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Identification of Flanking Markers for the Stem Rust Resistance Gene Sr6 in Wheat
Author(s) -
Tsilo Toi J.,
Jin Yue,
Anderson James A.
Publication year - 2010
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2009.11.0648
Subject(s) - stem rust , biology , puccinia , genetics , population , gene , genetic marker , chromosome , identification (biology) , marker assisted selection , genetic linkage , botany , mildew , demography , sociology
The wheat ( Triticum aestivum L. and T. turgidum L.) stem rust resistance gene Sr6 confers a high level of resistance against a wide range of races of Puccinia graminis Pers.:Pers. f. sp. tritici Eriks. and E. Henn. in North America. In this study, we report the identification of flanking markers for Sr6 . We used a population of 139 recombinant inbred lines from the cross MN99394 × MN98550. A partial linkage map of chromosome 2D comprised Xgwm484 , Xcfd77 , Xcfd43 , Xwmc453 , Sr6 , XwPt_4381 , XwPt_0330 , Xgpw94049 , and Xgwm102 . Four markers mapped distal to Sr6 , while the other four were proximal within distances of 4.8 and 6.5 cM, respectively. Marker‐assisted selection and pyramiding of Sr6 with other stem rust resistance genes could benefit from the availability of Sr6 ‐flanking markers.