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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Dissecting the genetic architecture of frost tolerance in Central European winter wheat
Journal of Experimental Botany, Volume 64, No. 14, Year 2013
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Description
Abiotic stress tolerance in plants is pivotal to increase yield stability, but its genetic basis is still poorly understood. To gain insight into the genetic architecture of frost tolerance, this work evaluated a large mapping population of 1739 wheat (Triticum aestivum L.) lines and hybrids adapted to Central Europe in field trials in Germany and finger-printed the lines with a 9000 single-nucleotide polymorphism array. Additive effects prevailed over dominance effects. A two-dimensional genome scan revealed the presence of epistatic effects. Genome-wide association mapping in combination with a robust cross-validation strategy identified one frost tolerance locus with a major effect located on chromosome 5B. This locus was not in linkage disequilibrium with the known frost loci Fr-B1 and Fr-B2. The use of the detected diagnostic markers on chromosome 5B, however, does not allow prediction of frost tolerance with high accuracy. Application of genome-wide selection approaches that take into account also loci with small effect sizes considerably improved prediction of the genetic variation of frost tolerance in wheat. The developed prediction model is valuable for improving frost tolerance because this trait displays a wide variation in occurrence across years and is therefore a difficult target for conventional phenotypic selection. © The Author 2013.
Authors & Co-Authors
Zhao, Yusheng
Germany, Gatersleben
Leibniz-institut Für Pflanzengenetik Und Kulturpflanzenforschung
Gowda, Manje S.
Germany, Stuttgart
Universität Hohenheim
Würschum, Tobias
Germany, Stuttgart
Universität Hohenheim
Longin, Carl Friedrich Horst
Germany, Stuttgart
Universität Hohenheim
Korzun, V. N.
Unknown Affiliation
Schachschneider, Ralf
Unknown Affiliation
Fernando, Rohan L.
United States, Ames
Iowa State University
Reif, Jochen C.
Germany, Gatersleben
Leibniz-institut Für Pflanzengenetik Und Kulturpflanzenforschung
Statistics
Citations: 63
Authors: 8
Affiliations: 5
Identifiers
Doi:
10.1093/jxb/ert259
ISSN:
14602431
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study