analysis of eight parents of cotton ( Gossypium hirsutum L.) was launched at Faculty of Agriculture, Gomal University, D.I.Khan, during 1996-99. Both additive and non additive effects were observed in case of number of bolls plant ^-1 in F₁ generation, however only additive effects were significant in F₂ generation. Significant additive and non additive effects were observed for boll weight in both the generations. The reciprocal differences were non significant for number of bolls plant ^-1 in both the generations, reflecting the absence of maternal effects or any other departure from simple autosomal inheritance. On the other hand significant reciprocal differences were concluded for boll weight, signifying the presence of maternal effects in F₁ but non significant, suggesting the absence of maternal effects in F₂ generation.