摘要
锈腐病是三七根腐病中发病率最高的一种,其病原是柱孢属真菌Cylindrocarpon sp.。作者认为柱孢属真菌侵染三七根部后引起的症状不一,可引起黑腐、锈裂和锈斑3类不同的症状,本文报道的是引起三七块根锈斑症状的病原菌,对采自云南省文山州砚山县的发病植株进行了症状观察,并进行病原菌的分离培养和显微形态特征观察、致病性测定及r DNA-ITS序列分析,确定该类型的病害是由毁灭柱孢粗孢变种Cylindrocarpon destructans var.crassum侵染引起。
Three kinds of root diseases of Panax notoginseng, black root rot, root rust Cylindrocarpon sp. were different pathogenically. The causal agent of the root rust crevasse spot of and root rust spot, caused by nfected plants collected from Yanshan in Yunnan Province, was identified as Cylindrocarpon destructans var. crassum based on disease symptom observation, morphological characteristics of pathogen, pathogenicity and rDNA-ITS phylogenetic analysis
出处
《菌物学报》
CAS
CSCD
北大核心
2015年第2期177-185,共9页
Mycosystema
基金
云南省省院省校合作项目"文山三七现代农业工程技术产业化示范项目"(2012IB023)
关键词
毁灭柱孢粗孢变种
形态特征
ITS序列分析
Cylindrocarpon destructans var. crassum, morphological characteristics, rDNA-ITS analysis
