Desempenho de familias do cruzamento entre linhagens de feijões andinos e mesoamericanos em produtividade e resistência a Phaeoisariopsis griseola

Abstract

In some regions of Minas Gerais State, prevalent physiological races of Phaeoisariopsis griseola (Sacc.) Ferr. 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 F2:3, F2:4 and F2:5, some lines with high resistance to P. griseola and grain type far from market standard were identified.