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Quantitative trait loci for salinity tolerance in barley (Hordeum vulgare L.)
Citation
Zhou, G and Johnson, P and Ryan, PR and Delhaize, E and Zhou, M, Quantitative trait loci for salinity tolerance in barley (Hordeum vulgare L.), Molecular Breeding: New Strategies in Plant Improvement, 29, (2) pp. 427-436. ISSN 1380-3743 (2012) [Refereed Article]
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Copyright Statement
Copyright 2011 Springer Science+Business Media B.V.
DOI: doi:10.1007/s11032-011-9559-9
Abstract
Salinity stress is a major limitation in barley production. Substantial genetic variation in tolerance occurs among genotypes of barley, so the development of salt-tolerant cultivars is a potentially effective approach for minimizing yield losses. The lack of economically viable methods for screening salinity tolerance in the field remains an obstacle to breeders, and molecular marker-assisted selection is a promising alternative. In this study, salinity tolerance
of 172 doubled-haploid lines generated from YYXT (salinity-tolerant) and Franklin (salinity-sensitive) was assessed in glasshouse trials during the vegetative phase. A high-density genetic linkage map was constructed from 76 pairs of simple sequence repeats and 782 Diversity Arrays Technology markers which spanned a total of 1,147 cM. Five significant quantitative trait loci (QTL) for salinity tolerance were identified on chromosomes 1H, 2H, 5H, 6H and 7H, accounting for more than 50% of the phenotypic variation. The tolerant variety, YYXT, contributed the tolerance to four of these QTL and Franklin
contributed the tolerance to one QTL on chromosome 1H. Some of these QTL mapped to genomic regions previously associated with salt tolerance in barley
and other cereals. Markers associated with the major QTL identified in this study have potential application for marker-assisted selection in breeding for
enhanced salt tolerance in barley.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | barley, quantitative trait loci, QTL, salinity |
| Research Division: | Agricultural, Veterinary and Food Sciences |
| Research Group: | Crop and pasture production |
| Research Field: | Crop and pasture improvement (incl. selection and breeding) |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Grains and seeds |
| Objective Field: | Barley |
| UTAS Author: | Johnson, P (Dr Peter Johnson) |
| UTAS Author: | Zhou, M (Professor Meixue Zhou) |
| ID Code: | 75890 |
| Year Published: | 2012 |
| Web of Science® Times Cited: | 54 |
| Deposited By: | Agricultural Science |
| Deposited On: | 2012-02-20 |
| Last Modified: | 2013-05-13 |
| Downloads: | 4 View Download Statistics |
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