Race Characterization of Brazilian Isolates ofColletotrichum lindemuthianumand Detection of Resistance to Anthracnose inPhaseolus vulgaris

Abstract

Nine races (alpha, delta, epsilon, zeta, eta, teta, kappa, lambda, and mu) of Colletotrichum lindemuthianum were identified from 201 bean isolates collected from 16 states in Brazil. Of the nine races, zeta, eta, teta, and mu were new races. The identification was based on a set of differential cultivars: Michelite, Aiguille Vert, Dark Red Kidney, Widusa, Imuna, BO 22, Sanilac, Cornell 49-242, Kaboon, TO, PI 207262, and Mexico 222. Seventy-two cultivars and breeding lines were tested for resistance to all of the races. The lines A 321, A 373, and A 387 and the cultivars AB 136, Evolutie, GO 2338, GO 3367, and TU were resistant to all races tested. Forty-nine sources of resistance to race alpha, 44 to delta, 52 to episolon, 53 to zeta, 56 to eta, 38 to theta, 32 to kappa, 42 to lambda, and 36 to mu were identified among the components of the germ plasm studied.