Characterization of new loci for Hessian fly resistance in common wheat
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ORIGINAL PAPER
Characterization of new loci for Hessian fly resistance in common wheat Yuanfeng Hao • Sue E. Cambron • Zhenbang Chen • Yingying Wang • Daniel E. Bland • G. David Buntin • Jerry W. Johnson
Received: 6 September 2012 / Accepted: 16 December 2012 / Published online: 8 January 2013 Ó Springer-Verlag Berlin Heidelberg 2013
Abstract The discovery of several new loci for resistance to Hessian fly was reported here. QHf.uga-6AL, the late HR61 was recognized from wheat cultivar 26R61 on the distal end of 6AL with resistance to both biotypes E and vH13. It is the first gene or QTL found on this particular chromosome. QHf.uga-3DL and QHf.uga-1AL, physically assigned to the deletion bins 3DL2-0.27–0.81 and 1AL1-
Communicated by F. Ordon.
Electronic supplementary material The online version of this article (doi:10.1007/s00122-012-2037-x) contains supplementary material, which is available to authorized users. Y. Hao Z. Chen Y. Wang D. E. Bland J. W. Johnson (&) Department of Crop and Soil Sciences, University of Georgia, Griffin Campus, Griffin, GA 30223, USA e-mail: [email protected] Y. Hao e-mail: [email protected] Z. Chen e-mail: [email protected] Y. Wang e-mail: [email protected] D. E. Bland e-mail: [email protected] S. E. Cambron USDA-ARS, Crop Production and Pest Control Research Unit, Department of Entomology, Purdue University, West Lafayette, IN 47907, USA e-mail: [email protected] G. D. Buntin Department of Entomology, University of Georgia, Griffin Campus, Griffin, GA 30223, USA e-mail: [email protected]
0.17–0.61, respectively, were detected for resistance to biotype vH13. Both QTL should represent new loci for Hessian fly resistance and the latter was detectable only in the late seedling stage when tolerance was evident. In addition, QHf.uga-6DS-C and QHf.uga-1AS had minor effect and were identified from the susceptible parent AGS 2000 for resistance to biotype E and vH13, respectively. QHf.uga-6DS-C is different from the known gene H13 on 6DS and QHf.uga-1AS is different from H9 gene cluster on 1AS. These loci also might be new components of Hessian fly resistance, although their LOD values were not highly significant. The QTL detections were all conducted on a RIL mapping population of 26R61/AGS 2000 with good genome coverage of molecular markers. The strategy used in the current study will serve as a good starting point for the discovery and mapping of resistance genes including tolerance to the pest and the closely linked markers will certainly be useful in selecting or pyramiding of these loci in breeding programs.
Abbreviations DArT Diversity arrays technology LOD Logarithm of odds QTL Quantitative trait locus (loci) RIL Recombinant inbred line SSR Simple sequence repeat (microsatellite) 1AS The short arm of chromosome 1A 1AL The long arm of chromosome 1A 2AS The short arm of chromosome 2A 3DL The long arm of chromosome 3D 6AL The long arm of chromosome 6A 6DS The short arm of chromosome 6D 6DS-C The short arm of chromosome 6D near centromere
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Introduction The Hessian fly, Mayetiola de
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