Theoretical and Applied Genetics

, Volume 99, Issue 1, pp 199–202

Physical mapping of the Vrn-A1 and Fr1 genes on chromosome 5A of wheat using deletion lines

  • J. Sutka
  • G. Galiba
  • A. Vagujfalvi
  • B. S. Gill
  • J. W. Snape

DOI: 10.1007/s001220051225

Cite this article as:
Sutka, J., Galiba, G., Vagujfalvi, A. et al. Theor Appl Genet (1999) 99: 199. doi:10.1007/s001220051225

Abstract

 Homozygous deletion lines of wheat for 5AL, generated in the variety ‘Chinese Spring’, were tested for flowering time without vernalization and for frost resistance after cold hardening. It was found that the Vrn-A1 gene for vernalization requirement mapped between breakpoints 0.68 and 0.78, whilst the frost resistance gene Fr1 was flanked by deletion breakpoints 0.67 and 0.68. This confirms previous evidence that these genes are linked but are not the pleiotropic effect of a single gene. A comparison between the physical and genetic maps for Vrn-A1 and Fr1 shows that the linear order is identical. These results indicate that cytogenetically based physical maps of Vrn-A1 and Fr1 loci, together with genetic maps, could be useful in the further study of genome synteny and in elaborating a gene cloning strategy.

Key words WheatFrost resistanceVernalizationPhysical mapDeletion lines

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • J. Sutka
    • 1
  • G. Galiba
    • 1
  • A. Vagujfalvi
    • 1
  • B. S. Gill
    • 2
  • J. W. Snape
    • 3
  1. 1.Agricultural Research Institute of Hungarian Academy of Sciences, H2462 Martonvasar, HungaryHU
  2. 2.Department of Plant Pathology, Kansas State University, Manhattan, KS 66508-5502, USAUS
  3. 3.John Innes Centre, Norwich Research Park, Colney, Norwich, NR4 7UH, UK Fax: +44 1603 502241 E-mail: john.snape@bbsrc.ac.ukGB