UV-B辐射增强对小麦条锈病影响的初步探讨  

Primary studies on the effect of enhanced UV-B on wheat stripe rust

作　　者：李晶[1] 韩国菲[1] 马占鸿[1] 

机构地区：[1]中国农业大学植物病理学系,农业部分子植物病理学重点开放实验室,北京100193

出　　处：《植物保护》2008年第3期82-85,共4页Plant Protection

基　　金：“973”项目(2006CB100203);国家“十一五”科技支撑计划项目(2006BAD10A01)

摘　　要：在温室条件下用铭贤169、吨半麦、咸农4号3个小麦品种,研究了接种条锈菌条中32号小种前后UV-B辐射增强对小麦条锈病的影响。结果表明,接种前对小麦照射UV-B增强了品种铭贤169和吨半麦的病情指数,但对咸农4号的病情指数没有影响。接种后照射UV-B对品种咸农4号、铭贤169和吨半麦的病情指数均无显著影响,但却减少了条锈菌在品种铭贤169和吨半麦上的产孢期与产孢量。The effects of enhanced UV-B on the wheat stripe rust on three wheat cultivars were investigated. In the first experiment, before inoculation, the wheat cultivars were irradiated with UV-B308 lamps and subjected to three treatments at three levels of UV-B radiation. In the second experiment, after inoculation, plants were irradiated with UV-B308 lamps. The results showed the UV-B effects differed depending on the wheat cultivars used. In the first experiment, no effects were observed on the interactions of a highly resistant cultivar with rust, but the rust severity significantly increased on two susceptible wheat cultivars after UV-B radiation. In the second experiment, no effects were detected on the interactions of all three cultivars with rust, but sporulation period and spore yield decreased on two susceptible wheat cultivars.

关 键 词：UV—B辐射 小麦条锈病 病情指数 产孢面积 产孢量 

分 类 号：S435.121[农业科学—农业昆虫与害虫防治]