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Mapping and QTL analysis of the barley population Sloop × Halcyon

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Read, B.J., Raman, H., McMichael, G., Chalmers, K.J., Ablett, G.A., Platz, G.J., Raman, R., Genger, R.K., Boyd, W.J.R., Li, C.D., Grime, C.R., Park, R.F., Wallwork, H., Prangnell, R. and Lance, R.C.M. (2003) Mapping and QTL analysis of the barley population Sloop × Halcyon. Australian Journal of Agricultural Research, 54 (12). pp. 1145-1153.


Article Link: http://dx.doi.org/10.1071/AR03037

Publisher URL: http://www.publish.csiro.au


A genetic linkage map of Hordeum vulgare L. 1280 cM in length, composed of 257 AFLP, RFLP, SNP, and microsatellite markers, has been constructed. The map was based on a doubled haploid population made from the cross Sloop (spring type) × Halcyon (winter type). The genetic map was used to identify qualitative major genes and quantitative trait loci (QTLs) affecting traits related to growth and flowering, grain colour, and disease resistance.

Nine QTLs associated with grain colour (brightness, redness, yellowness, blue aleurone colour), plant height, 'intrinsic lateness', awn emergence, response to photoperiod, and spring or winter habit were located on 1H, 2H, 3H, 4H, and 5H. Eight QTLs associated with resistance to scald, net form of net blotch, leaf rust and powdery mildew were identified on chromosomes 1H, 2H, 3H, 4H, 5H, and 7H. The estimated magnitude of the QTL effects ranged from 9 to 85% of the total phenotypic variance. Resistances to leaf scald, net blotch, and leaf rust, and photoperiod and grain colour, were each controlled by at least one major gene.

Item Type:Article
Corporate Creators:Department of Employment, Economic Development and Innovation (DEEDI), Agri-Science, Crop and Food Science
Business groups:Crop and Food Science
Additional Information:Reproduced with permission from © CSIRO Publishing. Access to published version may be available via Publisher’s website.
Keywords:Linkage map; molecular markers; disease resistance; phenology; grain colour; validation.
Subjects:Plant culture > Field crops > Barley
Science > Biology > Genetics > Quantitative genetics (esp. Quantitative Trait Loci (QTL) articles)
Live Archive:08 Jun 2004
Last Modified:03 Sep 2021 16:43

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