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Inheritance of anthracnose resistance in common bean genotypes P.I. 207262 and AB 136
M.C. Gonçalves-VidigalI; Antônio A. CardosoII; Clibas VieiraII; Luiz S. SaraivaIII
IDepartamento de Agronomia, Universidade Estadual de Maringá, Av. Colombo 5790, 87020-900 Maringá, PR, Brasil. Send correspondence to M.C.G.-V.
IIDepartamento de Fitotecnia, Universidade Federal de Viçosa, 36571-000 Viçosa, MG, Brasil.
IIIDepartamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brasil.
ABSTRACT
Bean (Phaseolus vulgaris) lines P.I. 207262 and AB 136, both resistant to delta and kappa races of Colletotrichum lindemuthianum, were crossed with Michelite, Dark Red Kidney, and Perry Marrow, susceptible to both races, and with Cornell 49-242, resistant to delta and susceptible to kappa. F1 and F2 reactions demonstrated that P.I. 207262 carries duplicate dominant genes for resistance to the delta race; AB 136 carries a dominant gene. These resistance genes are independent of the Are gene from Cornell 49-242. With respect to the kappa race, F1 and F2 data showed that the resistance controlled by P.I. 207262 and by AB 136 depends on a single dominant gene. Complementary factors were involved with AB 136 resistance to the delta race and with P.I. 207262 resistance to kappa.
Keywords: anthracnose; resistance; bean.
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