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Genetics of the concentration of copper in common bean seeds Translated title: Genética da concentração de cobre em sementes de feijão comum

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      Abstract

      The common bean (Phaseolus vulgaris L.) is an important source of copper in human nutrition. The objective of this research was to investigate the possible maternal effects on copper concentrations in the seeds of the common bean, to estimate the heritability and the selection gains in early hybrid generations for the characteristic of copper concentration and to evaluate the potential for genetic improvement. The controlled crossings were performed among IAPAR 44 x IAPAR 31 and Diamante Negro x TPS Bonito cultivars. The reciprocal F1, and F2 generations, as well as the backcross populations, were produced by each hybrid combination. The range of variation in the copper concentration among the tested progenies was from 1.07 to 7.75 mg kg-1 dry matter, and no significant maternal effect was discovered. A narrow-sense heritability was of an intermediate (51.98%) to high (61.99%) value. A 46.78% increase in the copper concentration was obtained in the seeds using only the four parents tested in this study.

      Translated abstract

      O feijão comum (Phaseolus vulgaris L.) é uma importante fonte de cobre na nutrição humana. O objetivo deste trabalho foi investigar a existência de efeito materno para a concentração de cobre em sementes de feijão comum, estimar a herdabilidade e os ganhos na seleção em gerações precoces para o caráter concentração de cobre e avaliar o potencial para o melhoramento genético. Os cruzamentos controlados foram realizados entre as cultivares IAPAR 44 x IAPAR 31 e Diamante Negro x TPS Bonito. As gerações F1, F1 recíproco, F2 e F2 recíproco, bem como as populações de retrocruzamentos foram obtidas para cada combinação híbrida. A faixa de variação da concentração de cobre entre as progênies testadas foi de 1,07 a 7,75 mg kg-1 de matéria seca, e nenhum efeito materno significativo foi detectado. A herdabilidade em sentido restrito foi de intermediária (51,98%) a alta (61,99%). Um incremento de 46,78% foi obtido para a concentração de cobre nas sementes utilizando os quatro parentais testados nesse trabalho.

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      Most cited references 19

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      Genética na Agropecuária

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        A Method for Estimating Heritability1

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          Potential for increasing the zinc content in common bean using genetic improvement

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            Author and article information

            Affiliations
            [1 ] Universidade Federal de Santa Maria Brazil
            [2 ] Instituto Federal de Educação, Ciência e Tecnologia Farroupilha Brazil
            Contributors
            Role: ND
            Role: ND
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            Journal
            asagr
            Acta Scientiarum. Agronomy
            Acta Sci., Agron.
            Editora da Universidade Estadual de Maringá - EDUEM (Maringá )
            1807-8621
            September 2013
            : 35
            : 3
            : 301-306
            S1807-86212013000300005
            10.4025/actasciagron.v35i3.16520

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

            Product
            Product Information: SciELO Brazil
            Categories
            AGRONOMY

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