小麦品系19HRWSN-76的抗叶锈性研究  

Study of Leaf Rust Resistance Gene in Wheat Line 19HRWSN-76

作　　者：师令智[1] 朱琳[1] 任志宽[1] 康占海[1] 李星[1] 刘大群[1] 

机构地区：[1]河北省农作物病虫害生物防治工程技术研究中心/河北农业大学植物保护学院,保定071001

出　　处：《植物遗传资源学报》2016年第4期696-700,共5页Journal of Plant Genetic Resources

基　　金：国家自然科学基金(31361140367);教育部高等学校博士学科点专项科研基金联合资助项目(20131302120004);植物病虫害生物学国家重点实验室开放基金资助课题(SKLOF201513);河北省教育厅优秀青年项目(YQ2013024)

摘　　要：小麦叶锈病是影响小麦产量的最主要病害之一,CIMMYT品系19HRWSN-76高抗小麦叶锈病,以该品系与感病品系郑州5389杂交得到F2群体,利用叶锈菌生理小种FHJP对F2群体接菌鉴定,结果显示群体的抗感比例符合3∶1的理论比值,推测19HR WSN-76的抗叶锈性由一对显型基因控制,暂命名为Lr HR76。利用分子标记技术和分离群体分组分析法对F2群体进行分子标记检测,位于3DL的SSR标记barc71与该抗病基因连锁,遗传距离为3.0 c M。Leaf rust is one of the most severe fungal diseases in wheat,causing dramatic yield loss in wheat production worldwide. Wheat line 19HRWSN-76 showed resistance to major Puccinia triticina races in China. This line was crossed with susceptible wheat line Zhengzhou 5389 for further genetic research. By evaluating the infection type of leaf rust race FHJP on the segregating F2 population,a single dominant resistance locus was identified and temporally designated as Lr HR76. By screening SSR makers,the resistance locus of wheat line 19HRWSN-76 was located on chromosome 3DL. The genetic distance between Lr HR76 and barc71 is 3. 0 c M.

关 键 词：小麦 抗叶锈病基因 SSR 分子作图 

分 类 号：S512.1[农业科学—作物学]