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Type: Journal article
Title: Yield-related salinity tolerance traits identified in a nested association mapping (NAM) population of wild barley
Author: Saade, S.
Maurer, A.
Shahid, M.
Oakey, H.
Schmöckel, S.
Negraõ, S.
Pillen, K.
Tester, M.
Citation: Scientific Reports, 2016; 6(1):32586-1-32586-9
Publisher: Nature Publishing Group
Issue Date: 2016
ISSN: 2045-2322
Statement of
Stephanie Saade, Andreas Maurer, Mohammed Shahid, Helena Oakey, Sandra M. Schmöckel, Sónia Negrão, Klaus Pillen and Mark Tester
Abstract: Producing sufficient food for nine billion people by 2050 will be constrained by soil salinity, especially in irrigated systems. To improve crop yield, greater understanding of the genetic control of traits contributing to salinity tolerance in the field is needed. Here, we exploit natural variation in exotic germplasm by taking a genome-wide association approach to a new nested association mapping population of barley called HEB-25. The large population (1,336 genotypes) allowed cross-validation of loci, which, along with two years of phenotypic data collected from plants irrigated with fresh and saline water, improved statistical power. We dissect the genetic architecture of flowering time under high salinity and we present genes putatively affecting this trait and salinity tolerance. In addition, we identify a locus on chromosome 2H where, under saline conditions, lines homozygous for the wild allele yielded 30% more than did lines homozygous for the Barke allele. Introgressing this wild allele into elite cultivars could markedly improve yield under saline conditions.
Keywords: Hordeum; Flowers; Chromosome Mapping; Genotype; Quantitative Trait, Heritable; Polymorphism, Single Nucleotide; Agriculture; Genome-Wide Association Study; Salt Tolerance
Rights: © The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit
RMID: 0030063266
DOI: 10.1038/srep32586
Appears in Collections:Agriculture, Food and Wine publications

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