Partial characterization of the trait for enhanced K + -Na + discrimination in the D genome of wheat

The long arm of chromosome 4D of wheat (Triticum aestivum L.) contains a gene (or genes) which influences the ability of wheat plants to discriminate between Na+ and K+. This discrimination most obviously affects transport from the roots to the shoots, in which less Na+ and more K+ accumulate in tho...

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Bibliographic Details
Published in:Planta 1990-03, Vol.180 (4), p.590-597
Main Authors: Gorham, J., Jones, R.G. Wyn, Bristol, A.
Format: Article
Language:English
Subjects:
Adaptation to environment and cultivation conditions
Agronomy. Soil science and plant productions
Aneuploidy
Biological and medical sciences
Chromosomes
Disomics
Fundamental and applied biological sciences. Psychology
Genetics and breeding of economic plants
Genomes
Grains
Hexaploidy
Phenotypic traits
Plant physiology and development
Plants
Tetraploidy
Varietal selection. Specialized plant breeding, plant breeding aims
Water and solutes. Absorption, translocation and permeability
Wheat
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Summary:The long arm of chromosome 4D of wheat (Triticum aestivum L.) contains a gene (or genes) which influences the ability of wheat plants to discriminate between Na+ and K+. This discrimination most obviously affects transport from the roots to the shoots, in which less Na+ and more K+ accumulate in those plants which contain the long arm of chromosome 4D. Concentrations of Na+ and K+ in the roots, and Cl- concentrations in the roots and shoots, are not significantly affected by this trait, but Na+, K+ and Cl- contents of the grain are reduced. The trait operates over a wide range of salinities and appears to be constitutive. At the moment it is not possible to determine accurately the effect of this trait on growth or grain yield because the aneuploid lines which are available are much less vigorous and less fertile than their euploid parents.
ISSN:0032-0935
1432-2048
DOI:10.1007/bf02411458