不同硅制剂水培处理对小麦白粉病的作用效果及其机理的初步研究  

Effect of different silicon compounds on wheat powdery mildew by solution culture and its action mechanism to pathogen spores

作　　者：刘彩云[1,2,3] 常志隆[2] 张福锁[1] 周益林[3] 王荔军[1] 段霞瑜[3] 沈慧敏[4] 

机构地区：[1]中国农业大学植物营养系,北京100193 [2]山东潍坊学院生物工程学院,潍坊261061 [3]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 [4]甘肃农业大学草业学院,兰州730070

出　　处：《植物病理学报》2010年第2期222-224,共3页Acta Phytopathologica Sinica

基　　金：国家自然科学基金资助项目(30170603)

摘　　要：The effect of silica nano-particles,tetraethyl orthosilicate (TEOS) and sodium silicate in solution culture on wheat powdery mildew and its action mechanism to pathogen attack were studied. The results showed that wheat seedlings cultured in nutrient solution with silicon compounds alleviated wheat powdery mil-dew,the control efficacies of TEOS and sodium silicate treatments were 54.08% and 51.36%,respectively,but that of silica nano-particles treatment was only 1.02%. Scanning electron micrograph and X-ray energy dispersive analysis (SEM-EDX) showed that wheat leaves cultured in nutrient solution with TEOS and sodium silicate had more silicon deposition than that of silica nano-particles. It indicated that wheat possessed the equal good imbibe ability to TEOS and sodium silicate,but poor to silicate nano-particles. When wheat leaves were infected with Blumeria graminisf.sptritici,silicon might has a physical prohibition effect to pathogen spore penetration.The effect of silica nano-particles, tetraethyl orthosilicate （TEOS） and sodium silicate in solution culture on wheat powdery mildew and its action mechanism to pathogen attack were studied. The results showed that wheat seedlings cultured in nutrient solution with silicon compounds alleviated wheat powdery mildew, the control efficacies of TEOS and sodium silicate treatments were 54.08% and 51.36%, respectively, but that of silica nano-particles treatment was only 1.02%. Scanning electron micrograph and X-ray energy dispersive analysis （SEM-EDX） showed that wheat leaves cultured in nutrient solution with TEOS and sodium silicate had more silicon deposition than that of silica nano-particles. It indicated that wheat possessed the equal good imbibe ability to TEOS and sodium silicate, but poor to silicate nano-particles. When wheat leaves were infected with Blumeria graminis f. sp tritici, silicon might has a physical prohibition effect to pathogen spore penetration.

关 键 词：硅制剂 小麦白粉病 机理 水培 植物病害 物理机械 植物病原菌 病害发生 

分 类 号：S436.421.1[农业科学—农业昆虫与害虫防治]