Performance of common bean families from cross between of andean and mesoamerica lines on grain yield and resistance to Phaeoisariopsis griseola

In some regions of Minas Gerais State, prevalent physiological races of Phaeoisariopsis griseola (Sacc.) Fern infect mainly cultivars of Mesoamerican origin, but the Andean cultivars are resistant. The introduction of alleles for resistance of Andean cultivars in Mesoamerican cultivars is a good strategy to obtain adapted cultivars with resistance to this disease. With this purpose, the cross between ESAL 550 (Andean group and resistant to angular leaf spot) and Carioca-MG (Mesoamerican group and susceptible to angular leaf spot) was performed. After evaluation of the segregant families in generations F-2:3, F-2:4 and F-2:5, some lines with high resistance to P. griseola and grain type far from market standard were identified.