浙江农业学报 ›› 2021, Vol. 33 ›› Issue (1): 96-103.DOI: 10.3969/j.issn.1004-1524.2021.01.12

• 植物保护 • 上一篇    下一篇

党参根腐病病原菌鉴定及其室内毒力测定

徐雪芬1(), 倪春辉1, 李惠霞1,*(), 李焕宇1, 李文豪1, 陈垣2, 胡芳弟3   

  1. 1.甘肃农业大学 植物保护学院 甘肃省农作物病虫害生物防治工程实验室,甘肃 兰州 730070
    2.甘肃农业大学 农学院,甘肃 兰州 730070
    3.兰州大学 药学院,甘肃 兰州 730030
  • 收稿日期:2020-03-21 出版日期:2021-01-25 发布日期:2021-01-25
  • 通讯作者: 李惠霞
  • 作者简介:*李惠霞,E-mail:lihx@gsau.edu.cn
    徐雪芬(1995—),女,甘肃渭源人,硕士研究生,研究方向为植物病原真菌学。E-mail:1599429649@qq.com
  • 基金资助:
    国家重点研发计划(2018YFC1706301);甘肃省中药材产业技术体系

Pathogen identification and indoor toxicity tests on root rot of Codonopsis pilosula

XU Xuefen1(), NI Chunhui1, LI Huixia1,*(), LI Huanyu1, LI Wenhao1, CHEN Yuan2, HU Fangdi3   

  1. 1. College of Plant Protection, Gansu Agricultural University, Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, Lanzhou 730070, China
    2. College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
    3. College of Pharmacy, Lanzhou University, Lanzhou 730030, China
  • Received:2020-03-21 Online:2021-01-25 Published:2021-01-25
  • Contact: LI Huixia

摘要:

为明确引起甘肃省渭源县党参根腐病的病原菌,并筛选防治该病害的最佳杀菌剂,试验采用组织分离法和单孢分离法对引起党参根腐病的病原菌进行了分离纯化,通过致病性测定、形态学特征、编码转录延伸因子区序列(TEF-1α)聚类分析对病原菌进行了鉴定,并采用生长速率法进行药剂毒力测定。病原鉴定结果表明,引起甘肃省渭源县党参根腐病的病原菌为茄镰孢菌(Fusarium solani)和锐顶镰孢菌(Fusarium acuminatum);毒力测定结果表明,参试的6种药剂均对其有抑制效果, 其中25%腈菌唑乳油、50%多菌灵可湿性粉剂对党参根腐病菌丝生长具有较好的防治效果(EC50<0.05 g·L-1),可作为防治党参根腐病的主选药剂。

关键词: 党参, 根腐病, 茄镰孢菌, 锐顶镰孢菌, 鉴定, 杀菌剂

Abstract:

In order to identify the pathogenic fungi causing the root rot of Codonopsis pilosula in Weiyuan County of Gansu Province and screen the best fungicides to control the disease, the pathogen causing the root rot of Codonopsis pilosula was isolated and purified by tissue isolation and single spore isolation. The pathogen was identified by pathogenicity determination, colony morphological characteristics, and clustering analysis of coding transcription extension factor region (TEF-1α). The toxicity was determined by growth rate method. The results of pathogen identification showed that Fusarium solani and Fusarium acuminatum were the pathogens causing root rot of Codonopsis pilosula in Weiyuan County of Gansu Province. The results of virulence test showed that all the six fungicides had inhibitory effect on them. Among them, 25% myclobutanil EC and 50% carbendazim WP had strong control effect (EC50<0.05 g·L -1), which could be used as the main fungicides to control the root rot of Codonopsis pilosula.

Key words: Codonopsis pilosula, root rot, Fusarium solani, Fusarium acuminatum, identification, fungicide

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