摘要
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 min或2 min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。
Inhibitory effects of ozone solution on spore germination were tested and the morphological change of sporangia was observed of Phytophthora infestans （Mont.） de Bary under microscope. The results showed that spore germination rate was closely related to ozone concentrations. More than 95% spores were inhibited at con- centration 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.
出处
《中国农学通报》
CSCD
北大核心
2009年第23期388-391,共4页
Chinese Agricultural Science Bulletin
基金
科技部国际合作项目"全新农药替代技术开发
集成和应用研究"(2006DFB72260)
国家863计划项目"新型施药技术与农用药械"(2008AA100905)
