Baseline sensitivity and efficacy of fluazinam in controlling Sclerotinia stem rot of rapeseed

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• 作者：Yong Wang ; Ya-Bing Duan ; Ming-Guo Zhou
• 关键词：Fluazinam ; Sclerotinia sclerotiorum ; Baseline sensitivity ; Disease management
• 刊名：European Journal of Plant Pathology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：144
• 期：2
• 页码：337-343
• 全文大小：330 KB
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• 作者单位：Yong Wang (1) (2)
  Ya-Bing Duan (1)
  Ming-Guo Zhou (1)
  
  1. College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing, 210095, China
  2. Research & Development Center of Biorational Pseticide, Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Northwest A&F University, Yangling, 712100, China
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Plant Pathology
  Plant Sciences
  Ecology
  
• 出版者：Springer Netherlands
• ISSN：1573-8469

文摘

Baseline sensitivity of Sclerotinia sclerotiorum to fluazinam was determined using 150 isolates collected during 2011 and 2013 from the rapeseed fields without a previous history of fluazinam usage in Jiangsu province of China. The median effective concentration (EC₅₀) values for fluazinam inhibiting mycelial growth on agar plates ranged from 0.0019 to 0.0115 渭g/mL (mean of 0.0069 渭g/ml). Neither cross-resistance between fluazinam and carbendazim or dimethachlon was detected. None of the tested isolates displayed reduced sensitivity to fluazinam. On detached rapeseed leaves and pot experiments, fluazinam at 150 渭g/ml provided over 80 % control efficacy and exhibited excellent protective activity. In field trials, fluazinam at 187.5 g a.i. ha鈭? provided over 70 % control efficacy, higher than other traditional fungicides, suggesting excellent activity against Sclerotinia stem rot (SSR). These results suggest that fluazinam has strong antifungal activity and could be a good alternative fungicide to carbendazim or dimethachlon in controlling Sclerotinia stem rot. Keywords Fluazinam Sclerotinia sclerotiorum Baseline sensitivity Disease management