腹状镰刀菌引起的橡胶树基腐病的分离鉴定  

Isolation and identification of Rubber tree collar rot caused by Fusarium venfricosum

作　　者：蒋桂芝[1] 王勇芳[1] 周明[1] 李国华[1] 

机构地区：[1]云南省热带作物科学研究所/国家天然橡胶产业技术体系西双版纳综合试验站,云南景洪666100

出　　处：《广东农业科学》2014年第4期100-101,112,F0002,共4页Guangdong Agricultural Sciences

基　　金：云南省科技创新强省计划项目(2009AB001);国家科技支撑计划项目(2011BAD30B01);国家天然橡胶产业技术体系西双版纳综合试验站(nynytx-34-zd5)

摘　　要：橡胶树因基部腐烂死亡,经对其病原菌的分离、致病性测定,根据病原菌菌落形态特征,鉴定病原菌为镰刀菌属腹状镰刀菌（Fusarium venfricosum）.该病菌的适宜生长温度为10～40℃,最适生长温度为30℃,在40℃以上或10℃以下,菌丝的生长受到抑制.导致这次病害发生的主要原因是雨季积水.Collar rot caused the death of Hevea rubber. In order to elucidate the causal agent of Collar rot and its taxonomic status, the causal bacterium was isolated and characterized with the pathogenicity test, morphology, culture feature observation, and biological characteristics test. The results indicated that the causal agent belonged to Fuarium venfricosum. The pathogenic fungus could grow at temperatures ranging from 10℃ to 40℃, and the most suitable temperature was 30℃. When above 40℃ or below 10℃, the growth of mycelium was inhibited. The accumulating water in wet season was the main reason for occurrence of this disease.

关 键 词：橡胶树 病害 基腐 镰刀菌 

分 类 号：S794.107[农业科学—林木遗传育种]