香蕉枯萎病拮抗细菌对4种土传植物病原真菌的抑制作用Effect of Antagonistic Bacteria Inhibiting Fusarium oxysporum on Four Soil-born Plant Pathogens
游春平;肖爱萍;甄俊杰;傅志岸;
摘要(Abstract)：
测定了从果园土壤中分离的4株香蕉枯萎病拮抗细菌对粉蕉根腐病菌(Pythiumsp.)、辣椒白绢病菌(Sclerotium rolfsii)、节瓜枯萎病菌(Fusarium oxysporumf.sp.binincasae)的抑菌效果以及对香蕉枯萎病的防治效果。结果表明,3种拮抗细菌bio-B3、bio-d4和bio-P对4种病菌的生长具有显著的抑制作用,产生明显的抑菌带,拮抗细菌bio-d5对辣椒白绢病菌不产生抑菌带,但对其他3种病菌均产生明显的抑菌带;4种拮抗菌株对节瓜枯萎病菌和香蕉枯萎病菌孢子萌发具有显著的抑制作用,其发酵原液对病菌孢子萌发的抑制率较高,抑制率为76.4%~100%,随着稀释倍数的增加,其抑制效果逐渐降低;拮抗细菌bio-B3、bio-d4b、io-d5发酵液1002、00和300倍稀释液对香蕉枯萎病的防治效果为53.3%~80.2%,它们之间无显著性差异,但显著大于bio-P和恶霉灵的防治效果。
关键词(KeyWords)： 拮抗细菌;土传植物病原真菌;香蕉枯萎病菌;防治效果
基金项目(Foundation): 广东省自然科学基金资助项目(05002891)
作者(Author): 游春平;肖爱萍;甄俊杰;傅志岸;
Email:
DOI: 10.13989/j.cnki.0517-6611.2006.17.073
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