不同来源橡胶树多主棒孢病菌致病性及基础生物学特性的比较  

Biological Characteristics of Different Corynespora cassiicala of Hevea brasiliensis

作　　者：潘羡心[1] 彭建华[1] 刘先宝[1] 蔡吉苗[1] 高宏华[1] 黄贵修[1] 

机构地区：[1]中国热带农业科学院环境与植物保护研究所海南省热带农业有害生物检测监控重点实验室,海南儋州571737

出　　处：《热带作物学报》2008年第4期494-500,共7页Chinese Journal of Tropical Crops

基　　金：科技部国家科技支撑计划项目(2007BAD48B04);科技部农业科技成果转化资金项目(2006GB23260377);农业部公益行业科研专项(nyhyzx07-033-2);中央级公益性科研院所基本科研业务费专项(2007hzs1J003)资助

摘　　要：对已在我国海南、云南、广西等省区橡胶树上发生为害的3株多主棒孢病菌(Corynespora cassiicola)和来自印度的橡胶树多主棒孢病菌进行了致病性及基础生物学特性的比较研究。结果表明,印度HCcYD01菌株的致病力最强;基础生物学特性测定结果表明,参试的3株国内菌株与印度菌株间除分生孢子大小、孢子萌发和致死温度相似外,在菌落形态、最适培养基、光照条件、碳氮源利用、最适生长温度和pH等方面存在一定差异。由多主棒孢引起的橡胶树棒孢霉落叶病业已成为影响天然橡胶产量的主要限制因素,本研究旨在了解我国橡胶树棒孢霉落叶病的最初发病病原,为该病发生规律的研究及防控措施的制定提供理论依据。Corynespora leaf fall dis ease of rubber tree caused by Corynespora cassiicola has become a main limiting factor for production of natural rubber. The pathogenicity and biological characteristics of three Corynespora cassiicola isolates collected from Hainan, Yunnan and Guangxi provinces of China and another isolate from Indian were analyzed. The results show that the toxicity of HCcYD01 isolate from India is the strongest in pathogenicity. Observation of the biological characteristics shows that all the isolates either from China or India are similar in conidia size, spore lethal temperature and optimum spore germination temperature, and that isolates from China varies with that from India in colony form, optimum medium, light conditions, carbon and nitrogen resource, optimum growth temperature and pH.

关 键 词：橡胶树 多主棒孢病菌 生物学特性 

分 类 号：S763.150.2[农业科学—森林保护学]