魔芋软腐病菌致病条件与侵染途径研究  

Study on Infection Conditions and Pathogenicity of Konjac Soft Rot Bacteria

作　　者：何峰[1] 杨英[1] 张伟[1] 季家兴[1] 王雪迪[1] 余龙江[1] 

机构地区：[1]华中科技大学生命科学与技术学院,武汉430074

出　　处：《湖北农业科学》2011年第1期81-83,共3页Hubei Agricultural Sciences

基　　金：国家科技支撑计划项目(2007BAD73B02)

摘　　要：对魔芋软腐病菌的致病条件、侵染途径等方面进行了研究。结果表明,魔芋软腐病菌主要通过伤口侵染魔芋,当球茎顶芽及顶芽周围组织受损后,极易被软腐病菌感染,其发病率高达90%以上。其最适发病条件为温度25～30℃,湿度90%～95%,且在相同温度下湿度越大,其发病率越高。The infection pathways,conditions and mechanism of Konjac＇s soft rot disease were focused on.The result suggested that the wounded konjac was likely infected with Erwinia bacterium.Once the apical buds and the periphery of konjac were injured,Erwinia bacterium could esily infect the tissues and the incidence rate was higher 90%.In addition,the optimum temperature（25~30℃） and humidity（90%~95%） favored the infection of Erwinia bacterium.In the same temperature,the high humidity will lead to the high rate of disease incidence.

关 键 词：魔芋软腐病菌 伤口侵染 温度 湿度 

分 类 号：S435[农业科学—农业昆虫与害虫防治]