Distribution and Ecology of Pythium Species in Japan

Abstract

Distribution and ecology of Pythium species in Japan were discussed on the basis of data obtained by assaying 80 plant root samples and 263 soil samples collected in various districs in Japan during 1968-1984. Pythium cultures were obtained from plant roots by placing washed tissue pieces on plain water agar plates and single hyphal tips from the fungal growth were cut and transferred for further cultural works. 本文所討論之日本產Pythium spp. 之分佈及生態是1968~1984年間由日本各地採取80種植株根部及263種土壤樣品分離所得之試驗結果。植株根部組織經洗淨後置於水瓊脂平板上，由長出之Pythium spp. 之菌絲尖端移植培養後供試。以修正過的Waksman之直接接種法，或是用胡瓜種子等供做土壤分離Pythium spp. 用。