桉树焦枯病菌(Calonectria pseudoreteaudii)生物学特性测定  

Biological characteristics of Calonectria pseudoreteaudii associated with Cylindrocladium leaf blight

作　　者：陈全助 陈慧洁[2] 郭文硕[2] 叶小真[3] 沈金清 

机构地区：[1]三明市森林病虫害防治检疫站,福建三明365000 [2]福建农林大学林学院,福建福州350002 [3]福建农林大学金山学院,福建福州350002 [4]将乐县林业局,福建将乐353300

出　　处：《福建林学院学报》2014年第4期328-332,共5页Journal of Fujian College of Forestry

基　　金：中央财政支持地方专项森林保护科研平台建设项目(6213C0108);福建省财政厅科研专项桉树病害防治技术研究与推广(社会公益研究)项目(K8112004A);福建省教育厅科研项目(JA13372);福建省自然科学基金项目(2013J01074)

摘　　要：丽赤壳属多数种是桉树焦枯病(Cylindrocladium leaf blight)重要致病菌,掌握病原菌生物学特性有助于从病原角度了解病害发生发展,科学指导防治。对桉树焦枯病致病菌株Calonectria pseudoreteaudii生物学特性进行测定。结果表明:该菌株菌丝生长以燕麦片琼脂培养基生长最快,最适温度为24-26℃,最适pH值为7.0,而光照条件不影响菌丝生长;菌株产孢最适温度为25℃,最适pH值为6.0,以光照、PDA培养基产孢量较高;分生孢子萌发与相对湿度成正相关,最适温度为28℃,最适pH值为6.0,黑暗有助于孢子萌发。Absrt act：Calonectria spp., particularly in their Cylindrocladium anamorph form, are well-known pathogens associated with Cylin-drocladium leaf blight.For the purpose of understanding the biological characteristics of Ca.pseudoreteaudii YA5j2 and guiding how to control this disease, biological characteristics of this isolate were determined.The optimal conditions for mycelium growth were oatmeal agar medium with pH 7.0 cultivated at 24-26℃, and illuminance had no significant effect on hyphae growth.The suitable conditions for spore production were potato dextrose agar medium with pH 6.0 cultivated at 25℃in the light.Conidium germination had a positive correlation with relative humidity, and conidium under the circumstance with high humidity, pH 6.0, temperature at 28 ℃, and without illumination contributed to germination.

关 键 词：桉树 焦枯病 病原菌 生物学特性 

分 类 号：S763.15[农业科学—森林保护学]