INHERITANCE OF ANTHRACNOSE RESISTANCE IN COMMON BEAN GENOTYPES PI-207262 AND AB-136

Bean (Phaseolus vulgaris)lines P.I. 207262 and AB 136, both resistant to delta and kappa races of Colletotrichum lindemuthianum, were crosse d with Michelite, Dark Red Kidney, and Ferry Marrow, susceptible to bo th races, and with Cornell 49-242, resistant to delta and susceptible to kappa. F-1 and F-2 reactions demonstrated that P.I. 207262 carries duplicate dominant genes for resistance to the delta race; AB 136 carr ies a dominant gene. These resistance genes are independent of the Are gene from Cornell 49-242. With respect to the kappa race, F-1 and F-2 data showed that the resistance controlled by P.I. 207262 and by AB 1 36 depends on a single dominant gene. Complementary factors were invol ved with AB 136 resistance to the delta race and with P.I. 207262 resi stance to kappa.