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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (15): 285-291.

所属专题： 油料作物； 园艺

• 植物保护 农药 • 上一篇    下一篇

江苏省油菜菌核病菌对多菌灵和菌核净的抗药性监测

匡静 王建新 周明国   

  • 收稿日期:2011-01-14 修回日期:2011-02-22 出版日期:2011-06-25 发布日期:2011-06-25
  • 基金资助:

    农业部行业科技子课题 “油菜菌核病早期诊断技术与成灾规律研究”

Monitoring on Carbendazim and Dimethachlon-resistance of Sclerotinia sclerotiorum Obtained from the Blight Stems of Rape in Jiangsu Province

  • Received:2011-01-14 Revised:2011-02-22 Online:2011-06-25 Published:2011-06-25

PDF (PC)

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摘要：

2006—2010年从江苏省12个地级市的油菜产区采集油菜菌核，经分离纯化共获得6017株油菜菌核病菌。采用区分剂量法测定其对多菌灵和菌核净的抗药性。结果表明，2006—2010年间江苏省各地均有多菌灵抗性菌株的分布且抗药性水平较高，抗药性频率分别为63.9%、24.0%、17.1%、16.7%和9.8%，呈逐年下降的趋势。同时经室内研究发现，多菌灵抗性菌株与敏感菌株在菌丝生长、菌核产生、以及致病力等方面无显著差异。而2006—2010年间江苏省油菜菌核病菌对菌核净表现敏感，平均抗性频率仅为0.10%，5年内只在盐城、常州、连云港三地监测到共6株低抗菌株，且菌核净低抗菌株在菌丝生长、菌核产生等方面明显弱于敏感菌株。

关键词: 模糊综合评价, 模糊综合评价

Abstract:

A total of 6017 single-sclerotium isolates of Sclerotinia sclerotiorum were collected throughout Jiangsu Province in order to determine their sensitivity to Carbendazim and Dimethachlon. From 2006 to 2010, the Carbendazim resistance in S. sclerotiorum was widely spread throughout Jiangsu Province with the resistance frequencies of 63.9%, 24.0%, 17.1%, 16.7% and 9.8%, respectively. Although the resistance frequencies decreased year by year, most of them were highly resistant strains. Moreover, there was no significant difference on the performance of mycelial radial growth, pathogenicity, and sclerotial production between Carbendazim resistant and sensitive strains. In the five years, most isolates were considered sensitive to Dimethachlon. Only six isolates collected in Yancheng, Changzhou and Lianyungang showed normal growth at 5μg/mL. Moreover, the Dimethachlon resistance isolates were less fit than sensitive isolates in terms of mycelial radial growth, pathogenicity, and sclerotial production.