Título:	Mapping and stability of QTLs for seed weight in common beans under different environments.
Autor:	MELO, L. C. SANTOS, J. B. dos FERREIRA, D. F.
Afiliación:	LEONARDO CUNHA MELO, CNPAF; JOÃO BOSCO DOS SANTOS, UFLA; DANIEL FURTADO FERREIRA, UFLA.
Año:	2002
Referencia:	Crop Breeding and Applied Biotechnology, v. 2, n. 2, p. 227-236, June 2002.
Descripción:	The objectives were: 1 - to identify, under different environments, RAPD markers linked to loci that control the 100 seed weight of common beans; 2 - to evaluate the existence of interactions involving QTL's with planting dates and locations; 3 - to compare detection procedures of markers linked to QTL's utilizing the methods of mapping and multiple regression. One hundred and minety-six recombinant inbred lines derived from the cross of cultivars Carioca x Flor de Mayo were evaluated under two tradtional sowing dates for common beans in 1996, 1997 and 1998, in Lavras and Patos de Minas, Brazil. For the phenotypic evaluation of the families, seven field experiments were conduced. The experimental design used was a 14 x 14 partially balanced Square Simple Lattice. Results indicated that interaction of QTL's by location were significant, and some stable QTL's were identified. Multiple regression analysis identified a greater number of QTL's-linked markers than the process of composite interval mapping. There was no coincidence between results obtained with the two methods studied. Molecular markers which were considered of greater potential use on marker-assisted selection for seed weight were OPN-02 (1445 pb) e OPM-06 (1096 pb).
Thesagro:	Feijão Phaseolus Vulgaris Semente
Palabras clave:	Seed weight QTLs Environments interactions RAPD Mapeamento Estabilidade Marcador
Tipo de Material:	Artigo de periódico
Acceso:	openAccess
Aparece en las colecciones:	Artigo em periódico indexado (CNPAF)