2008年我国部分麦区小麦白粉病菌群体对温度的敏感性  

Sensitivity of population of Blumeria graminis f.sp.tritici isolates to temperature in 2008

作　　者：宛琼[1,2] 丁克坚[2] 段霞瑜[1] 周益林[1] 

机构地区：[1]中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京100193 [2]安徽农业大学植物保护学院,合肥230036

出　　处：《植物病理学报》2010年第1期106-109,共4页Acta Phytopathologica Sinica

基　　金：公益性行业科研专项(3-15);国家科技支撑计划项目(2006BAD08A05;2006BAD02A16)

摘　　要：The sensitivity of 113 isolates of wheat powdery mildew (Blumeria graminis f.sp.tritici) sampled from 6 provinces or cities in 2008 to temperature was tested by detached leaf segment method with setting up 5 different temperatures indoor. The results showed the mean ET50 (which represents the temperature that is required to obtain 50% of the maximum effect) of all isolates tested was 23.02℃. ET50 values of 17.70% isolates were more than 24℃. The highest and the lowest ET50 of isolates were 25.22℃ and 19.42℃, respectively. There were a certain differences for isolates sensitivity to temperature among different provinces or cites. It was also found that when temperature increased during 22-26℃, the latent period of isolates prolonged, and the latent period of different isolates was different at the same temperature, too. These results will provide a reference for the oversummering division of wheat powdery mildew, as well as the effect of climate to the disease.The sensitivity of 113 isolates of wheat powdery mildew （Blumeria graminis f.sp.tritici） sampled from 6 provinces or cities in 2008 to temperature was tested by detached leaf segment method with setting up 5 different temperatures indoor. The results showed the mean ET50 （which represents the temperature that is required to obtain 50% of the maximum effect） of all isolates tested was 23.02℃. ET50 values of 17.70% isolates were more than 24℃. The highest and the lowest ET50 of isolates were 25.22℃ and 19.42℃, respectively. There were a certain differences for isolates sensitivity to temperature among different provinces or cites. It was also found that when temperature increased during 22-26℃, the latent period of isolates prolonged, and the latent period of different isolates was different at the same temperature, too. These results will provide a reference for the oversummering division of wheat powdery mildew, as well as the effect of climate to the disease.

关 键 词：小麦白粉病 菌群体 敏感性 温度 麦区 真菌病害 抗药性监测 病害流行 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治] S435.111.4[农业科学—植物保护]