Study on Pathogen and Bio-control of Dampingoff Disease in Pseudostellaria heterophylla in Qiandongnan Prefecture of Guizhou Province  

贵州省黔东南州太子参立枯病的病害分析及生防初探（英文）

作　　者：张国辉[1] 王龙[2] 任永权[1] 贺定翔 兰才武 范成明[4] 陈宇红[4] 胡赞民[4] 

机构地区：[1]凯里学院环境与生命科学分院,贵州凯里556011 [2]中国科学院微生物研究所,北京100101 [3]贵州昌昊中药发展有限公司,贵州凯里556000 [4]中国科学院遗传与发育生物学研究所,北京1001012

出　　处：《Agricultural Science & Technology》2015年第10期2304-2308,共5页农业科学与技术（英文版）

基　　金：Supported by National Natural Science Foundation of China(31201160);Joint Fund of Science and Technology Department of Guizhou Province(QKH-J-LKK[2013]11);Agricultural and Forestry Diseases and Pests Identification and Control Science and Technology Innovation Team in Southeast Guizhou(QJHRCTD[2014]48);Excellent Scientific Research and Innovation Team Project of Science and Technology Department of Guizhou Province(QJHRCTD[2013]26)~~

摘　　要：Fungal diseases occur seriously in Pseudostellaria heterophylla in Qian- dongnan Prefecture of Guizhou Province from March to May every year. By field in- vestigation, tissue isolation and microscopic identification, the main pathogen was iden- tified as Rhizoctonia solanL the pathogen of damping-off disease. At the same time, Alternaria alternate was also isolated from the sampled diseased soil, and it has pathogenicity to Pseudostellaria heterophylla seedlings. The bio-control test showed that GH18 strain （Bacillus spp.） had significant inhibitory effects on Rhizoctonia solani and Alternaria alternate.贵州省黔东南州太子参（Radix pseudostellariae）在每年3~5月份都会发生严重真菌病害,经实地调查、组织分离和显微鉴定,得到主要致病菌为立枯丝核菌（Rhizoctonia solani）,其导致的病害为太子参立枯病。同时,还在病土中分离纯化得到对太子参种苗有致病能力的病原菌互隔文链孢霉（Alternariaalternate）。生防试验结果表明,芽孢杆菌（Bacillus spp.）GH18菌株对病原菌立枯丝核菌（Rhizoctoniasolani）和病原菌互隔文链孢霉（Alternaria alternate）的抑菌效果显著。

关 键 词：Pseudostellaria heterophylla Damping-off disease Rhizoctonia solani Alternaria alternate Bacillus spp. 

分 类 号：S435.675[农业科学—农业昆虫与害虫防治]