抄録
Three strains of Colletotrichum gloeosporioides and three strains of C. acutatum were tested concerning their ability to give rise to chlorate-resistant nitrate non-utilizing mutants (nit mutants) when they were cultured on a minimal medium containing 1.5% KClO3. All strains gave rise to mutants that could be placed in phenotypes of nit mutants. C. gloeosporioides mainly gave rise to nit1. While C. acutatum gave rise to nit1 and Nit3. All six strains did not give rise to nit2. Three nit mutants tested were pathogenic to strawberry.