Abstract
An 8 × 8 diallel cross analysis (eight parents plus their 28 nonreciprocal crosses) involving the diverse parents, L.S.S., 320F, H14, LL54, J34, A102, K2262, and SA594 was conducted for estimating the gene effects, through component analysis and graphic analysis, for six yield characters viz. yield per plant, number of bolls, boll weight, number of loculi, number of monopodia and number of sympodia in upland cotton (Gossypium hirsutum). Additive and dominance genetic variances were both found to be significant for the different characters. The graphic analysis indicates presence of epistatic gene effects for all the characters except number of sympodia. Recurrent selection procedure for maximum exploitation of the prevalent gene actions was suggested for evolving high yielding cotton varieties.
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