Colony morphology and virulence of strain EW220, strain JNT1111, and derived sub-strains on pear fruit (P. bretschneideri cv. Huangguan). Strains EW220-64-T1, EW220-64-T2, and EW220-64-T3 were derived from EW220-64 in the pairing cultures of EW220/EW220-64. (A) Colony morphology in PDA medium (28 °C, 3 days); (B) pear fruits wound-inoculated with colonized plugs of tested strains and photographed at 4 dpi; (C) statistical analysis of the growth rate and the lesion size. The error bars indicate the standard deviations from different sample means. The letter indicates a significant difference at the p < 0.05 level of confidence based on a multiple range test.