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Type: Journal article
Title: Identification of salt tolerance QTL in a wheat RIL mapping population using destructive and non-destructive phenotyping
Author: Asif, M.A.
Garcia, M.
Tilbrook, J.
Brien, C.
Dowling, K.
Berger, B.
Schilling, R.K.
Short, L.
Trittermann, C.
Gilliham, M.
Fleury, D.
Roy, S.J.
Pearson, A.S.
Citation: Functional Plant Biology: an international journal of plant function, 2021; 48(2):131-140
Publisher: CSIRO Publishing
Issue Date: 2021
ISSN: 1445-4408
Statement of
Muhammad A. Asif, Melissa Garcia, Joanne Tilbrook, Chris Brien, Kate Dowling, Bettina Berger, Rhiannon K. Schilling, Laura Short, Christine Trittermann, Matthew Gilliham, Delphine Fleury, Stuart J. Roy and Allison S. Pearson
Abstract: Bread wheat (Triticum aestivum L.) is one of the most important food crops, however it is only moderately tolerant to salinity stress. To improve wheat yield under saline conditions, breeding for improved salinity tolerance of wheat is needed. We have identified nine quantitative trail loci (QTL) for different salt tolerance sub-traits in a recombinant inbred line (RIL) population, derived from the bi-parental cross of Excalibur × Kukri. This population was screened for salinity tolerance subtraits using a combination of both destructive and non-destructive phenotyping. Genotyping by sequencing (GBS) was used to construct a high-density genetic linkage map, consisting of 3236 markers, and utilised for mapping QTL. Of the nine mapped QTL, six were detected under salt stress, including QTL for maintenance of shoot growth under salinity (QG(1-5).asl-5A, QG(1-5).asl-7B) sodium accumulation (QNa.asl-2A), chloride accumulation (QCl.asl-2A, QCl.asl-3A) and potassium:sodium ratio (QK:Na.asl-2DS2). Potential candidate genes within these QTL intervals were shortlisted using bioinformatics tools. These findings are expected to facilitate the breeding of new salt tolerant wheat cultivars.
Keywords: Chloride; non-destructive phenotyping; potassium; salinity; shoot ion-independent tolerance; sodium; quantitative trait locus; wheat
Description: Published online 24 August 2020. Corrected by: Corrigendum to: Identification of salt tolerance QTL in a wheat RIL mapping population using destructive and non-destructive phenotyping. Muhammad A. Asif, et al. Functional Plant Biology 49(7) 672 - 672. In the Acknowledgements, the ARC Centre of Excellence funding number was incorrect. The correct funding number is: CE140100008.
Rights: Journal Compilation © CSIRO 2020 Open Access CC BY-NC-ND
DOI: 10.1071/fp20167
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