Combining ability and heterosis in Brassica campestris L.
1997
Nasim, M. | Rahman, L. | Quddus, M.A. | Alan, M.S. (Bangladesh Agricultural Univ., Mymensingh (Bangladesh). Dept. of Genetics and Plant Breeding)
Results of a half diallel cross in F1 generation in Brassica campestris L. among six parents revealed that both additive and nonadditive genes played a role in the control of nine characteristics; an additive gene effect was predominant for days to flowering, plant height at maturity and 1000-seed weight; there was a nonadditive effect for the number of primary branches/ plant, the number of secondary branches/plant, the number of siliquae/plant, the siliqua length, number of seeds/siliqua and seed yield /plant. Parents and crosses differed for gcas, scas and the heterotic effects for different characters. Parents showing the highest gca effects for different characteristics were identified. About 1/3 of the crosses depicted significant sca and a high degree of heterosis over better parents; this favors a hybrid breeding program. The best parent for the most important characteristic, seed yield / plant was identified.
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