木瓜斑点落叶病菌生物学特性及室内药剂筛选  

Biological Characterization and Screening of Pesticides on Chaenomeles sinensis Spot Leaf Cast Disease Pathogen

作　　者：傅本重[1,2] 陈锐[2] 魏蜜[1] 王立华[1] 李国元[1] 王有宁[1] 章爱群[1] 王晓芳[3] 

机构地区：[1]湖北工程学院生命科学技术学院/特色果蔬质量安全控制湖北省重点实验室/生物质资源转化利用湖北省协同创新中心,湖北孝感432000 [2]西南林业大学林学院,昆明650224 [3]湖北省农业科学院农业经济技术研究所,武汉430064

出　　处：《湖北农业科学》2016年第1期86-89,共4页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(31200488;31340057);云南省应用基础研究计划项目(2011FB066);湖北省自然科学基金项目(2013CFC004);湖北工程学院创新团队项目(T2014001)

摘　　要：对木瓜(Chaenomeles sinensis)斑点落叶病致病菌冠盘二胞(Marssonina coronaria)的生物学特性及其室内药剂防治进行了研究。结果表明,病菌生长的最适培养基为PDA,在p H为7.0、碳源和氮源分别为可溶性淀粉和尿素、光照条件光/暗为12 h/12 h的条件下生长最好;菌丝致死温度为45℃。在供试的9种药剂中,多菌灵的抑菌效果最好,其EC50为8.78 mg/L,在浓度1.0 mg/L条件下,相对抑菌率达85.0%,代森锰锌效果最差,在浓度1.67 mg/L条件下,相对抑菌率仅为40.8%。The biological characteristics and suitable fungicide for the pathogen Marssonina coronaria of Chaenomeles sinensis spot leaf cast disease were studied. The effects of different nutrition and environmental conditions on the mycelium, as well as 9 pesticides against the pathogen were investigated in this paper. The results indicated that the pathogen mycelium were grown well in PDA with pH7.0, soluble starch and urea were suitable carbon and nitrogen resource respectively. The lethal temperature was 45 ℃, and the light-dark alternation 12 h/12 h was benefit for mycelial growth. Among the 9 tested pesticides, the most effective agent was carbendazol, which EC50 was 8.78 mg/L, the relative inhibition rate was 85% under the recommended concentration 1.0 mg/L. Mancozeb was the least effective agent, the relative inhibition rate was 40.8% under the recommended concentration 1.67 mg/L.

关 键 词：木瓜(Chaenomeles sinensis) 斑点落叶病 生物学特性 药剂筛选 

分 类 号：S436.5[农业科学—农业昆虫与害虫防治]