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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (23): 388-391.

• 植物保护 农药 • 上一篇    下一篇

不同浓度臭氧水对致病疫霉菌Phytophthora infestans孢子萌发抑制作用初报

徐常青 魏建健 曹克强 刘丽   

  • 收稿日期:2009-06-30 修回日期:2009-08-06 出版日期:2009-12-05 发布日期:2009-12-05
  • 基金资助:
    科技部国际合作项目

Inhibitory effects of ozone solution at different concentrations on spore germination of Phytophthora infestans (Mont.) de Bary

  • Received:2009-06-30 Revised:2009-08-06 Online:2009-12-05 Published:2009-12-05

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摘要： 本文采用不同浓度臭氧水对致病疫霉菌Phytophthora infestans (Mont.) de Bary孢子囊萌发进行了试验，结果表明：臭氧水处理对孢子囊萌发的影响与臭氧水浓度密切相关，以9 mg/Kg臭氧水处理1 min可以抑制95%以上孢子囊萌发，以18 mg/Kg臭氧水处理1 min则100%抑制孢子囊萌发。无论在高浓度还是在低浓度条件下，处理时间1分钟或2分钟对孢子囊萌发没有产生显著影响，杀菌作用几乎是瞬间完成的。臭氧水处理孢子囊后导致孢子囊形态发生变化，这种变化随时间延长变得更加明显。鉴于高浓度臭氧水对植物本身不产生毒害作用，因此，高浓度臭氧水在控制晚疫病方面显示出广阔的应用前景。

关键词: 种子包衣肥, 种子包衣肥, 水稻, 苗素质, 生化指标, 直播

Abstract: Inhibitory effects of ozone solution on spore germination of Phytophthora infestans (Mont.) de Bary were tested and the morphological change of sporangia was observed under microscope. The results showed that spore germination rate was closely related to ozone concentrations. More than 95% spores were inhibited at concentration of 9 mg/Kg and 100% spores were restrained at 18 mg/Kg. While the treating time 1 minute and 2 minutes had no significant difference at both concentrations. Morphological deformation was found after 72 hours treated with high concentration of ozone solution. As ozone solution at high concentration has no toxicity to plants, it showed much potential to be used in controlling late blight in field.