한국식물병리학회지 (Korean Journal Plant Pathology)
- 제10권1호
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- Pages.29-33
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- 1994
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- 0256-8608(pISSN)
오이덩굴쪼김병의 교차보호에 관한 연구 III. 비병원성균의 선발 및 온실에서의 교차보호 효과
Studies on Cross Protection of Fusarium wilt of Cucumber III. Selection of Nonpathogenic Isolates and Their Protective Effects in the Greenhouse
초록
One hundred fifty four out of 262 isolates of Fusarium oxysporum obtained from healthy plant tissues of various crops and their rhizosphere soil were found to be nonpathogenic to cucumber plants. The nonpathogenic isolates were frequently found from sesame plant tissues and rhizosphere soil, but less from healthy plant tissues of cucumber and water melon. When the 154 nonpathogenic isolates were preinoculated into cucumber seedlings, and then challenge-inoculated with Fusarium wilt pathogen, 21 isolates protected effectively cucumber plants from Fusarium wilt infections. A year later, 9 out of 21 isolates fully sustained their protective effect. Among 9 isolates showing good protective effects, 7 were isolates from cucumber plants. These 9 isolates, except 1 isolate, were not pathogenic to water melon, chinese melon, tomato and sesame.