| 苏凯1，桑维钧1*，张新强2，潘滴滴3，王慧1.贵州省烟草黑胫病菌对烯酰吗啉的敏感性[J].植物保护,2013,39(1):154-158. |
| 贵州省烟草黑胫病菌对烯酰吗啉的敏感性 |
| Sensitivity of Phytophthora nicotianae var. nicotianae to dimethomorph in Guizhou |
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| DOI： |
| 中文关键词: 烟草黑胫病菌 烯酰吗啉 敏感性 |
| 英文关键词:Phytophthora nicotianae var. nicotianae dimethomorph sensitivity |
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| 中文摘要: |
| 为了明确烟草黑胫病菌对烯酰吗啉的敏感性现状，从贵州省各地采集了47株烟草黑胫病菌株，分别测定了菌丝生长和游动孢子囊形成对烯酰吗啉的敏感性。结果表明，烯酰吗啉对烟草黑胫病菌菌丝生长和孢子囊形成的抑制基本一致,对菌丝EC50范围为0.792 6~4.232 7 μg/mL，平均为2.476 8 μg/mL；对孢子囊的抑制作用略强，EC50范围为0.394 5~4.625 3 μg/mL，平均值为2.040 0 μg/mL。统计分析表明，烟草黑胫病菌47个菌株菌丝生长和孢子萌发对烯酰吗啉的敏感性符合正态分布，不同菌株对烯酰吗啉的敏感性有显著差异，而且菌株对烯酰吗啉的敏感性与其地理来源有一定的相关性。 |
| 英文摘要: |
| To confirm the sensitivity of Phytophthora nicotianae var. nicotianae to dimethomorph，forty seven isolates of P. nicotianae var. nicotianae were collected from several areas in Guizhou Province, and sensitivity of mycelial growth and zoosporangia formation to dimethomorph were measured. The results showed that dimethomorph could inhibit the mycelial growth and sporangium formation of P. nicotianae var. nicotianae, for mycelial growth, with a mean EC50 value of 2.476 8 μg/mL，ranging from 0.792 6 μg/mL to 4.232 7 μg/mL; and for sporangium formation, with a mean EC50 value of 2.040 0 μg/mL，ranging from 0.394 5 μg/mL to 4.232 7 μg/mL．Sensitivity of these isolates to dimethomorph was fitted well with a normal distribution function. There were significant differences in the sensitivity of different strains to dimethomorph, and moreover there was a correlation between strain sensitivity and its geographical origin. |
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