Diallel analysis in soybean

摘要

Combining ability was studied in a 6 X 6 diallel set of soybean (Glycine max (L.) Merrill.) for seed yield and its components. The study revealed that the variances due to gca and sca were significant for all the characters, indicating the characterswere governed by both additive and non-additive gene action. The sca variance was higher than gca variance for most of the characters, indicating preponderance of non-additive gene action in the inheritance of these traits. The genotypes Co1 and MACS 124 were found to be the good general combiners while four hybrids viz. Co1 X EC 9472, MACS 124 X Bragg, Co1 X Co2 and Co1 X EC 4296 were identified as best specific combiners for seed yield and other productive traits.