湖北农业科学 ›› 2026, Vol. 65 ›› Issue (5): 105-113.doi: 10.14088/j.cnki.issn0439-8114.2026.05.017

• 植物保护 • 上一篇    下一篇

黄金百香果胶孢炭疽菌生物学特性及杀菌剂筛选

杨翠凤, 滕峥, 侯宪斌, 牛俊乐, 熊定米   

  1. 百色学院农业与食品工程学院/亚热带特色农产品保鲜及综合利用广西高校工程研究中心,广西 百色 533000
  • 收稿日期:2026-02-02 出版日期:2026-05-25 发布日期:2026-05-26
  • 作者简介:杨翠凤(1988-),女,广西桂林人,高级实验师,博士,主要从事植物生理与分子生物学研究,(电子信箱)1678383409@qq.com。
  • 基金资助:
    广西自然科学基金项目(2023GXNSFBA026046)

Biological characteristics of Colletotrichum gloeosporioides from golden passion fruit and screening of fungicides

YANG Cui-feng, TENG Zheng, HOU Xian-bin, NIU Jun-le, XIONG Ding-mi   

  1. College of Agriculture and Food Engineering/Guangxi University Engineering Research Center for Preservation and Comprehensive Utilization of Subtropical Characteristic Agricultural Products, Baise University, Baise 533000, Guangxi, China
  • Received:2026-02-02 Published:2026-05-25 Online:2026-05-26

摘要: 为明确黄金百香果(Passiflora edulis Sims)炭疽病的病原,采用形态学观察、分子生物学分析及致病性测定相结合的方法,将供试黄金百香果炭疽病的致病菌鉴定为胶孢炭疽菌(Colletotrichum gloeosporioides)。采用菌丝生长速率法,研究不同培养基、碳源、氮源、pH、温度等因素对该病菌菌丝生长的影响,并测定该病原菌对5种杀菌剂的敏感性。结果表明,适宜黄金百香果胶孢炭疽菌生长的培养基为PDA培养基,最适碳源为葡萄糖,最适氮源为蛋白胨;菌丝适宜生长温度为25~30 ℃,最适温度为28 ℃;pH适应范围为4~10。药剂敏感性测定发现,5种供试杀菌剂对该致病菌的菌丝生长均有抑制作用,其中50%多菌灵和75%肟菌·戊唑醇的抑制效果最好,在供试的5个浓度梯度下抑菌率均为100%;其次为75%百菌清和25%吡唑醚菌酯,80%代森锰锌的抑菌效果最弱。

关键词: 百香果(Passiflora edulis Sims), 炭疽病, 胶孢炭疽菌(Colletotrichum gloeosporioides), 生物学特性, 杀菌剂

Abstract: To identify the pathogen causing anthracnose in golden passion fruit(Passiflora edulis Sims), a pathogenic fungus isolated from diseased tissues was identified as Colletotrichum gloeosporioides using a combination of morphological observation, molecular biological analysis, and pathogenicity testing. The effects of different culture media, carbon sources, nitrogen sources, pH, and temperatures on the mycelial growth of this pathogen were investigated by the mycelial growth rate method, and its sensitivity to five fungicides was determined. The results showed that PDA medium was the most suitable for the growth of Colletotrichum gloeosporioides from golden passion fruit; glucose was the optimal carbon source and peptone was the optimal nitrogen source. The suitable temperature range for mycelial growth was 25-30 ℃, with the optimum temperature being 28 ℃, and the pathogen could grow at pH 4-10. Fungicide sensitivity tests revealed that all five tested fungicides inhibited the mycelial growth of the pathogen. Among them, 50% carbendazim and 75% trifloxystrobin·tebuconazole exhibited the strongest inhibitory effects, with 100% inhibition rates at all five tested concentrations. The inhibitory effects of 75% chlorothalonil and 25% pyraclostrobin were moderate, and 80% mancozeb exhibited the weakest inhibitory effect.

Key words: golden passion fruit(Passiflora edulis Sims), anthracnose, Colletotrichum gloeosporioides, biological characteristics, fungicide

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