双荚槐白粉病病原菌研究  

Study on Powdery Mildew of Cassia bicapsularis Caused by Oidium crotalariae

作　　者：赵桂华[1] 席刚俊[1] 

机构地区：[1]江苏农林职业技术学院,江苏句容212400

出　　处：《西部林业科学》2013年第2期1-7,共7页Journal of West China Forestry Science

基　　金：山东省科技发展计划项目(No.2010GNC10928);国家自然科学基金(No.31170605)

摘　　要：双荚槐是从国外引入我国长江三角洲地区的园林绿化木本植物,其植株在9月下旬至次年1月上旬会发生严重的白粉病,经连续4年的野外观察研究表明,该病由野百合粉孢引起,在江苏句容地区不产生有性世代。该项研究系统地报道了双荚槐白粉病的症状,病原菌的形态学特征,分生孢子的萌发特性,并进行了致病性试验及其有性世代的观察。而首次报道了双荚槐为野百合粉孢的新寄主植物。对此真菌的研究也为我国之首报。Cassia bicapsularis is an introduced ornamental shrub in the Yangtze River Delta area. Severe powdery mildew occurred on C. bicapsularis from late September to first ten days of January in next year. Based on continu- ous field observation and study of 4 years, it was found that the powdery mildew was caused by Oidium crotalariae. This pathogen did not develop teleomorph under field observation in the last four years on Jurong area of Jiangsu province. The present study systematically illustrated the symptoms of the disease, the morphological characteristics of the pathogen, the germination of conidia, the pathogenicity test was conducted and the sexual generation was ob- served. It is the first report that Cassia bicapsularis is the host plant of Oidium crotalariae, it is also the first study report in China on the study of this fungi.

关 键 词：双荚槐 白粉病 病原菌 野百合粉孢 

分 类 号：S763[农业科学—森林保护学]