Scientia Agricultura Sinica ›› 2005, Vol. 38 ›› Issue (06): 1156-1159 .

• PLANT PROTECTION • Previous Articles     Next Articles

A SSR Marker for Leaf Rust Resistance Gene Lr19 in Wheat

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  1. 河北农业大学植物病理系
  • Received:2005-01-10 Revised:1900-01-01 Online:2005-06-10 Published:2005-06-10

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Abstract: Microsatellite was carried out in Thatcher, six near?isogenic lines and F2 progeny of TcLr19 × Thatcher 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 TcLr19, Thatcher, and their F2 generation. One marker closely linked to Lr19 resistance trait was obtained, and was named as Xgwm44139bp with the genetic distance 0.9 cM. The research shows that Lr19 has more potential in marker-assisted breeding programs in wheat and has leid a foundation for mapping genetic map, physical map and the eventual cloning.

Key words: Wheat leaf rust, Lr19, Microsatellite

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