小麦慢白粉病品种苗期鉴定研究  

Identification of Wheat Slowmildewing Cultivars in Seedling Stage

作　　者：王瑾[1] 张志德[1] 

机构地区：[1]西北农业大学植保系

出　　处：《西北农业大学学报》1998年第1期60-64,共5页Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)

摘　　要：对小麦幼苗进行了组织病理学观察和氨基酸测定。结果表明：在初生吸器形成率、单孢菌落未成熟次生吸器数、单孢菌落梗基胞数上，慢粉品种与快病品种之间差异显著（Ｐ＝０．０５），这些指标可作为苗期鉴定慢粉品种的指标；在初生乳突形成率和单孢菌落次生附着胞数上，慢粉品种与快病品种间无显著差异；所有参试品种，都未产生过敏性细胞坏死。未接种叶的脯氨酸和丝氨酸含量，慢病品种高于快病品种；接种叶的丝氨酸含量。The histopathological features were observed and contents of amino acide in the wheat seedling were determined.The result showed that the rate of primary haustoria of Blumeria graminis f.sp.tritici,the quantity of secondary haustoria and the quantity of conidiophore basal cell of singlespore colony were significantly different between slowmildewing and highly susceptible cultivars,which can be used as the index for identification of the wheat slowmildewing resistance in the seedling stage.The percentage of primary papillae and the quantity of secondary appressoria of singlespore colony were not significantly different between slowmildewing and highly susceptible cultivars.All of cultivars tested didnt produce necrotic hypersensitive reaction of cell.The contents of proline and serine of the slowmildewing cultivars in the noinoculated leaves were higher than that of highly susceptible cultivar,the serine content of the slowmildewing cultivars in inoculated leaves were lower than that of highly susceptible cultivar respectively.

关 键 词：小麦 组织病理学 抗病育种 白粉病 品种鉴定 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治]