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Genetics and Molecular Biology

Print version ISSN 1415-4757

Abstract

TOMAZ, Juarez Pires; MODA-CIRINO, Vânia; FONSECA JUNIOR, Nelson da Silva  and  RUAS, Paulo Maurício. Genetic control of orange hilum corona of carioca beans (Phaseolus vulgaris). Genet. Mol. Biol. [online]. 2007, vol.30, n.3, pp. 594-598. ISSN 1415-4757.  http://dx.doi.org/10.1590/S1415-47572007000400016.

The purpose of this research was to elucidate the genetic control of orange corona color in carioca common beans (Phaseolus vulgaris). We made four crosses between carioca group cultivars that differed in respect to the presence or absence of an orange hilum corona color. The F2, F3, F1BC11, F1BC21, F2BC11 and F2BC21 phenotypic segregations were evaluated with a chi-square test which fitted with the hypothesis that one gene with a dominant allele is responsible for the orange corona color. All generations resulting from the four different crosses showed segregation patterns which agreed with the expected proportions. Our results show that the dominant G allele controls orange corona color in the carioca bean group.

Keywords : carioca bean group; corona color; G locus; genetic inheritance.

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