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Crop Breeding and Applied Biotechnology

Print version ISSN 1518-7853On-line version ISSN 1984-7033


DIAS, Francisco Tiago Cunha; BERTINI, Cândida Hermínia Campos de Magalhães  and  FREIRE FILHO, Francisco Rodrigues. Genetic effects and potential parents in cowpea. Crop Breed. Appl. Biotechnol. [online]. 2016, vol.16, n.4, pp.315-320. ISSN 1518-7853.

Six cowpea genotypes and their F2 hybrid combinations were evaluated for general and specific combining ability. The Griffing's diallel cross design, Method 2, and mixed model B were used. The genotypes and hybrids differed statistically (p <0.01) for the 10 studied traits. With regard to the general and specific combining ability, there were statistical differences at 1% probability for all traits. The presence of additive and non-additive gene effects paves the way for breeding new hybrid cultivars. However, additive gene effects were predominant in the trait expression. Genotypes CE-542, CE-954 and CE-796 were identified as the most promising of the test group for inclusion in cowpea breeding programs.

Keywords : Vigna unguiculata; combining ability; diallel analysis; yield components.

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