Location of a gene regulating cold-induced carbohydrate production on chromosome 5A of wheat

G. Galiba, I. Kerepesi, J. W. Snape, J. Sutka

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Major changes in osmotic potential during cold acclimation are due to changes in sugar concentration, and there is a good correlation between sugar content and frost tolerance. The objective of the present study was to localize a gene(s) responsible for carbohydrate accumulation during cold acclimation on chromosome 5A of wheat using recombinant lines developed from the cross between the substitution lines Chinese Spring (Cheyenne 5A) and CS (Triticum spelta 5A). Previously, major genes influencing frost resistance (Frl) and vernalization requirement (Vrnll had been localized on the long arm of that chromosome. The T. spelta 5A chromosome carrying the Frl (frost-sensitive) allele for frost tolerance and the Vrnl (spring-habit) allele for vernalization requirement did not have a major effect on the sucrose and fructan contents in the Chinese Spring background. On the other hand, the presence of Cheyenne alleles for vernalization requirement, vrnl, and frost tolerance, frl, significantly increased sugar concentrations. A recombinant line thought to exhibit recombination between the Vrnl and Frl loci suggested that the gene regulating sucrose accumulation was closely associated with, or else represented a pleiotropic effect of, Vrnl, but was separable from the Frl locus.

Original languageEnglish
Pages (from-to)265-270
Number of pages6
JournalTheoretical and Applied Genetics
Issue number1-2
Publication statusPublished - Jul 1 1997


  • Carbohydrate
  • Frost resistance
  • Fructan
  • RFLP mapping
  • Sucrose
  • Wheat

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science
  • Genetics

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