茶轮斑病病原菌Pestalotiopsis trachicarpicola的生物学特性  

Biological Characteristics of Pestalotiopsis trachicarpicola,a Pathogen of Tea Gray Blight

作　　者：张欣 卢声洁 程宇豪 刘思睿 王坤英 赵兴丽 罗林丽 周玉锋[1] ZHANG Xin;LU Shengjie;CHENG Yuhao;LIU Sirui;WANG Kunying;ZHAO Xingli;LUO Linli;ZHOU Yufeng(Institute of Biotechnology,Guizhou Academy of Agricultural Sciences,Guiyang,Guizhou 550006;College of Tea,Guizhou University,Guiyang,Guizhou 550025;Institute of Tea,Guizhou Academy of Agricultural Sciences,Guiyang,Guizhou 550006,China)

机构地区：[1]贵州省农业科学院生物技术研究所,贵州贵阳550006 [2]贵州大学茶学院,贵州贵阳550025 [3]贵州省农业科学院茶叶研究所,贵州贵阳550006

出　　处：《贵州农业科学》2021年第1期38-43,共6页Guizhou Agricultural Sciences

基　　金：国家现代农业(茶叶)产业技术体系建设专项资金项目(CARS-19);贵州省科技计划项目“贵州茶园化肥农药减施及夏秋茶精深加工增效科技支撑行动”[黔科合平台人才(2017)5717];国家重点研发计划项目子项目“贵州茶园化肥农药减施增效技术集成与示范”(2016YFD0200906);贵州省农业科学院高价值专利培育项目“茶园主要病虫无害化治理技术研究”[黔农科院专利培计(2018)01]。

摘　　要：【目的】探明茶轮斑病病原菌Pestalotiopsis trachicarpicola的生物学特性,为茶轮斑病防治药剂的筛选和田间综合防治措施的制定提供科学依据。【方法】采用单因素试验系统研究茶轮斑病病原菌Pestalotiopsis trachicarpicola生长的最适温度、pH、培养基和碳氮源。【结果】菌株SQ-20-1的最适生长培养基为PDA培养基,其次为OA培养基;碳源以乳糖,氮源以L-丙氨酸对菌丝生长最佳;菌株在19~28℃下均能生长,最适生长温度为25℃;菌株在pH 6~11均能生长,pH为6时生长速度最快。【Objective】The biological characteristics of Pestalotiopsis trachicarpicola,a pathogen of tea gray blight is explored,which is to provide the scientific basis for screening pesticide against tea gray blight and formulating measures for field comprehensive control.【Method】A single factor experiment is employed to study the optimum temperature,pH,medium,carbon and nitrogen source for the growth of P.trachicarpicola.【Result】The optimum growth medium for strain SQ-20-1 is PDA medium,followed by OA medium.Lactose and L-alanine are most beneficial to mycelium growth as carbon source and nitrogen source.The strain can grow under 19-28℃and the optimum growth temperature is at 25℃.The strain can grow at pH 6-11,and the fastest growth rate is at pH 6.

关 键 词：茶轮斑病 棕榈拟盘多毛孢 生物学特性 

分 类 号：S435.711[农业科学—农业昆虫与害虫防治]