| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Combining ability and heterosis in common bean cultivars
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| Autores: |
Gonçalves-Vidigal,Maria Celeste
Silvério,Lucas
Elias,Haroldo Tavares
Vidigal Filho,Pedro Soares
Kvitschal,Marcus Vinícius
Retuci,Vanessa Silva
Silva,Claudete Rosa da
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| Data: |
2008-09-01
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| Ano: |
2008
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| Palavras-chave: |
Phaseolus vulgaris
Additive effects
Diallel analysis
Interpopulational breeding
Intrapopulational breeding
Nonadditive effects
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000900007
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2008000900007
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.43 n.9 2008
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| Direitos: |
info:eu-repo/semantics/openAccess
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