防病促生枯萎病拮抗菌“98-I”对4种枯萎病防治效果研究

The prevention and control effects of the growth-promotion antagonistic bacterium“98-I”on 4 Fusarium wilts

摘要: 经8年系统试验研究从330个细菌菌株中筛选出1株防病促生枯萎病拮抗菌“984”，经鉴定属蜡质芽孢杆菌。该菌对黄瓜枯萎病、西瓜枯萎病、青椒枯萎病和番茄枯萎病4种土传病害均有显著防治效果，其平皿孢子萌发抑制率分别为79.2％、75.1％、72.3％和95.7％，且该菌对多种蔬菜有促生和促进种子发芽功效。

Abstract: A growth-promoting antagonistic bacteria strain “98-I”against Fusarium wilt，selected from 330 strains and identified as Bacillus cereus．can effectively inhibit the soil-born Fusarium pathogens．It presents a notable efficiency in controlling 4 Fusarium wilt diseases including cucumber Fusarium wilt(Fusarium oxysporum f．sp．cucumerinum)，wa-termelon Fusarium wilt(F．O．f．sp．ni'oeum)，paprica Fusarium wilt(F．O．f．sp．Vasinfectum )，and tomato Fusarium wilt(F．0.f．sp．1ycopersici)with the corresponding spore germination inhibition rate of 79.2％，75.1％，72.3％ and 95.7％ by petri disk test．The bacterium can also promote the vegetable growth and seeds germ ination．