Data/hora: 09/06/2024 05:51:54

Provedor de dados: | Pesquisa Agropecuária Brasileira
País: | Brazil
Título: | Combining ability and heterosis in common bean cultivars
Autores: | Gonçalves-Vidigal,Maria Celeste; Silvério,Lucas; Elias,Haroldo Tavares; Vidigal Filho,Pedro Soares; Kvitschal,Marcus Vinícius; Retuci,Vanessa Silva; Silva,Claudete Rosa da.
Data: | 2008-09-01
Ano: | 2008
Palavras-chave: | Phaseolus vulgaris; Additive effects; Diallel analysis; Interpopulational breeding; Intrapopulational breeding; Nonadditive effects.
Resumo: | The objective of this work was to determine the combining ability and heterosis, for productivity and yield components, in diallel hybrids derived from crossings between BRSMG-Talismã, IPR Uirapuru, FT Soberano, BRS Campeiro, IAC Tybatã, and IPR Juriti parent cultivars. Fifteen hybrids were generated from diallel crosses, excluding reciprocals. The general and specific combining abilities were significant for plant height, number of pods per plant, number of seeds per plant, number of seeds per pod, 50-seed weight, and grain yield, indicating the occurrence of both additive and nonadditive genetic effects. The best strategy to be adopted is the use of BRS Campeiro, FT Soberano and BRSMG-Talismã cultivars in common bean breeding programs involving selection. The most promising combinations were 'IPR Uirapuru' x 'IAC Tybatã', 'IPR Uirapuru' x 'FT Soberano', 'BRS Campeiro' x 'IPR Juriti', and 'BRS Campeiro' x 'IAC Tybatã'. The parents of these hybrids presented high estimates of specific combining abilities. Hybridization of cultivars belonging to distinguished commercial groups propitiates higher heterosis values in the segregant population.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000900007

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2008000900007
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.43 n.9 2008
Fonte: | info:eu-repo/semantics/openAccess