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Revealing the genetic architecture of FHB resistance in hexaploid wheat (Triticum aestivum L.) by QTL meta-analysis

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Abstract

Fusarium head blight (FHB) in wheat results in reduced yield and quality and in accumulation of mycotoxins. The objective of this study was to identify genomic regions in wheat involved in the control of FHB resistance applying a QTL meta-analysis approach by combining QTL of 30 mapping populations to propose independent meta-QTL (MQTL). A consensus map was created on which initial QTL were projected. Nineteen MQTL comprising 2–13 initial QTL with widely varying confidence intervals were found on 12 chromosomes. Some of them coincided with genomic regions previously identified (e.g. chromosomes 3BS, 6B), however, some MQTL were newly detected by this study. Separate analysis of populations with the same resistant parent showed a rather high consistency for the Chinese spring wheat donor ‘Sumai 3’, but little consistency for the Chinese donor ‘Wangshuibai’ and the Swiss donor ‘Arina’. According to our results breeders can in future (1) choose parents for crossing not comprising the same resistance loci or QTL intervals, (2) exploit new MQTL, and (3) select markers of some of these MQTL to be used in marker-assisted selection.

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Acknowledgments

The authors like to thank J.-B. Veyrieras for his help and advices to QTL meta-analyses. This project was financially supported by the Bundesministerium für Bildung und Forschung (BMBF, Bonn) and the KWS SAAT AG within the German-French-Spanish CEREHEALTH Consortium (Grant no: 0313992A). Responsibility for the content of this paper remains with the authors.

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  1. State Plant Breeding Institute, Universität Hohenheim (720), Fruwirthstraße 21, 70593, Stuttgart-Hohenheim, Germany

    Martin Löffler & Thomas Miedaner

  2. Plant Breeding, Technische Universität München, Am Hochanger 4, 85350, Freising, Germany

    Chris-Carolin Schön

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  1. Martin Löffler
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Correspondence to Martin Löffler.

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Löffler, M., Schön, CC. & Miedaner, T. Revealing the genetic architecture of FHB resistance in hexaploid wheat (Triticum aestivum L.) by QTL meta-analysis. Mol Breeding 23, 473–488 (2009). https://doi.org/10.1007/s11032-008-9250-y

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