| 易赛1 潘汝谦1 徐大高1 凌金锋2 彭埃天2 习平根1 姜子德1.荔枝霜疫霉菌对烯酰吗啉的敏感性测定[J].广东农业科学,2014,41(2):87-91 |
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荔枝霜疫霉菌对烯酰吗啉的敏感性测定 |
| Sensitivity of Peronophythora litchii to dimethomorph |
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| DOI： |
| 中文关键词: 荔枝霜疫霉菌 烯酰吗啉 敏感性 |
| 英文关键词: Peronophythora litchii dimethomorph sensitivity |
| 基金项目:国家现代农业产业技术体系建设专项CAR-33-
07 |
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| 中文摘要: |
| 荔枝霜疫霉病是荔枝最重要的病害之一烯酰吗啉用于防治该病害。采用生长速率法测定了烯酰吗啉
对2009要2012 年采自广东广西福建和云南等地区的115 个荔枝霜疫霉菌菌株的有效抑制中浓度值（EC50 值结
果表明院各菌株的EC50值介于0.0977~0.2226 g/mL 之间，平均为0.1702，0.0026g/mL最不敏感菌株的EC50 值是最敏感菌株的2.28 倍；所有菌株的EC50值频率分布呈连续单峰曲线，表明无抗药性亚群体。 |
| 英文摘要: |
| Litchi downy blight caused by Peronophythora litchii is one of the most prevalent diseases of litchi in
China. Dimethomorph has been used to control the disease for more than 10 years. The survey of the fungicide resistance
was conducted in this paper. The median effective concentration (EC50) values of dimethomorph to 115 isolates of P. litchii
collected from Guangdong, Guangxi, Fujian and Yunnan during 2009 to 2012 were tested by mycelia radial growth
inhibition method. The results showed that EC50 values ranged from 0.0977 g/mL to 0.2226 g/mL. The average of EC50
value was 0.1702 (0.0026) g/mL. The EC50 value of the most insensitive isolate was 2.28 folds of the most sensitive one.
The EC50 value frequency of all tested isolates distributed as a continuous unimodel curve. It indicated that there was no
resistant subpopulation among these isolates |
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