小叶黄杨叶斑病菌YC06生物学特性与杀菌剂筛选  

Biological Characteristics of Leaf Spot Pathogen of Buxus microphylla and Screening of Germicide

作　　者：邵阳[1] 刘秋[1] 胡英畅[1] 闫建芳[1] 齐小辉[1] 

机构地区：[1]大连民族学院,大连116600

出　　处：《东北林业大学学报》2011年第7期138-140,共3页Journal of Northeast Forestry University

基　　金：国家自然科学基金(30671398);NSFC-KOSEF国际合作研究项目(30711140389);辽宁省自然科学基金(20062189);辽宁省教育厅项目(2004F079);大连市青年基金(2005J22JH040)

摘　　要：叶点霉属(Phyllosticta)是球壳孢目中的重要属,其中很多种是引起植物叶、茎和根部病害的重要病原菌。小叶黄杨叶斑病是由叶点霉属真菌引起的病害。对该病害病原菌的生物学特性与药剂抑菌效果进行了研究。结果表明,小叶黄杨叶斑病菌YC06适宜生长的pH值范围广泛,麦芽糖是最佳碳源,天门冬酰胺是最佳氮源,该菌在连续光照条件下生长较好,在0.2%蔗糖溶液中孢子萌发率最高。通过对11种农药的EC50的比较,20%断灰对菌丝抑制效果最好,50%特富灵次之。An experiment was conducted to study the biological characteristics of the pathogenic fungi causing leaf spot disease of Buxus microphylla. The germicides having a good antifungal effect on the leaf spot pathogen were screened. Result show that the strain YC06 causing leaf spot disease of B. microphylla grow well in a wide range of pH. Maltose is the best carbon source and asparagine is the best nitrogen source. The strain YC06 grows better under continuous light. The spore germination rate was the highest in 0.2 percent sucrose solution. Among 12 fungicides, Tefuling at the concentration of 50% showed the best effect and 20% Duanhui showed a better effect on the control of leaf spot disease of B. microphylla.

关 键 词：小叶黄杨 叶斑病 生物学特性 杀菌剂 

分 类 号：Q945.8[农业科学—植物病理学]