热带作物学报2023，Vol.44Issue(12)：2546-2557,12.DOI:10.3969/j.issn.1000-2561.2023.12.021
海南橡胶树炭疽病调查及喀斯特炭疽病菌的鉴定
Investigation of Colletotrichum sp.and Identification of C.karstii of Rubber Trees in Hainan
摘要
Abstract
Rubber tree(Hevea brasiliensis)is the only renewable resource among the four major industrial raw materials.The rubber tree anthracnose which infected by the Colletotrichum sp.is one of the most serious foliar disease of rubber production in China.In this study,we investigated the main rubber tree varieties(strains)and monitoring the occurrence and prevalence of anthracnose in Hainan province.It was found that PR107 and RRIM600 had the largest planting area,accounting for 51.06%(102 000 hm2)and 43.39%(86 700 hm2)respectively.The anthracnose of mature rubber planta-tions and value-added nurseries in Yangjiang Farm was occurred all year round,with the peak period from March to April;Therefore,the rubber tree planted in Hainan province was large,and the variety(strain)was single,so it was easy to break out and spread when the anthracnose was suitable.HCkHNQZ1736 isolated from the leaves of the rubber nurs-ery of Yangjiang Farm in Qiongzhong County,was identified as a new strain of Colletotrichum karstii,which had highly pathogenic to four main varieties of rubber tree,PR107,RRIM600,Reyan 7-33-97 and Dafeng 95.Studied on the results of carbendazim and prochloraz-manganese sensitivity test of HCkHNQZ1736 and MeCkYN1705 showed that the two strains had no resistance to prochloraz-manganese,while the EC50 was 0.0784 µg/mL and 0.0775 µg/mL respec-tively.However,HCkHNQZ1736 showed high resistance to carbendazim,at this time,the EC50 was 1107.2654 µg/mL,while MeCkYN1705 had only 0.0554 µg/mL.关键词
橡胶树炭疽病/病害调查/喀斯特炭疽菌/分子鉴定Key words
rubber tree anthracnose/disease investigation/Colletotrichum karstii/molecular identification分类
农业科技引用本文复制引用
郑肖兰,刘先宝,郑行恺,李博勋,时涛,冯艳丽,黄贵修..海南橡胶树炭疽病调查及喀斯特炭疽病菌的鉴定[J].热带作物学报,2023,44(12):2546-2557,12.基金项目
海南省自然科学基金项目(No.2019RC279) （No.2019RC279）
国家重点研发计划项目(No.2018YFD0201100) （No.2018YFD0201100）
海南省重点研发计划项目(No.ZDYF20182402). （No.ZDYF20182402）
