南方根结线虫、香蕉穿孔线虫和尖孢镰刀菌4号生理小种对巴西蕉致病力的测定  

Determination of virulence of Meloidogyne incognita, Radopholus similis and Fusarium oxysporum f. sp. cubense race 4 on banana

作　　者：符美英 肖彤斌 吴凤芝 曾向萍 陈绵才 

机构地区：[1]海南省农科院农业环境与植物保护研究所/海南省植物病虫害防控重点试验室,海南海口571100

出　　处：《广东农业科学》2014年第1期56-60,共5页Guangdong Agricultural Sciences

基　　金：海南省自然科学基金(312081);公益性行业(农业)科研专项(200903040);科技部"十二五"科技支撑计划项目(2012BAD19B06-07)

摘　　要：通过室内盆栽接种测试的方法,测定南方根结线虫(Meloidogyne incognita)、香蕉穿孔线虫(Radopholus similis)和尖孢镰刀菌4号生理小种(Fusarium oxysporum f.sp.cubense race 4)对巴西蕉的致病力。结果表明:3种病原微生物进行单独侵染和复合侵染均能抑制巴西蕉的生长,且复合侵染对巴西蕉的生长量影响更大;南方根结线虫单独侵染巴西蕉的根结指数要比复合侵染的高;香蕉穿孔线虫单独侵染巴西蕉的病情指数要比复合侵染的高;而尖孢镰刀菌4号生理小种与根结线虫和香蕉穿孔线虫同时侵染巴西蕉时香蕉枯萎病病情指数相对最高。The virulence of Meloidogyne incognita, Radopholus similis and Fusarium oxysporum f. sp. cubense race 4 on banana cuhivars （Musa AAA） in pot experiments was determined by inoculating in greenhouse. Results showed that single infection and complex infection of three kinds of pathogenic microorganism could inhibit the growth of banana, and the complex infection affected the growth of banana more. The root knot index was higher for single infection than complex infection of＂ M. incognita on banana, the disease index was higher for single infection than complex infection of R. similis on banana. The disease index of fusarium wilt was relatively high for the complex infection of three kinds of pathogenic microorganism.

关 键 词：香蕉 南方根结线虫 香蕉穿孔线虫 尖孢镰刀菌4号生理小种 单独侵染 复合侵染 致病力 

分 类 号：S432.45[农业科学—植物病理学] S668.1[农业科学—农业昆虫与害虫防治]