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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 and Veterinary Sciences
Research Group:Crop and Pasture Production
Research Field:Crop and Pasture Improvement (Selection and Breeding)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Winter Grains and Oilseeds
Objective Field:Barley
Author:Johnson, P (Dr Peter Johnson)
Author:Zhou, M (Associate Professor Meixue Zhou)
ID Code:75890
Year Published:2012
Web of Science® Times Cited:30
Deposited By:Agricultural Science
Deposited On:2012-02-20
Last Modified:2013-05-13
Downloads:4 View Download Statistics

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