欢迎访问《中国农学通报》,

中国农学通报 ›› 2025, Vol. 41 ›› Issue (15): 117-123.doi: 10.11924/j.issn.1000-6850.casb2024-0620

• 植物保护·农药 • 上一篇    下一篇

湖南丝瓜枯萎病病原菌的分离鉴定及种质抗性评价

韩小霞1(), 董文静2, 闵子扬1, 李勇奇1, 卢亚楠3, 杨建华1, 胡新军1(), 朱宏建2()   

  1. 1 湖南省农业科学院/湖南省蔬菜研究所/湖南省蔬菜工程技术研究中心,长沙 410125
    2 湖南农业大学植物保护学院,长沙 410128
    3 长沙县农业局,湖南长沙 410100
  • 收稿日期:2024-09-27 修回日期:2025-03-14 出版日期:2025-05-25 发布日期:2025-05-29
  • 通讯作者:
    胡新军,男,1970年出生,湖南宁乡人,研究员,学士,研究方向为蔬菜遗传育种与栽培技术。通信地址:410125 湖南省长沙市芙蓉区马坡岭省农科院蔬菜所开发楼503 湖南省蔬菜研究所, Tel:0731-84690076,E-mail:
    朱宏建,男,1979年出生,湖南石门人,副教授,博士,研究方向:植物病理和植物病害生物防治。通信地址:410128 湖南农业大学生物安全科学技术学院 湖南农业大学,E-mail:
  • 作者简介:

    韩小霞,女,1979年出生,山东潍坊人,副研究员,博士,研究方向为蔬菜遗传育种与分子生物学。通信地址:410125 湖南省长沙市芙蓉区马坡岭省农科院蔬菜所开发楼503 湖南省蔬菜研究所,E-mail:

  • 基金资助:
    国家重点研发计划项目(2021YFD1600300-4-3); 湖南省科技特派员服务乡村振兴项目(2024RC8150); 湖南省农业科技创新资金项目(2023CX28)

Isolation and Identification of Pathogen of Luffa Wilt in Hunan Province and Evaluation of Resistant Germplasm

HAN Xiaoxia1(), DONG Wenjing2, MIN Ziyang1, LI Yongqi1, LU Ya’nan3, YANG Jianhua1, HU Xinjun1(), ZHU Hongjian2()   

  1. 1 Hunan Academy of Agricultural Sciences/ Hunan Vegetable Research Institute/Hunan Vegetable Engineering Technology Research Center, Changsha 410125
    2 College of Plant Protection, Hunan Agricultural University, Changsha 410128
    3 Changsha County Agriculture Bureau, Changsha 410100
  • Received:2024-09-27 Revised:2025-03-14 Published:2025-05-25 Online:2025-05-29

摘要:

为评价丝瓜种质的枯萎病抗性,获得适合在湖南种植的抗性种质,从丝瓜枯萎病植株中分离获得枯萎病病原菌,并对该病原菌进行形态学鉴定、分子鉴定和致病力分析,进而利用建立的苗期人工接种鉴定技术体系,对126份丝瓜种质进行接种鉴定。形态学鉴定结果表明该病原菌具有典型尖孢镰刀菌的特性,基因组内转录间隔区序列扩增测序结果表明该病原菌为尖孢镰刀菌(Fusarium oxysporum),且该菌株具有强致病性。利用该菌株对参试种质的抗病性进行评价,获得8份抗病种质、17份中抗种质和101份不抗病种质。本研究可为深入挖掘丝瓜枯萎病抗性基因、创制抗性种质和培育抗病新品种提供技术支撑。

关键词: 丝瓜, 枯萎病, 分离鉴定, 尖孢镰刀菌, 致病力, 苗期人工接种, 抗性种质

Abstract:

The paper aims to evaluate the wilt resistance of luffa germplasm and obtain resistant germplasm suitable for planting in Hunan. This study isolated the pathogen of luffa wilt disease from plants, and conducted morphological identification, molecular identification, and pathogenicity analysis of the pathogen. Then, using the established artificial inoculation identification technology system during the seedling stage, 126 luffa germplasms were inoculated and identified. The morphological identification results indicated that the pathogen had typical characteristics of Fusarium oxysporum. The amplification and sequencing of the internal transcribed spaces (ITS) sequence within the genome indicated that the pathogen was F. oxysporum and had strong pathogenicity. Using this strain to evaluate the disease resistance of the tested germplasm, 8 resistant germplasm, 17 moderately resistant germplasm, and 101 non resistant germplasm were obtained. This study provides technical support for in-depth exploration of resistance genes to luffa wilt disease, creation of resistant germplasm, and cultivation of new disease resistant varieties.

Key words: luffa, wilt, isolation and identification, Fusarium oxysporum, pathogenicity, artificial inoculation at seedling stage, resistant germplasm