Journal article
Mapping of novel salt tolerance QTL in an Excalibur × Kukri doubled haploid wheat population
Theoretical and Applied Genetics, Vol.131(10), pp.2179-2196
2018
Abstract
Soil salinity is a major limitation to cereal production. Breeding new salt-tolerant cultivars has the potential to improve cereal crop yields. In this study, a doubled haploid bread wheat mapping population, derived from the bi-parental cross of Excalibur × Kukri, was grown in a glasshouse under control and salinity treatments and evaluated using high-throughput non-destructive imaging technology. Quantitative trait locus (QTL) analysis of this population detected multiple QTL under salt and control treatments. Of these, six QTL were detected in the salt treatment including one for maintenance of shoot growth under salinity (QG(1–5).asl-7A), one for leaf Na+ exclusion (QNa.asl-7A) and four for leaf K+ accumulation (QK.asl-2B.1, QK.asl-2B.2, QK.asl-5A and QK:Na.asl-6A). The beneficial allele for QG(1–5).asl-7A (the maintenance of shoot growth under salinity) was present in six out of 44 mainly Australian bread and durum wheat cultivars. The effect of each QTL allele on grain yield was tested in a range of salinity concentrations at three field sites across 2 years. In six out of nine field trials with different levels of salinity stress, lines with alleles for Na+ exclusion and/or K+maintenance at three QTL (QNa.asl-7A, QK.asl-2B.2 and QK:Na.asl-6A) excluded more Na+ or accumulated more K+ compared to lines without these alleles. Importantly, the QK.asl-2B.2allele for higher K+ accumulation was found to be associated with higher grain yield at all field sites. Several alleles at other QTL were associated with higher grain yields at selected field sites.
Details
- Title
- Mapping of novel salt tolerance QTL in an Excalibur × Kukri doubled haploid wheat population
- Authors/Creators
- M.A. Asif (Author/Creator) - Australian Centre for Plant Functional GenomicsR.K. Schilling (Author/Creator) - Australian Centre for Plant Functional GenomicsJ. Tilbrook (Author/Creator) - Australian Centre for Plant Functional GenomicsC. Brien (Author/Creator) - Australian Centre for Plant Functional GenomicsK. Dowling (Author/Creator) - Australian Centre for Plant Functional GenomicsH. Rabie (Author/Creator) - University of South AustraliaL Short (Author/Creator) - Australian Centre for Plant Functional GenomicsC. Trittermann (Author/Creator) - Australian Centre for Plant Functional GenomicsA. Garcia (Author/Creator) - Australian Centre for Plant Functional GenomicsE.G. Barrett-Lennard (Author/Creator) - The University of Western AustraliaB. Berger (Author/Creator) - The University of AdelaideD.E. Mather (Author/Creator) - The University of AdelaideM. Gilliham (Author/Creator) - The University of AdelaideD. Fleury (Author/Creator) - Australian Centre for Plant Functional GenomicsM. Tester (Author/Creator) - Australian Centre for Plant Functional GenomicsS.J. Roy (Author/Creator) - Australian Centre for Plant Functional GenomicsA.S. Pearson (Author/Creator)
- Publication Details
- Theoretical and Applied Genetics, Vol.131(10), pp.2179-2196
- Publisher
- Springer Verlag
- Identifiers
- 991005545994207891
- Copyright
- © 2018 The Author(s)
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Metrics
69 File views/ downloads
40 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.49 Plant Stress Responses
- Web Of Science research areas
- Agronomy
- Genetics & Heredity
- Horticulture
- Plant Sciences
- ESI research areas
- Agricultural Sciences