Molecular mapping and genetic fine-structure of the rym5 locus encoding resistance to different strains of the Barley Yellow Mosaic Virus Complex

A. Graner, S. Streng, A. Kellermann, A. Schiemann, E. Bauer, R. Waugh, B. Pellio, F. Ordon

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Abstract

The genetic structure of the rym5 locus was studied in a population comprising 391 doubled-haploid lines that were evaluated for resistance to two strains of Barley Yellow Mosaic Virus (BaYMV-1, 2) and to Barley Mild Mosaic Virus (BaMMV). The absence of recombinants that are able to differentiate between the reaction to these different bymoviruses provides evidence that rym5 is a complex locus, which is either composed of several closely linked genes or of an allelic series of a single gene. For marker-assisted introgression of this locus into adapted barley germplasm, a CAPS (cleaved amplified polymorphic sequence) and a microsatellite marker were developed that flank the gene at distances of 0.8 and 1.3% recombination, respectively.

Original languageEnglish
Pages (from-to)285-290
Number of pages6
JournalTheoretical and Applied Genetics
Volume98
Issue number2
DOIs
Publication statusPublished - 1 Jan 1999

Keywords

  • Disease resistance
  • Hordeum vulgate
  • Marker-assisted selection
  • Molecular markers
  • PCR

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