Fig. 1. Number of colonial bentgrass x creeping bentgrass interspecific hybrid lines exhibiting significantly (P < 0.05) less disease than their creeping bentgrass parent at each rating date in 2001. At 18 and 32 d after inoculation there were no hybrid progeny with significantly less disease than the creeping bentgrass parent 5061. At 69 and 76 d after inoculation there were no hybrid progeny with significantly less disease than the creeping bentgrass parent 4475.