瑞拉菌素产生菌S-5120菌株防治黄瓜霜霉病害的研究初报

Studies on the effect of zuelaemycin producing actinomycetes strain S-5120 on downy mildew of cucumber

经黄瓜霜霉病孢子萌发试验和离体叶片抑菌试验表明,瑞拉菌素产生菌S-5120菌株和瑞拉菌素均对黄瓜霜霉病有较强抑制作用.温室防病试验表明,瑞拉菌素产生菌S-5120发酵液对黄瓜霜霉病有明显的保护和治疗作用.相对保护效果达75.17%;治疗效果达69.69%,且高于农抗-120的相对防效62.65%.

S-5120 strain and zuelaemycin with strong antagonistic against Psudoperonospora cubensis Berk.et Curt. were tested by using an spore-germination method and an method on detached-leaves.The protective effect and therapeutic effect of S-5120 strain on downy mildew of cucumber were tested in greenhouse.Respectively the protective effect of S-5120 strain was 75.17%,and the therapeutic effect was (69.69%) which was higher than that of 2% Nongkang-120 with 62.65%.