Eficiência de métodos de melhoramento para teor de fibra e produtividade de grãos em progênies de feijoeiro comum

Resumo

The objective was to compare breeding methods referring to genetic variability and the efficiency in obtaining superior progenies for crude fiber content and grain yield in common bean plants. The progenies were obtained by crossing Carioca in bredlines CNFC 7812 and CNFC 7829 in 2003. The segregating population was conducted by bulk, bulk within F2 and SSD until the F7 generation. In 2008, 64 progenies were chosen randomly according to each breeding method for evaluation in Goiás and Paraná States. The estimates of variance component, genetic and phenotypic parameters, means and indexes of superior progenie generations were obtained during this study. The progenies obtained by bulk and SSD methods presented significant differences for grain yield and crude fiber content along with larger genetic variance. The bulk within F2 presented higher indexes of superior progenies generation and larger averages for both characters as compared to the other methods, being recommended for breeding programs of common beans.

Descrição

Palavras-chave

Phaseolus vulgaris, Bulk dentro de famílias, Interação genótipo × ambiente, SSD, Phaseolus vulgaris, Genotype by environment, Bulk within F2, SSD, Bulk

Citação

SILVA, Adélia Cristina Fernandes et al. Eficiência de métodos de melhoramento para teor de fibra e produtividade de grãos em progênies de feijoeiro comum. Bragantia, Campinas, v. 72, n. 4, p. 326-331, 2013.