Euphytica

, Volume 164, Issue 3, pp 769–777

Mapping chromosomal regions affecting flowering time in a spring wheat RIL population

  • F. Lin
  • S. L. Xue
  • D. G. Tian
  • C. J. Li
  • Y. Cao
  • Z. Z. Zhang
  • C. Q. Zhang
  • Z. Q. Ma
Article

DOI: 10.1007/s10681-008-9724-3

Cite this article as:
Lin, F., Xue, S.L., Tian, D.G. et al. Euphytica (2008) 164: 769. doi:10.1007/s10681-008-9724-3

Abstract

Flowering time is an important trait for the adaptation of wheat to its target environments. To identify chromosome regions associated with flowering time in wheat, a whole genome scan was conducted with five sets of field trial data on a recombinant inbred lines (RIL) population derived from the cross of spring wheat cultivars ‘Nanda 2419’ and ‘Wangshuibai’. The identified QTLs involved seven chromosomal regions, among which QFlt.nau-1B and QFlt.nau-2B were homoeologous to QFlt.nau-1D and QFlt.nau-2D, respectively. Nanda 2419, the earlier flowering parent, contributed early flowering alleles at five of these QTLs. QFlt.nau-1B and QFlt.nau-7B had the largest effects in all trials and were mapped to the Xwmc59.2Xbarc80 interval on chromosome 1BS and the Xgwm537Xgwm333 interval on 7BS. Most of the mapped QTL intervals were not coincident with known vernalization response or photoperiod sensitivity loci and QFlt.nau-1B seems to be an orthologue of EpsAm1. Four pairs of loci showed significant interactions across environments in determining flowering time, all of which involved QFlt.nau-1B. These findings are of significance to wheat breeding programs.

Keywords

Earliness per se Epistasis Flowering time QTL Wheat 

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • F. Lin
    • 1
  • S. L. Xue
    • 1
  • D. G. Tian
    • 1
  • C. J. Li
    • 1
  • Y. Cao
    • 1
  • Z. Z. Zhang
    • 1
  • C. Q. Zhang
    • 1
  • Z. Q. Ma
    • 1
    • 2
  1. 1.The Applied Plant Genomics Laboratory & National Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingChina
  2. 2.College of Agricultural SciencesNanjing Agricultural UniversityNanjingPeoples Republic of China

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