湖北农业科学 ›› 2020, Vol. 59 ›› Issue (24): 117-121.doi: 10.14088/j.cnki.issn0439-8114.2020.24.026

• 植物保护 • 上一篇    下一篇

湖北省黄连炭疽病的病原鉴定及其生物学特性

王佐乾1, 潘竹青1, 张舒1, 游景茂2, 王友平1, 杨小林1   

  1. 1.湖北省农业科学院植保土肥研究所/农作物重大病虫草害防控湖北省重点实验室/农业农村部华中作物有害生物综合治理重点实验室,武汉 430064;
    2.湖北省农业科学院中药材研究所,湖北 恩施 445000
  • 收稿日期:2020-09-20 出版日期:2020-12-25 发布日期:2021-01-21
  • 通讯作者: 杨小林(1971-),女,湖北黄梅人,研究员,博士,主要从事植物病原菌致病性及病虫害防控技术研究,(电子信箱)1205600908@qq.com。
  • 作者简介:王佐乾(1988-),男,山东青岛人,助理研究员,博士,主要从事水稻病害致病机理及防控技术研究,(电话)18971622069(电子信箱)wangzuoqian@sina.com
  • 基金资助:
    农业农村部华中作物有害生物综合治理重点实验室/农作物重大病虫草害防控湖北省重点实验室开放基金课题(2018ZTSJJ11); 湖北省农业科技创新中心项目(2018-620-003-001)

Identification and biological characteristics of the pathogen causing anthracnose on goldthread in Hubei province

WANG Zuo-qian1, PAN Zhu-qing1, ZHANG Shu1, YOU Jing-mao1, WANG You-ping1, YANG Xiao-lin1   

  1. 1. Institute of Plant Protection and Soil Science, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory for Crop Diseases, Insect Pests and Weeds Control/Key Laboratory of Integrated Pest Management on Crops in Central China, Ministry of Agriculture and Rural Affairs P. R. China, Wuhan 430064, China;
    2. Institute of Chinese Herbal Medicines, Hubei Academy of Agricultural Sciences, Enshi 445000, Hubei, China
  • Received:2020-09-20 Online:2020-12-25 Published:2021-01-21

摘要: 为了鉴定湖北省黄连(Coptis chinensis Franch.)炭疽病致病菌,了解其生物学特性,研制有效的防治药剂,于湖北省恩施市板桥镇采集病斑叶片,利用组织分离法得到真菌12株。其中EsH2和EsH6接种离体叶片能够产生典型病斑。经形态学和ITS序列系统发育分析鉴定,明确致病菌株均属博宁炭疽菌Colletotrichum boninense复合群。对菌株EsH2和EsH6的生物学特性分析,统计不同培养基或光照条件下生长速率,并且测定了常用的5种杀菌剂对菌丝生长的抑制率。结果表明,EsH2、EsH6分别在绿豆培养基和PDA培养基上生长较快,供试菌株缺乏光照情况下生长显著减慢,5种供试药剂中苯醚甲环唑、甲基硫菌灵和吡唑醚菌酯的抑制中浓度较小,抑菌相关性较好。

关键词: 黄连(Coptis chinensis Franch.), 炭疽病, 系统发育分析, 生物学特性, 杀菌剂

Abstract: To identify anthracnose on goldthread in Hubei province, study its biological characteristics, and screen effective fungicides, there were twelve isolates isolated by tissue isolation method from infected leaves collected from Banqiao, Enshi, Hubei province. Among them, EsH2 and EsH6 succeed to infect leaves of goldthread in vitro and produce typical lesions. While morphology and ITS phylogenetic analysis indicated the two isolates belonging to Colletotrichum boninense species complex. Evaluation of culture under variants illumination conditions showing that they grew significantly slower under absence of light. And they grew more rapid on mung bean medium and PDA than obtained from others, respectively. Results of fungicide toxicity assay exhibited thiophanate-methyl, pyraclostrobin and difenoconazole were more effective fungicides than others with relatively low EC50 and high correlation coefficient.

Key words: Coptis chinensis Franch, anthracnose, phylogenetic analysis, biological characteristics, fungicides

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