Título:	Genetic control of plant architecture in the common bean (Phaseolus vulgaris L.).
Autoria:	TEIXEIRA, F. F. RAMALHO, M. A. P. ABREU, A. de F. B.
Afiliação:	FLAVIA FRANÇA TEIXEIRA, UFLA; MAGNO ANTONIO PATTO RAMALHO, UFLA; ANGELA DE FATIMA BARBOSA ABREU, CNPAF.
Ano de publicação:	1999
Referência:	Genetics and Molecular Biology, v. 22, n. 4, p. 577-582, Dec. 1999.
Conteúdo:	More erect plant architecture has been a goal in the development of bean cultivars. Aiming to obtain more information about genetic control of traits related to plant architecture, this work was carried out between August 1995 and July 1997 in the southern and Alto São Francisco regions, in the State of Minas Gerais, Brazil. Initially, analyses were performed with individual plants of parents and different segregant generations from the crosses Carioca-MG x H-4 and Carioca x FT-Tarumã. In these experiments, besides degree of erectness, other traits were evaluated: ramification degree, internode length, internode diameter and height of insertion of the first pod. Mean and variance components and heritability at an individual level were estimated. Later, families derived from F2 or F3 plants of the same crosses were evaluated for degree of erectness. Genetic and phenotypic variance between family averages, heritabilities using variance components, and realized heritability were estimated. Of the morphological traits, internode length varied the most. There was a predominance of additive effect in the control of this trait. Evaluating plant architecture with individual plants for degree of erectness was not efficient. However, when families were used, genetic parameter estimates confirmed the possibility of successful selection, especially if evaluated for a few generations and/or environments, despite the strong environmental influence on trait expression.
Thesagro:	Feijão Phaseolus Vulgaris Melhoramento Genético Vegetal Controle Genético
NAL Thesaurus:	Beans Plant architecture Plant breeding
ISSN:	1678-4685
Digital Object Identifier:	10.1590/S1415-47571999000400019
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPAF)