道真玄参黑斑病病原鉴定及杀菌剂筛选

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英文篇名：Identification of and effective fungicide for the black spot,Alternaria alternata on Scrophularia ningpoensis in Daozhen County,Guzhou Province 作者：陈婧 ; 桑维钧 英文作者：CHEN Jing;SANG Wei-jun;College of Agriculture,Guizhou University; 关键词：道真 ; 玄参 ; 黑斑病 ; 链格孢 ; 杀菌剂 ; 毒力测定 英文关键词：Daozhen;;Scrophularia;;black spot;;Alternaria;;fungicide;;determination 中文刊名：SDNS 英文刊名：Journal of Mountain Agriculture and Biology 机构：贵州大学农学院; 出版日期：2015-08-28 出版单位：山地农业生物学报 年：2015 期：v.34;No.145 基金：道真县玄参主要病虫害调查与防治技术研究[道科中药合2012-06] 语种：中文; 页：SDNS201504018 页数：3 CN：04 ISSN：52-5013/S 分类号：89-91

摘要

近年,贵州道真县玄参(Scrophularia ningpoensis Hemsl.)种植中黑斑病危害严重。观察罹病玄参植株病症和病灶分离菌株的形态,确定该病原菌为链格孢属(Alternaria sp.)真菌。通过形态学比较和基于r DNA-ITS分子系统学分析,终确定致病菌即为链格孢菌Alternaria alternata。室内杀菌剂抑菌实验结果显示,丁子香酚对该病原菌抑制效果最佳。
        In recent years,Scrophularia ningpoensis Hemsl. was severely damaged by a disease in Daozhen,Guizhou province. Based on the observations of symptoms and morphology of lesion isolates,the diseases were believed to be caused by Alternaria sp. Through comparative morphological study and systematic analysis of r DNA- ITS sequence data,the pathogens have finally been identified as Alternaria alternata( Fr.)Keissl. The results from indoor experiments indicate that the antimicrobial fungicide,eugenol,is the best inhabitant agent against this pathogen.

引文

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