欢迎访问《中国农学通报》,

中国农学通报 ›› 2021, Vol. 37 ›› Issue (25): 125-131.doi: 10.11924/j.issn.1000-6850.casb2021-0314

• 植物保护·农药 • 上一篇    下一篇

辣椒细菌性果实条斑病菌生物学特性及抑菌药剂筛选

张卢慧(), 赵志强, 赵全新, 郭庆元()   

  1. 新疆农业大学农学院,乌鲁木齐 830052
  • 收稿日期:2021-03-25 修回日期:2021-06-29 出版日期:2021-09-05 发布日期:2021-09-23
  • 通讯作者: 郭庆元
  • 作者简介:张卢慧,女,1995年出生,新疆博乐人,硕士研究生,研究方向为作物病害及其防治。通信地址:830052 乌鲁木齐市沙依巴克区南昌路 新疆农业大学,E-mail: 1421023812@qq.com
  • 基金资助:
    新疆维吾尔自治区研究生创新项目“辣椒细菌性条斑病病原鉴定及化学防控”(XJAUGRI2018-004)

Biological Characteristics of Pseudomonas argentinensis Causing Fruit Streak Disease on Pepper and Screening of Bactericides

Zhang Luhui(), Zhao Zhiqiang, Zhao Quanxin, Guo Qingyuan()   

  1. College of Agriculture, Xinjiang Agricultural University, Urumqi 830052
  • Received:2021-03-25 Revised:2021-06-29 Online:2021-09-05 Published:2021-09-23
  • Contact: Guo Qingyuan

摘要:

研究辣椒细菌性果实条斑病菌的生物学特性,对病原菌进行室内药剂筛选,旨在为田间病害规律研究和病害防治提供依据。采用紫外分光光度计测定病原菌在不同温度、pH、NaCl浓度下的生长速率。采用滤纸片抑菌圈法对病原菌进行室内药剂筛选试验。结果表明,辣椒细菌性果实条斑病菌最适生长温度为28℃,最适pH 7.0,病原菌的耐盐性为12%。18种供试药剂在药剂推荐使用剂量范围内,四霉素、乙蒜素、77%志信、氯溴异氰尿酸4种药剂对病原菌有抑菌效果,对这4种药剂进行毒力测定,结果表明四霉素的毒力较强,EC50值为11.75 mg/L,毒力强于其他3种试剂,四霉素可作为田间防治药剂的首选。

关键词: 辣椒, 细菌性果实条斑病, 阿根廷假单胞菌, 生物学特性, 毒力测定

Abstract:

The biological characteristics of the bacterial fruit streak pathogens of pepper were studied and the pathogens were screened for indoor agents with the aim of providing a basis for research on disease patterns and disease control in field. The growth rate of the pathogenic bacteria at different temperature, pH and NaCl concentrations were determined by UV spectrophotometer assay. The indoor pharmaceutical screening test for the pathogenic bacteria was conducted using the filter paper sheet inhibition circle method. The results showed that the optimum growth temperature for the bacterial fruit spot of pepper was 28℃, the optimum pH was 7.0 and the salt tolerance of the pathogen was 12%. 18 test agents were used in the recommended dosage range, and four agents, namely tetramycin, ethyl alliin, 77% Shishin and chlorobromoisocyanuric acid, were effective against the pathogen. The EC50 value of tetramycin was 11.75 mg/L, which was stronger than the other three agents, so tetramycin could be used as the first choice of field control agents.

Key words: pepper, bacterial fruit streak disease, Pseudomonas argentinensis, biological characteristics, toxicity bioassay

中图分类号: