变叶木新病害白粉病病原菌生物学特性测定  

Biological Characteristics of the Pathogen of Codiaeum variegatum Powdery Mildew

作　　者：周芳雪 杨永利[1] 韦运谢[1] 张恺莉 刘娅楠[1] 刘晓妹[1] 

机构地区：[1]海南大学环境与植物保护学院/热带作物种质资源保护与开发利用教育部重点实验室,海口570228

出　　处：《湖北农业科学》2016年第21期5548-5550,共3页Hubei Agricultural Sciences

基　　金：中西部高校项目(ZXBJH-XK004;ZXBJH-XK005;MWECSP-RT08)

摘　　要：本研究测定了不同条件对变叶木[Codiaeum variegatum BI var.pictum（Lodd.）Muen]白粉病分生孢子萌发的影响。结果表明,分生孢子萌发的适宜温度为21-24℃,最适温度为24℃;最适相对湿度为80%;在p H为8时,萌发率最高;光照对分生孢子萌发无影响;葡萄糖、氯化铵有利于分生孢子的萌发;分生孢子的致死条件为43℃10 min。可见变叶木白粉病菌喜好温暖、潮湿、偏碱、富含营养的环境。The effects of different conditions on the conidial germination of Oidium neolycopersici were studied. The results showed that,the effective temperature for conidial germination was in the range of 21-24 ℃,and the optimum temperature was24 ℃. The optimum relative humidity was 80%. The percentage of conidial germination reached the highest at p H 8.0. Light had no effect on conidial germination. Glucose and ammonium chloride were better for the conidial germination. Lethal temperature of conidia was 43 ℃ for 10 min. Obviously the warm,humid,weak alkali,and nutritious environment was favourite for pathogen.

关 键 词：变叶木[Codiaeum variegatum BI var.pictum(Lodd.)Muen] 白粉病 新番茄粉孢菌 生物学特性 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治]