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Crop Breeding and Applied Biotechnology

On-line version ISSN 1984-7033


PEREIRA, Alisson Campos et al. Introgression of resistance to pathogens in common bean lines with the aid of molecular markers. Crop Breed. Appl. Biotechnol. [online]. 2013, vol.13, n.2, pp.120-126. ISSN 1984-7033.

Aiming to incorporate resistance to the anthracnose and angular leaf spot pathogens in the common bean lines BRSMG Talismã, VC8 and VC9, crosses were made between these lines and the line Rudá-R, donor of the alleles Phg1, Co-4, Co-10, which confer resistance to Pseudocercospora griseola and Colletotrichum lindemuthianum. After the crosses, the backcross populations were obtained, and the RC1F1 plants were inoculated with race 65 of C. lindemuthianum. The resistant plants were genotyped with the markers SCARH13, SCARY20 and SCARF10, linked to the alleles Phg1, Co-4 and Co-10, respectively. Based on the molecular data, 44 plants were selected. The progenies originating from multiplication of these plants were evaluated over three seasons for grain yield, plant architecture and grain aspects. Based on these considerations and molecular data, 13 promising progenies were selected for developing inbreds.

Keywords : Marker-assisted selection; Phaseolus vulgaris; anthracnose; angular leaf spot.

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