欢迎访问《茶叶科学》,今天是

茶叶科学 ›› 2015, Vol. 35 ›› Issue (5): 449-457.doi: 10.13305/j.cnki.jts.2015.05.007

• • 上一篇    下一篇

茶丽纹象甲白僵菌广东分离株的鉴定及生物学特性研究

王定锋1, 黎健龙2, 李慧玲1, 李良德1, 王庆森1, 吴光远1,*   

  1. 1. 福建省农业科学院茶叶研究所,福建 福安 355015;
    2. 广东省农业科学院饮用植物研究所 广东省茶树资源创新利用重点实验室,广东 广州 510640
  • 收稿日期:2015-03-04 修回日期:2015-05-05 出版日期:2015-10-15 发布日期:2019-08-26
  • 通讯作者: *gywupt@163.com
  • 作者简介:王定锋,男,硕士,助理研究员,主要从事害虫生物防治研究。
  • 基金资助:
    国家茶叶产业技术体系项目(CARS-23)、中国乌龙茶产业协同创新中心(培育)专项(2013-51)、福建省农业科学院创新团队项目(CXTD-1-1302)、福建省农业科学院茶叶研究所重点项目(2014-cys-02)

Identification and Biology Characteristics Research of a Myllocerinus aurolineatus-Beauveria Strain Isolated from Guangdong Province

WANG Dingfeng1, LI Jianlong2, LI Huiling1, LI Liangde1, WANG Qingsen1, WU Guangyuan1,*   

  1. 1. Tea Research Institute, Fujian Academy of Agricultural Sciences, Fuan 355015, China;
    2. Drinkable Plants Institute (Tea Research Center), Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of Tea Plant Resources Innovation & Utilization, Guangzhou 510640, China;
  • Received:2015-03-04 Revised:2015-05-05 Online:2015-10-15 Published:2019-08-26

摘要: 通过形态学鉴定和rDNA-ITS序列分析,明确了从广东英德茶园中采集到的一株寄生茶丽纹象甲的白僵菌为球孢白僵菌,并命名为Bb1-1。为明确该菌株的生防潜力,以本实验室保存的2株茶丽纹象甲高毒力球孢白僵菌菌株(XJBb3005和XJBb3008)为参考菌,研究了菌株Bb1-1的生长速率、产孢量、孢子萌发率、耐热力和抗紫外能力等生物学特性,并测定了该菌株在25℃、29℃和32℃下对茶丽纹象甲的毒力。结果表明,3个菌株的生长速率、孢子萌发率和抗紫外能力没有明显的差异;3个菌株产孢量大小顺序为XJBb3005>Bb1-1>XJBb3008;但Bb1-1具有最强的耐热力。在25℃下,3个菌株对茶丽纹象甲成虫的累积校正死亡率之间差异不显著,都超过93.94%;但在高温(29℃和32℃)下,菌株Bb1-1对茶丽纹象甲的杀虫毒力优于两个参考菌株,处理7βd累计校正死亡率分别为90.91%和80%,LT50分别为3.83βd和5.28βd。鉴于菌株Bb1-1耐热力较强,且在高温下对茶丽纹象甲成虫具有较好的杀虫毒力,将在今后该虫的生物防治中发挥重要的作用。

关键词: 茶丽纹象甲, 白僵菌, 广东分离株, 鉴定, 生物学特性, 毒力

Abstract: Through morphological characters and rDNA-ITS identification, a Myllocerinus aurolineatus-Beauveria strain that was isolated from tea plantation in Yingde Guangdong Province was identified to be Beauveria bassiana, and named as Bb1-1. In order to confirm the biocontrol potential of Bb1-1, two highly virulent B. bassiana strain towards M. aurolineatus weevil used as the reference, the strain growth rate, sporulation, spore germination rate, thermotolerance and UV resistance of Bb1-1, and the virulence of Bb1-1 to M. aurolineatus weevil under 25℃, 29℃ and 32℃ were tested. The results showed that there were no significant difference on the strain growth rate, spore germination rate, and UV resistance among three strains; the sporulation decreased in this order: XJBb3005> Bb1-1> XJBb3008; however, Bb1-1 showed the best thermotolerance. At 25℃, the cumulative corrective mortality of three strains were all beyond 93.94%, and there were no significance among them. However, the virulence of Bb1-1 to M. aurolineatus weevil was higher than that of the two reference strains under high temperature. At 29℃, the cumulative corrective mortality was 90.91% (7 d), LT50 value was 3.83d. At 32℃, the cumulative corrective mortality was 80% (7 d), LT50 value was 5.28 d. In consideration of Bb1-1’s good thermotolerance and the highly virulent to M. aurolineatus weevil under high temperature, it’ll play a very important role in biocontrol of M. aurolineatus weevil.

Key words: Myllocerinus aurolineatus, Beauveria, Guangdong strain, identification, biology characteristics, virulence

中图分类号: