Theoretical and Applied Genetics

, Volume 114, Issue 3, pp 569–584 | Cite as

Most significant genome regions involved in the control of earliness traits in bread wheat, as revealed by QTL meta-analysis

  • E. HanocqEmail author
  • A. Laperche
  • O. Jaminon
  • A. -L. Lainé
  • J. Le Gouis
Original Paper


Earliness is one of the most important adaptation traits in plant breeding. Our purpose was to identify the genome regions of bread wheat involved in the control of earliness and its three components: photoperiod sensitivity (PS), vernalization requirement (VR) and intrinsic earliness (IE). A QTL meta-analysis was carried out to examine the replicability of QTL across 13 independent studies and to propose meta-QTL (MQTL). Initial QTL were projected on a recent consensus map (2004). Quality criteria were proposed to assess the reliability of this projection. These criteria were based on the distances between markers in the QTL regions. Chromosomes of groups 2 and 5 had a greater incidence on earliness control as they carry the known, major genes Ppd and Vrn. Other chromosome regions played an intermediate role in earliness control: 4A [heading date (HD) Meta-QTL], 4B (HD MQTL), 2B (VR MQTL) and 5B (IE MQTL). Markers at this four MQTL should prove helpful in marker-assisted selection, to better control earliness.


Common Marker Head Date Photoperiod Sensitivity Vernalization Requirement Earliness Trait 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We would like to thank M. Bernard and M. R. Perretant from the INRA Centre in Clermont-Ferrand, France, for kindly supplying data on the heading date and genotyping of the Eurêka × Renan population and genotyping data on Apache × Ornicar population, respectively. We are particularly grateful to A. J. Worland of JIC, Norwich, UK, and his team for generously supplying Mercia × Mercia (Ciano 67–2D) seeds. G. Charmet, INRA, Clermont-Ferrand and M. Rousset, INRA, Le Moulon, as well as the reviewers, are also thanked for their valuable comments and suggestions concerning this work.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • E. Hanocq
    • 1
    Email author
  • A. Laperche
    • 1
    • 2
  • O. Jaminon
    • 1
  • A. -L. Lainé
    • 1
  • J. Le Gouis
    • 1
  1. 1.Unité Mixte de Recherche INRA/USTL 1281 “Stress abiotiques et différenciation des végétaux cultivés”, Estrées-MonsInstitut National de la Recherche Agronomique (INRA)Péronne CedexFrance
  2. 2.UMR 118 APBV INRA-AgroCampus RennesLe Rheu CedexFrance

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