杜金池 程永雄 鄭安秀 林敬皓
Screening of Resistant Hybrid Lines and Biocontrol of Fusarium Wilt of Asparagus
C. C. Tu, Y. H. Cheng, A. H. Chang and H. G. Lin
1.A fusarial wilt nursery has been used for screening of asparagus hybrid lines and varieties since 1980. The initial results indicated that seven hybrid lines, namely L4, B11, J3, J5, J15, L2 and L3 were highly resistant to fusarial wilt.
2.The saprophytic isolate of F. oxysporum would not cause visible symptom on 9 common crops, including watermelon, sweet potato, sweet pepper, sorghum, corn, mungbean, tomato, peanut and carrot. However, there were about 10% isolation of saprophytic isolate from roots of same tested crops were found.
3.The biocontrol of asparagus Fusarium wilt by using antagonistic effects between saprophytic and pathogenic isolates of F. oxysporum in soil showed a promising result. An excellent control of the disease was obtained 60 days after treatment of saprophytic isolate into the pathogen-infested soil in the pot test.