Journal of Applied Genetics

, Volume 49, Issue 2, pp 127–134

A new diagnostic SSR marker for selection of theRym4/Rym5 locus in barley breeding

  • Mirosław Tyrka
  • Dragan Perovic
  • Agnieszka Wardyńska
  • Frank Ordon
Original Article

DOI: 10.1007/BF03195605

Cite this article as:
Tyrka, M., Perovic, D., Wardyńska, A. et al. J Appl Genet (2008) 49: 127. doi:10.1007/BF03195605

Abstract

Genomic sequence AY661558, representing a part of the BAC contig of theRym4/Rym5 locus conferring resistance to the barley yellow mosaic virus complex (BaMMV/BaYMV), was exploited in order to develop SSR markers for practical barley breeding. Out of 57 SSR motifs found within this sequence, primers were designed and tested for the 5 SSRs with the highest repeat length. The polymorphic SSR marker QLB1 co-segregated withrym4 andrym5 phenotypes in respective high-resolution mapping populations developed for the construction of the original BAC contig. The primers targeted 2 sites located 756 bp and 5173 bp downstream of the translation initiation factor 4E (Hv-eIF4E). Physical linkage of the QLB1 marker to theRym4/Rym5 locus was confirmed experimentally on Morex BAC 519J14, a seed BAC ofHv-eIF4E, and BAC 801A11, which is located proximally toHv-eIF4E. QLB1 revealed 7 alleles in a set of 100 winter barley lines and cultivars. Five alleles were found within 673 advanced breeding lines derived from applied Polish winter barley breeding programmes, which corresponds to a PIC value of 0.684. No recombinants betweenRym4/5 and QLB1 were detected, suggesting that QLB1 can be used efficiently in marker-assisted selection of theHv-eIF4E-mediated bymovirus resistance.

Keywords

BaMMV/BaYMVHordeum vulgare L.marker-assisted selectionRym4/Rym5SSRswinter barley

Copyright information

© Institute of Plant Genetics, Polish Academy of Sciences, Poznan 2008

Authors and Affiliations

  • Mirosław Tyrka
    • 1
  • Dragan Perovic
    • 2
  • Agnieszka Wardyńska
    • 1
  • Frank Ordon
    • 2
  1. 1.Laboratory of Population GeneticsPolonia UniversityCzęstochowaPoland
  2. 2.Federal Centre for Breeding Research on Cultivated PlantsInstitute of Epidemiology and Resistance ResourcesQuedlinburgGermany