Genome-wide association mapping for kernel and malting quality traits using hostorical European barley records

I.E. Matthies, M. Malosetti, M.S. Roder, F.A. van Eeuwijk

Research output: Contribution to journalArticleAcademicpeer-review

32 Citations (Scopus)

Abstract

Malting quality is an important trait in breeding barley (Hordeum vulgare L.). It requires elaborate, expensive phenotyping, which involves micro-malting experiments. Although there is abundant historical information available for different cultivars in different years and trials, that historical information is not often used in genetic analyses. This study aimed to exploit historical records to assist in identifying genomic regions that affect malting and kernel quality traits in barley. This genome-wide association study utilized information on grain yield and 18 quality traits accumulated over 25 years on 174 European spring and winter barley cultivars combined with diversity array technology markers. Marker-trait associations were tested with a mixed linear model. This model took into account the genetic relatedness between cultivars based on principal components scores obtained from marker information. We detected 140 marker-trait associations. Some of these associations confirmed previously known quantitative trait loci for malting quality (on chromosomes 1H, 2H, and 5H). Other associations were reported for the first time in this study. The genetic correlations between traits are discussed in relation to the chromosomal regions associated with the different traits. This approach is expected to be particularly useful when designing strategies for multiple trait improvements.
Original languageEnglish
Article numbere110046
Number of pages15
JournalPLoS ONE
Volume9
Issue number11
DOIs
Publication statusPublished - 2014

Keywords

  • marker-assisted selection
  • grain protein-content
  • hordeum-vulgare l.
  • doubled-haploid population
  • different germplasm groups
  • backcross-qtl analysis
  • linkage disequilibrium
  • spring barley
  • yield components
  • 2-row barley

Fingerprint Dive into the research topics of 'Genome-wide association mapping for kernel and malting quality traits using hostorical European barley records'. Together they form a unique fingerprint.

Cite this