南方农业学报2011，Vol.42Issue(10)：1212-1216,5.
香蕉真菌性叶斑病病原种群结构季节性变化研究
Seasonal variation in population structure of banana mycotic leaf spot pathogen
摘要
Abstract
[Objective]The present work was carried out to study the seasonal variation in population structure of banana mycotic leaf spot pathogen in order to provide information for its control. [Method]The effects of fungal pathogens, causing mycotic leaf spot diseases, were investigated on annual growth of banana plantations at Jinling Township (Nanning) from June to October, 2009. Pathogens of leaf spot were examined and the population structure was analyzed during each period. [Result]At least nine fungal pathogens of mycotic leaf spots of banana were observed, amongst which, the Cordana musae was the major pathogen. The single-pathogen-induced banana leaf spots (SBLS) were predominant. The detection rate of SBLS was slightly higher and declined rapidly along with seasonal variations, with the peak rate (88.8%) detected on 15 August. The co-infected banana leaf spots (CBLS) with two or more fungal pathogens showed opposite trends compared to SBLS. Except for Altemaria musae and Pestalotiopsis menezesiana, seven other fungal pathogens were found to infect banana plants. The total detection rate of C. Musae increased with highest value was 92.8%, however it did not showed any distinct trend. [Conclusion]Seasonal variations were one of the major factors effecting fungal pathogen population dynamics associated with banana leaf spot diseases. The C. Musae, inducing SBLS, was predominant during the period of banana growth. It was recommended to control gray line disease induced by C. Musae during control of banana mycotic leaf spot.关键词
香蕉/叶斑病/病原种群/季节变化/香蕉暗双孢菌/复合侵染Key words
banana/ leaf spot disease/ pathogen populations/ seasonal variation/ Cordana musae/ complex infection分类
农业科技引用本文复制引用
林善海,黄思良,岑贞陆,覃丽萍,黎起秦,付岗..香蕉真菌性叶斑病病原种群结构季节性变化研究[J].南方农业学报,2011,42(10):1212-1216,5.基金项目
广西自然科学基金项目(桂科自0728071) （桂科自0728071）
