Título:	Genetic variability and pedigree analysis of brazilian common bean elite genotypes.
Autoria:	ALZATE-MARIN, A. L. COSTA, M. R. SARTORATO, A. DEL PELOSO, M. J. BARROS, E. G. de MOREIRA, M. A.
Afiliação:	ANA LILIA ALZATE-MARIN, UFV; MARCIA REGINA COSTA, UFV; ALOISIO SARTORATO, CNPAF; MARIA JOSE DEL PELOSO, CNPAF; EVERALDO GONÇALVES DE BARROS, UFV; MAURILIO ALVES MOREIRA, UFV.
Ano de publicação:	2003
Referência:	Scientia Agricola, v. 60, n. 2, p. 283-290, abr./jun. 2003.
Conteúdo:	Genetic diversity is essential for any breeding program. However, breeders tend to concentrate on specific genotypes, which combine traits of interest and may be used as progenitors in several breeding programs. Common bean (Phaseolus vulgaris L.) breeding programs are not different in this sense. In this study, the genetic diversity of 21 common bean elite lines from the Bean Regional Trials conducted by the Embrapa Rice and Bean Research Center was evaluated using the Random Amplified Polymorphic DNA (RAPD) and pedigree analyses. Based on genetic dissimilarity, three groups were defined: group I - lines 1, 9 and 10, with low genetic distances among them (0.00 to 0.06), originated from 11 Mesoamerican parents; group II - 17 lines with genetic distances ranging from 0.03 to 0.33, originated from 50 parents (mostly Mesoamerican); and group III - line 21 (PR 93201472), which parents are the Andean cultivar 'Pompadour' and the cultivar 'Irai' (unknown origin). The genetic distances between line 21 and the lines of the other two groups varied from 0.68 to 0.93. Pedigree analyses demonstrated that cultivars 'Carioca', 'Cornell 49-242', 'Jamapa', 'Tlalnepantla 64', 'Tara' and 'Veranic 2', all of Mesoamerican origin, were the most widely used parents for developing lines present in group II.
Thesagro:	Feijão Genética Marcador Molecular Melhoramento Phaseolus Vulgaris
Palavras-chave:	Cultivares andinos Cultivares Mesoamericanos RAPD Distancia
Digital Object Identifier:	https://doi.org/10.1590/S0103-90162003000200012
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPAF)