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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Association mapping for quality traits in soft winter wheat
Theoretical and Applied Genetics, Volume 122, No. 5, Year 2011
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Description
Improvement of end-use quality in bread wheat (Triticum aestivum L.) depends on a thorough understanding of the genetic basis of important quality traits. The main goal of our study was to investigate the genetic basis of 1,000-kernel weight, protein content, sedimentation volume, test weight, and starch concentration using an association mapping approach. We fingerprinted 207 diverse European elite soft winter wheat lines with 115 SSR markers and evaluated the genotypes in multi-environment trials. The principal coordinate analysis revealed absence of a clear population but presence of a family structure. Therefore, we used linear mixed models and marker-based kinship matrices to correct for family structure. In genome-wide scans, we detected main effect QTL for all five traits. In contrast, epistatic QTL were only observed for sedimentation volume and test weight explaining a small proportion of the genotypic variation. Consequently, our findings suggested that integrating epistasis in marker-assisted breeding will not lead to substantially increased selection gain for quality traits in soft winter wheat. © 2010 Springer-Verlag.
Authors & Co-Authors
Reif, Jochen C.
Germany, Stuttgart
Universität Hohenheim
Gowda, Manje S.
Germany, Stuttgart
Universität Hohenheim
Maurer, Hans Peter
Germany, Stuttgart
Universität Hohenheim
Longin, Carl Friedrich Horst
Germany, Stuttgart
Universität Hohenheim
Korzun, V. N.
Unknown Affiliation
Ebmeyer, Erhard
Unknown Affiliation
Würschum, Tobias
Germany, Stuttgart
Universität Hohenheim
Statistics
Citations: 126
Authors: 7
Affiliations: 1
Identifiers
Doi:
10.1007/s00122-010-1502-7
ISSN:
00405752
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study