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Chromosomal location of a K/Na discrimination character in the D genome of wheat |
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| Authors: | J Gorham C Hardy R G Wyn Jones L R Joppa C N Law |
| Institution: | (1) Centre for Arid Zone Studies, Department of Biochemistry and Soil Science, University College of North Wales, LL57 2UW Bangor, Gwynedd, Wales, UK;(2) United States Department of Agriculture, Agricultural Research Service, North Dakota State University, 58105-5051 Fargo, ND, USA;(3) Plant Breeding Institute, Maris Lane, CB2 2LQ Trumpington, Cambridge, UK |
| Abstract: | Summary K/Na ratios have been determined in the leaves of salt-treated plants of 14 disomic substitution lines in which each of the D-genome chromosomes replaces the homoeologous A- or B-genome chromosome in the tetraploid wheat variety Langdon (AABB genome). Aneuploid lines of hexaploid bread wheat (cv Chinese Spring) having a reduced or an enhanced complement of chromosome 4D have also been examined. These investigations show that the gene(s) determining K/Na ratios in the leaves of wheat plants grown in the presence of salt is located on the long arm of chromosome 4D. |
| Keywords: | Triticum aestivum T turgidum Aegilops squarrosa Cation uptake D genome |
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