The Pathogenicity Fusarium oxysporum f. sp. radicis-lycopersici to Several Plants

Thirty one species from 10 botanical families were inoculated by root-dipping and planting in soil infested with 4 isolates of Fusarium oxysporum f. sp. radicis-lycopersici. Random sections from the roots and crowns of the 31 species were surface-sterilized and placed on Komada's Fusarium-selective medium. The colonies that formed on the medium were identified using a tomato seeding test as F. oxysporum f. sp. radicis-lycopersici. Ten cultivars of tomato except'Zuiken'and'Mato', Milk vetch, kidney bean, spinach and beet were highly susceptible. Eggplant, melon'Earl's knight natsu', broad bean, red clover and white clover were slightly susceptible. Growth of the roots was not good, and most of them were discolored. Eighteen cultivars from the Cruciferae, Umbelliferae, Compositae, Liliaceae and Poaceae were symptomless. But, F. oxysporum was reisolated from the roots of wheat, barley, radish, Chinese cabbage and so on, and identified as F. oxysporum f. sp. radicis-lycopersici with use of a tomato seedling test.