TY - JOUR
T1 - Genomic selection for durable stem rust resistance in wheat
AU - Rutkoski, Jessica E.
AU - Heffner, Elliot L.
AU - Sorrells, Mark E.
N1 - Funding Information:
Acknowledgements Support for the work of JR was provided by the USDA National Needs Graduate Fellowship Competitive Grant No. 2008-38420-04755 from the National Institute of Food and Agriculture, the Einaudi Center International Research Travel Grant, and the Jeanie Borlaug Women in Triticum Award. Support for the work of EH was provided by USDA National Needs Graduate Fellowship Competitive Grant No. 2005-38420-15785 from the National Institute of Food and Agriculture. Additional funding for this research was provided by USDA—NIFA National Research Initiative CAP grants No. 2005-05130, 2006-55606-16629, and by Hatch 149-402.
PY - 2011/5
Y1 - 2011/5
N2 - Inheritance of stem rust (caused by Puccinia graminis f. sp. tritici) resistance in wheat can be either qualitative or quantitative. While quantitative disease resistance is believed to be more durable, it is more difficult to evaluate if it is expressed only in mature plants, i. e. adult plant resistance (APR). Marker-assisted selection (MAS) methods for APR would be useful; however, the multigenic nature of APR impedes the use of MAS efforts that aim to pyramid only a few target genes. A promising alternative is genomic selection (GS), which utilizes genome-wide marker coverage to predict genotypic values for quantitative traits. In turn, GS can reduce the selection cycle length of a breeding program for traits like APR that could take several seasons to generate reliable phenotypes. In this paper, we describe the GS process for use in crop improvement, both specifically for APR and in general. We also propose a GS-based wheat breeding scheme for quantitative resistance to stem rust that, when compared to current breeding schemes, can reduce cycle time by up to twofold and facilitates pyramiding of major genes with APR genes. Thus, GS could be an important tool for achieving the Borlaug Global Rust Initiative's (BGRI) goal of developing durable stem rust resistance in wheat.
AB - Inheritance of stem rust (caused by Puccinia graminis f. sp. tritici) resistance in wheat can be either qualitative or quantitative. While quantitative disease resistance is believed to be more durable, it is more difficult to evaluate if it is expressed only in mature plants, i. e. adult plant resistance (APR). Marker-assisted selection (MAS) methods for APR would be useful; however, the multigenic nature of APR impedes the use of MAS efforts that aim to pyramid only a few target genes. A promising alternative is genomic selection (GS), which utilizes genome-wide marker coverage to predict genotypic values for quantitative traits. In turn, GS can reduce the selection cycle length of a breeding program for traits like APR that could take several seasons to generate reliable phenotypes. In this paper, we describe the GS process for use in crop improvement, both specifically for APR and in general. We also propose a GS-based wheat breeding scheme for quantitative resistance to stem rust that, when compared to current breeding schemes, can reduce cycle time by up to twofold and facilitates pyramiding of major genes with APR genes. Thus, GS could be an important tool for achieving the Borlaug Global Rust Initiative's (BGRI) goal of developing durable stem rust resistance in wheat.
KW - Adult plant resistance
KW - Durable resistance
KW - Genomic selection
KW - Puccinia graminis
KW - Quantitative resistance
KW - Wheat
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U2 - 10.1007/s10681-010-0301-1
DO - 10.1007/s10681-010-0301-1
M3 - Article
AN - SCOPUS:79953738813
SN - 0014-2336
VL - 179
SP - 161
EP - 173
JO - Euphytica
JF - Euphytica
IS - 1
ER -