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

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...

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Bibliographic Details
Published in:Molecular breeding 2014-06, Vol.34 (1), p.59-73
Main Authors: Islamovic, Emir, Obert, Donald E, Budde, Allen D, Schmitt, Mark, Brunick, Robert II, Kilian, Andrzej, Chao, Shiaoman, Lazo, Gerard R, Marshall, Juliet M, Jellen, Eric N, Maughan, Peter J, Hu, Gongshe, Klos, Kathy E, Brown, Ryan H, Jackson, Eric W
Format: Article
Language:English
Subjects:
alpha-amylase
amino nitrogen
Barley
beta-glucans
Biomedical and Life Sciences
Biotechnology
Chromosomes
Cultivars
Diastatic power
economics
Gene mapping
genetic markers
Glucan
Hordeum vulgare
inbred lines
Inbreeding
Life Sciences
Malt
malt extract
malting
malting barley
malting quality
Mapping
marker-assisted selection
Markers
Molecular biology
Nucleotides
phenotype
Phenotyping
Plant biology
Plant breeding
Plant Genetics and Genomics
Plant Pathology
Plant Physiology
Plant Sciences
Polymorphism
Proteins
Quantitative trait loci
Single-nucleotide polymorphism
Wort
α-Amylase
β-Glucan
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Summary: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.
ISSN:1380-3743
1572-9788
DOI:10.1007/s11032-014-0017-3