浙江农业科学 ›› 2026, Vol. 67 ›› Issue (9): 2235-2239.DOI: 10.16178/j.issn.0528-9017.20260357

• 植保技术 • 上一篇    下一篇

大蒜根腐病病原鉴定及其致病性研究

郭连军1(), 王雅静2, 李腾3, 崔凯3, 董崭3()   

  1. 1.招远市农田水利服务中心,山东 招远 265400
    2.内蒙古自治区包头市九原区哈业胡同镇综合保障和技术推广中心,内蒙古 包头 014060
    3.山东省农业科学院,山东 济南 250100
  • 收稿日期:2026-05-06 出版日期:2026-09-11 发布日期:2026-09-24
  • 通讯作者: 董崭
  • 作者简介:董崭,E-mail:zhandongsaas@163.com。
    郭连军,主要从事植物保护研究和农业技术推广工作。E-mail:guolianjuna@126.com。
  • 基金资助:
    山东省农业科学院农业科技创新工程(CXGC2025C06)

Identification and pathogenicity of pathogens of garlic(Allium sativum L.) root rot

GUO Lianjun1(), WANG Yajing2, LI Teng3, CUI Kai3, DONG Zhan3()   

  1. 1.Zhaoyuan City Agricultural Water Conservancy Service Center,Zhaoyuan 265400,Shandong
    2.Comprehensive Support and Technology Promotion Center of Haye Hutong Town,Jiuyuan District,Baotou City,Inner Mongolia Autonomous Region,Baotou 014060,Inner Mongolia
    3.Shandong Academy of Agricultural Sciences,Jinan 250100,Shandong
  • Received:2026-05-06 Online:2026-09-11 Published:2026-09-24
  • Contact: DONG Zhan

摘要:

本研究在山东商河地区采集大蒜根腐病样品,从中分离获得20株分离物,通过形态学与分子生物学相结合的方法对其进行鉴定,并采用土壤接种法测定其对大蒜幼苗的致病性。结果显示,17株分离物为尖孢镰刀菌(Fusarium oxysporum),3株分离物为番薯镰刀菌(F. ipomoeae)。2种镰刀菌均对大蒜幼苗具有致病性,均为大蒜根腐病的病原菌。其中,尖孢镰刀菌致病力较强,大蒜幼苗的平均病株率和病情指数分别达95.24%和59.59;番薯镰刀菌致病力较弱,平均病株率和病情指数分别为66.67%和20.32。值得注意的是,本研究首次报道了番薯镰刀菌可作为大蒜根腐病的病原菌,为大蒜根腐病的抗病育种和田间防治提供了理论依据。

关键词: 大蒜, 根腐病, 病原菌鉴定, 镰刀菌, 致病性

Abstract:

From garlic root rot samples collected in Shanghe County,Shandong Province,a total of 20 isolates were obtained. These isolates were identified using a combination of morphological and molecular approaches,and their pathogenicity to garlic seedlings was assessed through soil inoculation. The results showed that 17 isolates were identified as Fusarium oxysporum,and three isolates as F. ipomoeae. Both Fusarium species exhibited pathogenicity to garlic seedlings,confirming them as causal agents of garlic root rot. Among them,F. oxysporum displayed stronger pathogenicity,with average diseased plant rate and disease index reaching 95.24% and 59.59,respectively;whereas F. ipomoeae showed weaker pathogenicity,with average diseased plant rate and disease index of 66.67% and 20.32,respectively. Notably,the identification of F. ipomoeae as a pathogen of garlic root rot represented the first report of its kind,providing a theoretical basis for disease-resistant breeding and field control of garlic root rot.

Key words: garlic, root rot, pathogen identification, Fusarium, pathogenicity

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