新疆农业科学 ›› 2023, Vol. 60 ›› Issue (6): 1523-1530.DOI: 10.6048/j.issn.1001-4330.2023.06.027

• 植物保护·林业·畜牧兽医 • 上一篇    下一篇

文冠果根腐病主要生物学特性及室内药剂筛选

张国新1(), 宋单波1, 刘保军2, 王权1, 白剑宇2(), 郭庆元1()   

  1. 1.新疆农业大学农学院,乌鲁木齐 830052
    2.新疆林科院经济林研究所/新疆林果树种选育与栽培重点实验室,乌鲁木齐 830063
  • 收稿日期:2022-08-25 出版日期:2023-06-20 发布日期:2023-06-20
  • 通信作者: 白剑宇(1977-),男,河北人,研究员,研究方向为林业有害生物监测预警与防控,(E-mail) bjyhao2010@sina.com; 郭庆元(1962-),男,四川人,教授,博士,硕士生/博士生导师,研究方向为作物病害及其防治,(E-mail) guoqingyuan3009@sina.com
  • 作者简介:张国新(1997-),河南人,硕士研究生,研究方向为植物病理学,(E-mail)1023971253@qq.com
  • 基金资助:
    新疆维吾尔自治区林业科技专项“新疆特色林果新病害病原种类、生态分布及传播规律研究”(KY2021031)

Biological characteristics and screening of fungicides of Xanthoceras sorbifolium bunge root rot in the lab

ZHANG Guoxin1(), SONG Danbo1, LIU Baojun2, WANG Quan1, BAI Jianyu2(), GUO Qingyuan1()   

  1. 1. Department of Plant Pathology, College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China
    2. Key Laboratory of Fruit Tree Species Breeding and Cultivation in Xinjiang/Research Institute of Economic Forestry, Xinjiang Academy of Forestry Sciences, Urumqi 830063, China
  • Received:2022-08-25 Online:2023-06-20 Published:2023-06-20
  • Correspondence author: BAI Jianyu(1977-), male, native place: Xinjiang. Professor, research field: Forestry Pest Monitoring alert and Prevention and Control,(E-mail) bjyhao2010@sina.com; GUO Qingyuan(1962-), male, native place Sichuan, professor, research direction is crop diseases and control, (E-mail) guoqingyuan3009@sina.com
  • Supported by:
    Xinjiang Uygur Autonomous Region forestry science and technology special project "Research on the Pathogenic Species, Ecological Distribution, and Transmission Law of New Forest and Fruit Diseases in Xinjiang"(KY2021031)

摘要:

【目的】研究文冠果根腐病菌瓜果腐霉(Pythium aphanidermature)的生物学特性,筛选抑菌效果明显的杀菌剂,为文冠果根腐病田间药剂筛选提供备选药剂。【方法】采用菌丝生长速率法分别测定病原菌在不同碳源、温度和pH值条件下的生长速率,分析病原菌主要生物学特性。运用病原菌的室内药剂毒力测定试验,筛选高效抑菌药剂。【结果】病原菌在8种不同碳源培养基上均可生长,其中在PDA上生长速率明显优于其它7种培养基,病原菌在PDA上生长最好,其次为CMA、PCA、OA、PSA、胡萝卜、WA和MA;病原菌在15~40℃均可生长,且最适温度在(35±1)℃;病原菌在pH值为4~11均可生长,其中pH值为8.0时生长最优;30%甲霜·噁霉灵毒力最大,EC50值为1.259 9 mg/L,其次为50%腐霉·福美双,EC50值为8.156 4 mg/L,而2×109 CFU/g 枯草芽孢杆菌毒力最小,EC50值为4 107.327 mg/L。【结论】在8种不同碳源培养基中,最适培养基为PDA,最适生长温度为35℃左右,最适pH值为8。供试12种药剂对病原菌菌丝生长均具有一定的抑制效果,其中甲霜·噁霉灵的抑菌效果最好,其次为腐霉·福美双和代森锰锌,3种药剂可作为文冠果根腐病田间防治药剂的备选药剂。

关键词: 文冠果; 根腐病; 生物学特性; 毒力测定

Abstract:

【Objective】 To clarify the biological characteristics of Xanthoceras sorbifolia root rot pathogen, melon and Pythium aphanidermature, and screen fungicides with obvious bacteriostatic effect, so as to provide alternative fungicides for field fungicide screening of Xanthoceras sorbifolia root rot.【Methods】 In the experiment, the mycelial growth rate method was used to determine the growth rate of pathogens under different carbon sources, temperatures and pH values, so as to clarify the main biological characteristics of pathogens. Through the indoor drug virulence determination experiment of pathogenic bacteria, the prevention and control drugs were screened out. 【Results】 The biological characteristics of pathogens showed that the pathogens could grow in 8 different carbon source media, but the growth on PDA and CMA was better than the other 7 cultures. The pathogens grew best on PDA, followed by CMA, PCA, OA, PSA, carrot, WA, MA; the pathogen could grow at 15-40℃, and the optimum temperature was (35±1)℃; the pathogen could grow at pH 4-11, among which the optimal growth was when the pH value was 8.0; 30% benzalkonium · hymexazol was the most virulent, with an EC50 value of 1.259,9 mg/L, followed by 50% Pythium · Thiram with an EC50 value of 8.156 4 mg/L, while 2×109 CFU/g Bacillus subtilis was the least virulent, with an EC50 value of 4,107.327 mg/L.【Conclusion】 Among the 8 different carbon source media tested, the optimum medium is PDA, the optimum growth temperature is about 35℃ and the optimum pH value 8. All the 12 fungicides tested have certain inhibitory effects on the mycelial growth of pathogenic bacteria, Among which, metalaxyl oxamyl has the best antibacterial effect, followed by Pythium thiram and mancozeb. The three fungicides can be used as alternative fungicides for the field control of Xanthoceras sorbifolia root rot.

Key words: Xanthoceras sorbifolia; root rot; biological characteristics; virulence determination

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

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