摘要
目的：通过调查甘肃省大黄主产区大黄病害种类及其特性，为病害综合防治提供理论依据。方法：田间调查和室内分离鉴定相结合。结果和讨论：共发现真菌性病害8种，分别为叶黑粉病Thecaphora schwarzmaniana、斑枯病Septoria sp．、锈病Puccinia rhei-palmati、轮纹病Ascochyta rhei、叶点霉灰斑病Phyllostica rhei、白粉病Erysiphe polygoni、灰霉病Botrytis sp．、根腐病Fusarium oxysporiums、1种病毒病（毒源待定）。黑粉病发病率为14％～26％，为害严重，急待解决。白粉病、灰霉病为国内首次报道。
Objective： To investigate diseases occurring in Rheum palmatum in Gansu province and identify pathogen. Method ： Field survey in the main R. palmatum producing area and the pathogens were identified on the base of morphology. Result： Eight fungal diseases have been found after disease surveys on R. palmatum in Gansu province from 2004 to 2007. They were leaf smut （ Thecaphora schwarzmaniana ）, leaf spot （ Septoria sp. ）, rust （ Puccinia rheipalmati ）, ring spot （Ascochyta rhei ）, powdery mildew （Erysiphe polygoni. ） , grey mold（Botrytis sp. ）, root rot（ Fusarium oxyxporium）and a virus disease. Conclusion： Leaf smut, a severe disease with the incidence of 14%-26% , is the urgent problem waiting to be solved effectively. Powdery mildew and grey mold were reported for the first time in China.
出处
《中国中药杂志》
CAS
CSCD
北大核心
2009年第8期953-956,共4页
China Journal of Chinese Materia Medica
基金
国家“十一五”科技支撑计划重点项目(2007BA137B01)
关键词
大黄
病害调查
病原鉴定
Rheum palmatum
disease survey
pathogen identification
