Theoretical and Applied Genetics

, Volume 126, Issue 11, pp 2825–2834

Genetic mapping of QTL for resistance to Fusarium head blight spread (type 2 resistance) in a Triticum dicoccoides × Triticum durum backcross-derived population

  • Maria Buerstmayr
  • Abdallah Alimari
  • Barbara Steiner
  • Hermann Buerstmayr
Original Paper

DOI: 10.1007/s00122-013-2174-x

Cite this article as:
Buerstmayr, M., Alimari, A., Steiner, B. et al. Theor Appl Genet (2013) 126: 2825. doi:10.1007/s00122-013-2174-x

Abstract

Improvement of resistance to Fusarium head blight (FHB) is a continuous challenge for durum wheat breeders, particularly due to the limited genetic variation within this crop species. We accordingly generated a backcross-derived mapping population using the type 2 FHB resistant Triticum dicoccoides line Mt. Gerizim #36 as donor and the modern Austrian T. durum cultivar Helidur as recipient; 103 BC1F6:7 lines were phenotyped for type 2 FHB resistance using single-spikelet inoculations and genotyped with 421 DNA markers (SSR and AFLP). QTL mapping revealed two highly significant QTL, mapping to chromosomes 3A and 6B, respectively. For both QTL the T. dicoccoides allele improved type 2 FHB resistance. Recombinant lines with both favorable alleles fixed conferred high resistance to FHB similar to that observed in the T. dicoccoides parent. The results appear directly applicable for durum wheat resistance breeding.

Supplementary material

122_2013_2174_MOESM1_ESM.pdf (11 kb)
Supplementary material 1 (PDF 10 kb)
122_2013_2174_MOESM2_ESM.pdf (9 kb)
Supplementary material 2 (PDF 9 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Maria Buerstmayr
    • 1
  • Abdallah Alimari
    • 2
  • Barbara Steiner
    • 1
  • Hermann Buerstmayr
    • 1
  1. 1.BOKU-University of Natural Resources and Life Sciences, ViennaDepartment for Agrobiotechnology, TullnTullnAustria
  2. 2.Ministry of AgricultureNational Agricultural Research Center (NARC) JeninWest BankPalestine

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