Population structure and phenotypic variation of from dry bean () in the United States.

The ascomycete pathogen is a necrotrophic pathogen on over 400 known host plants, and is the causal agent of white mold on dry bean. Currently, there are no known cultivars of dry bean with complete resistance to white mold. For more than 20 years, bean breeders have been using white mold screening nurseries (wmn) with natural populations of to screen new cultivars for resistance.