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      Eficiência de métodos de melhoramento para teor de fibra e produtividade de grãos em progênies de feijoeiro comum Translated title: Efficiency of breeding methods for crude fiber content and grain yield in common bean progenies

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          Abstract

          O objetivo deste estudo foi comparar métodos de melhoramento quanto à variabilidade genética e à eficiência na obtenção de progênies superiores para teor de fibra bruta e produtividade de grãos em feijoeiro comum. As progênies foram obtidas do cruzamento, em 2003, entre as linhagens carioca CNFC 7812 e CNFC 7829. A população segregante foi conduzida por bulk, bulk dentro de F2 e SSD até geração F7. Em 2008 foram amostradas aleatoriamente 64 progênies de cada método para avaliação em Goiás e Paraná. Foram obtidas as estimativas dos componentes de variância, parâmetros genéticos e fenotípicos, média e índices de geração de progênies superiores. As progênies obtidas pelos métodos de bulk e SSD apresentaram diferenças significativas para produtividade e teor de fibra bruta e maior variância genética. O bulk dentro de F2 apresentou os maiores índices de geração de progênies superiores e maiores médias para os dois caracteres, sendo recomendado para os programas de melhoramento de feijoeiro comum.

          Translated abstract

          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.

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          Most cited references37

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          Genetic Changes Associated with the Evolution of Adaptedness in Cultivated Plants and Their Wild Progenitors

          R W Allard (1988)
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            Princípios de genética quantitativa

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              Potential contribution of dry bean dietary fiber to health

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                brag
                Bragantia
                Bragantia
                Instituto Agronômico de Campinas (Campinas )
                1678-4499
                2013
                : 72
                : 4
                : 326-331
                Affiliations
                [1 ] Universidade Federal de Goiás Brazil
                [2 ] Embrapa Arroz e Feijão Brazil
                Article
                S0006-87052013000400002
                10.1590/brag.2013.046
                4b6bceb3-58d7-4260-9443-79965e541e72

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0006-8705&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                Phaseolus vulgaris,genotype by environment,SSD,bulk,bulk within F2,interação genótipo × ambiente,bulk dentro de famílias

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