Validation of molecular markers for new stem rust resistance genes in U.S. hard winter wheat

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Show simple item record Bernardo, Amy N. Bowden, Robert L. Rouse, Matthew N. Newcomb, Maria S. Marshall, David S. Bai, Guihua 2013-07-17T17:09:31Z 2013-07-17T17:09:31Z 2013-07-17
dc.description.abstract Stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), is one of the most serious diseases of wheat (Triticum aestivum L.) worldwide. The discovery of new Pgt races in Africa, Ug99 and its variants, brings a new threat to global wheat production. Pyramiding several stem rust resistance genes into adapted varieties as opposed to breeding varieties with a single resistance gene is considered a more effective method to combat new races, but the success of gene pyramiding depends on the availability of molecular markers tightly linked to resistance genes. Markers for Ug99-effective genes, Sr2, Sr22, Sr26, Sr32, Sr35, Sr39, and Sr40, were evaluated for usefulness in marker-assisted selection (MAS) of hard winter wheat (HWW) using 10 resistance gene donor lines, 17 recently released U.S. HWW varieties or breeding lines, and 20 advanced introgression lines. Markers XcsIH81-BM and XcsIH81-AG for Sr22, Xsr26#43 and XBE51879 for Sr26, Xbarc55 for Sr32, Xbarc51 for Sr35, Xrwg27 for Sr39, Xsr39#22r for Sr40, and csSr2-derived single nucleotide polymorphism (SNP) marker for Sr2 are diagnostic for the set of HWW accessions evaluated in this study. These markers should be useful in marker-assisted pyramiding of stem rust resistance genes to develop HWW cultivars with multiple gene resistance against Ug99 races. en_US
dc.language.iso en_US en_US
dc.relation.uri en_US
dc.rights Permission to archive granted by the Crop Science Society of America, June 17, 2013. en_US
dc.subject Stem rust en_US
dc.subject Puccinia graminis f. sp. tritici en_US
dc.subject Wheat en_US
dc.subject Gene pyramiding en_US
dc.subject Stem rust resistance en_US
dc.title Validation of molecular markers for new stem rust resistance genes in U.S. hard winter wheat en_US
dc.type Article (author version) en_US 2013 en_US
dc.citation.doi doi:10.2135/cropsci2012.07.0446 en_US
dc.citation.epage 764 en_US
dc.citation.issue 3 en_US
dc.citation.jtitle Crop Science en_US
dc.citation.spage 755 en_US
dc.citation.volume 53 en_US
dc.contributor.authoreid amy8 en_US
dc.contributor.authoreid rbowden en_US
dc.contributor.authoreid gbai en_US

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