Cultural Characteristics of a Seedborne Fungus, Bipolaris spicifera Detected from Imported Grass Seeds into Korea

ABSTRACT

The study on the cultural characteristics of Bipolaris spicifera was conducted to provide with information for the identification, and inoculation studies, etc. B. spicifera grew well at 30~35degrees C and wide range of pH 5.0~9.0. However, the fungal growth was retarded at pH 4.0 and 10.0, respectively. Conidia were germinated with 70% at 30degrees C but maintained 50% germination even at 40degrees C, indicating that this pathogen could infect plants at relatively high temperature. The pathogen could not produce conidia under 24 hr fluorescent light condition for 7 days. In contrast, it produced many more conidia at 24 hr dark condition.