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      Inheritance and potential use of grain color in the identification of genotypes resistant to pre-harvest sprouting in wheat Translated title: Herança e uso potencial da cor de grãos para a identificação de genótipos resistentes à germinação pré-colheita em trigo

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          Abstract

          The inheritance of grain color and pre-harvest sprouting in wheat was studied to identify genotypes with high resistance to pre-harvest sprouting and evaluate the possible use of grain color in indirect selection of resistant lines. The genotypes of most lines were characterized with regard to the loci that control grain color. No significant correlations between grain color and pre-harvest sprouting resistance were observed, but correlations were useful when the frequency of segregating genotypes with white grain was relatively high. Of the eight F2:3 populations evaluated, only two differed significantly in grain sprouting between the white and red classes. Three genes for pre-harvest sprouting resistance seem to be present in the genotypes Frontana and Onix. Grain color should not be used as the only criterion for selecting wheat genotypes resistant to pre-harvest sprouting.

          Translated abstract

          Foi realizado um estudo de herança da cor de grãos e da germinação pré-colheita em trigo. Foram identificados os materiais com maior resistência à germinação pré-colheita, e avaliada a possibilidade de utilização da cor de grãos na seleção indireta de linhagens resistentes. Foram caracterizados os genótipos da maioria das linhagens, nos locos que controlam a cor dos grãos. As correlações foram ineficientes para identificar uma possível associação entre a cor dos grãos e a resistência à germinação, mas foram úteis quando a frequência de segregantes com grãos brancos mostrou-se relativamente alta. Das oito populações F2:3 avaliadas, apenas duas apresentaram diferenças significativas quanto à germinação de grãos entre as classes branco e vermelho. Três genes para resistência à germinação da espiga parecem estar presentes nos genótipos Frontana e Onix. A cor dos grãos não deve ser utilizada como critério único para a seleção de trigos resistentes à germinação na espiga.

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          Most cited references20

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          Different genetic components control coat-imposed and embryo-imposeddormancy in wheat

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            Programa Genes: Aplicativo Computacional em Genética e Estatística, Versão Windows

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              WHEAT EVOLUTION

              Many wild and cultivated wheat species are amphidiploid, i.e., they are polyploid species containing two or more distinct nuclear genomes, each with its own independent evolutionary history, but whose genetic behavior resembles that of diploids. Amphidiploidy has important evolutionary consequences in wheat. Since the beginning of this century different methods have been employed to identify the diploid donors of the coexisting genomes in the polyploids. To date, several of the genomic donors have been identified, and the search for the others has been narrowed down considerably. Molecular methodologies that are being increasingly used in studies aimed at reconstructing the evolutionary history of wheat species and their wild relatives have resolved many of the phylogenetic relationships among the various taxa.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cbab
                Crop Breeding and Applied Biotechnology
                Crop Breed. Appl. Biotechnol.
                Crop Breeding and Applied Biotechnology (Viçosa )
                1984-7033
                September 2010
                : 10
                : 3
                : 218-224
                Affiliations
                [1 ] Universidade Estadual de Maringá Brazil
                [2 ] Cooperativa Central de Pesquisa Agrícola Brazil
                Article
                S1984-70332010000300006
                10.1590/S1984-70332010000300006
                af043235-e390-4396-a85b-9a1a8847e0b1

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

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1984-7033&lng=en
                Categories
                AGRONOMY
                BIOTECHNOLOGY & APPLIED MICROBIOLOGY

                Biotechnology,Horticulture
                Triticum,seeds,dormancy,pre-harvest sprouting,sementes,dormência,germinação na espiga

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