A SSR Marker for Leaf Rust Resistance Gene Lr19 in Wheat  

作　　者：LI Xing YANG Wen-xiang LI Ya-ning LIU Da-qun YAN Hong-fei MENG Qing-fang ZHANG Ting 

机构地区：[1]Department of Plant Pathology, College of Plant Protection, Hebei Agricultural University/Biological Control Center of Plant Diseasesand Plant Pests of Hebei Province, Baoding 071001, P.R.China

出　　处：《Agricultural Sciences in China》2006年第2期111-115,共5页中国农业科学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China （30170602）.

摘　　要：Microsatellite was carded out in Thatcher, six near-isogenic lines and F2 progeny of TcLr19xThatcher to develop molecular markers for leaf rust resistance gene Lr19. Thirteen primer pairs were screened, of which one primer pair Xgwm44 displayed polymorphsim in the population of TcLr 19, Thatcher, and their F2 generations. One marker closed linked to Lr19 resistance trait was obtained, and was named Xgwm44139bp with the genetic distance 0.9 cM. The research shows that Lr19 has more potential in marker-assisted breeding programs in wheat and provides a step stone for mapping genetic map, physical map and the eventual cloning.Microsatellite was carded out in Thatcher, six near-isogenic lines and F2 progeny of TcLr19xThatcher to develop molecular markers for leaf rust resistance gene Lr19. Thirteen primer pairs were screened, of which one primer pair Xgwm44 displayed polymorphsim in the population of TcLr 19, Thatcher, and their F2 generations. One marker closed linked to Lr19 resistance trait was obtained, and was named Xgwm44139bp with the genetic distance 0.9 cM. The research shows that Lr19 has more potential in marker-assisted breeding programs in wheat and provides a step stone for mapping genetic map, physical map and the eventual cloning.

关 键 词：wheat leaf rust LR19 MICROSATELLITE 

分 类 号：S512.1[农业科学—作物学]