Molecular Breeding

, Volume 34, Issue 1, pp 59–73

Quantitative trait loci of barley malting quality trait components in the Stellar/01Ab8219 mapping population

Authors

  • Emir Islamovic
    • USDA ARS
    • Limagrain Cereal Seeds
  • Allen D. Budde
    • USDA ARS Cereal Crop Research Unit
  • Mark Schmitt
    • USDA ARS Cereal Crop Research Unit
  • Robert BrunickII
    • MillerCoors
  • Andrzej Kilian
    • Diversity Arrays Technology
  • Shiaoman Chao
    • USDA ARS
  • Gerard R. Lazo
    • USDA ARS
  • Juliet M. Marshall
    • Department of Plant, Soil, and Entomological SciencesUniversity of Idaho
  • Eric N. Jellen
    • Department of Plant and Wildlife SciencesBrigham Young University
  • Peter J. Maughan
    • Department of Plant and Wildlife SciencesBrigham Young University
  • Gongshe Hu
    • USDA ARS
  • Kathy E. Klos
    • USDA ARS
  • Ryan H. Brown
    • General Mills, Inc.
  • Eric W. Jackson
    • General Mills, Inc.
Article

DOI: 10.1007/s11032-014-0017-3

Cite this article as:
Islamovic, E., Obert, D.E., Budde, A.D. et al. Mol Breeding (2014) 34: 59. doi:10.1007/s11032-014-0017-3

Abstract

Malting barley is of high economic and scientific importance. Determining barley grains that are suitable for malting involves measuring malting quality, which is an expensive and complex process. In order to decrease the cost of phenotyping and accelerate the process of developing superior malting barley cultivars, markers for marker-assisted breeding are needed. In this study, we identified quantitative trait loci (QTLs) for malting traits in a Stellar/01Ab8219 F6:8 recombinant inbred line population grown at Aberdeen and Tetonia, Idaho, USA in 2009 and 2010. We identified QTLs associated with malt extract (ME), wort protein, soluble/total protein (S/T), diastatic power (DP), alpha-amylase, beta-glucan (BG) and free amino nitrogen (FAN) at a logarithm of odds score ≥2.5 using a high-density genetic map produced by merging Diversity Arrays Technology markers with the current single nucleotide polymorphism map. Novel QTLs were identified for DP and FAN on chromosome 5H, S/T on 6H, and BG and ME on 7H. Dissection of the genetic regions associated with malting traits suggests the involvement of multiple molecular pathways. The resulting molecular markers may prove useful for barley improvement.

Keywords

Molecular markersGenetic linkage mapQTL mappingBarleyMaltDiastatic powerSoluble/total proteinFree amino nitrogenAmylase

Supplementary material

11032_2014_17_MOESM1_ESM.docx (15 kb)
Supplementary material 1 (DOCX 14 kb)
11032_2014_17_MOESM2_ESM.docx (14 kb)
Supplementary material 2 (DOCX 14 kb)

Copyright information

© Springer Science+Business Media Dordrecht 2014