Abstract
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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bamakhramah, H.S., Halloran, G.M., Wilson, J.H. (1984) Components of yield in diploid, tetraploid and hexaploid wheats (Triticum spp.). Ann Bot.54, 51–60
Davis, R.F. (1984) Sodium fluxes in intact roots of wheat varieties differing in salt tolerance. In: Membrane transport in plants, pp. 489–490, Cram, W.J., Janacek, K., Rybova, R., Sigler, K. eds. Academia, Praha
Francois, L.E., Maas, E.V., Donovan, T.J., Youngs, V.L. (1986) Effect of salinity on grain yield and quality, vegetative growth, and germination of semi-dwarf and durun wheat. Agron. J.78, 1053–1058
Gorham, J., Wyn Jones, R.G. (1989) A physiologists approach to improving the salt tolerance of wheat. Rachis (in press)
Gorham, J., Hardy, C., Wyn Jones, R.G., Joppa, L.R., Law, C.N. (1987) Chromosomal location of a K/Na discrimination character in the D genome of wheat. Theor. Appl. Genet.74, 584–588
Jeschke, W.D. (1983) Cation fluxes in excised and intact roots in relation to specific and varietal differences. In: Genetics aspects of plant nutrition, pp. 71–86, Saric, M.R., Loughman, B.C., eds. Nijhoff, The Hague, Netherlands
Jeschke, W.D., Jambor, W. (1981) Determination of unidirectional sodium fluxes in roots of intact sunflower seedlings. J. Exp. Bot.32, 1257–1272
Jeschke, W.D., Nassery, H. (1981) K+−Na+ selectivity in roots ofTriticum, Helianthus andAllium. Physiol. Plant.52, 217–224
Joppa, L.R. (1987) Aneuploid analysis in tetraploid wheat. In: Wheat and wheat improvement, pp. 151–166, Heyne, E.G., ed. Monograph 13, Am. Soc. Agron, Madison, Wis., USA
Joppa, L.R., Williams, N.D. (1988) Langdon durum disomic substitution lines and aneuploid analysis in tetraploid wheat. Genome30, 222–228
Joshi, Y.C., Dwivedi, R.S., Quadar, A., Bal, A.R. (1982) Salt tolerance in diploid, tetraploid and hexaploid wheat. Ind. J. Plant Physiol.25, 421–422
Kingsbury, R.W., Epstein, E. (1986) Salt sensitivity in wheat. A case for specific ion toxicity. Plant Physiol.80, 651–654
Maas, E.V. (1986) Crop tolerance to saline soil and water. In: Prospects for biosaline research (Proc. U.S.-Pakistan Biosaline Workshop) pp. 205–219, Ahmad, R., San Pietro, A., eds. Karachi University, Pakistan
McIntosh, R.A. (1973) A catalogue of gene symbols for wheat. In: Proc. 4th Int. Wheat Genet. Symp., pp. 893–938. University of Columbia, Mo. USA
Rana, R.S. (1986) Genetic diversity for salt-stress resistance of wheat in India. Rachis5, 32–37
Rana, R.S., Singh, K.N., Ahuja, P.S. (1980) Chromosomal variation and plant tolerance to sodic and saline soils. In: Symposium papers (Int. Symp. Salt-affected Soil), pp. 487–493, Central Soil Salinity Research Inst., Karnal, India
Rashid, A. (1986) Mechanisms of salt tolerance in wheat. PhD thesis, University of Agriculture, Faisalabad, Pakistan
Sayed, H.I. (1985) Diversity of salt tolerance in a germplasm collection of wheat (Triticum spp.). Theor. Appl. Genet.69, 651–657
Shah, S.H., Gorham, J., Forster, B.P., Wyn Jones, R.G. (1987) Salt tolerance in the Triticeae: The contribution of the D genome to cation selectivity in wheat. J. Exp. Bot.36, 254–269
Tal, M., Benzioni, A. (1977) Ion imbalance inCapsicum annuum, scabrous diminutive, a wilty mutant of pepper. I. Sodium fluxes. J. Exp. Bot.28, 1337–1341
Weimberg, R. (1987) Solute adjustment in leaves of two species of wheat at two different stages of growth in response to salinity. Physiol. Plant.70, 381–388
Weimberg, R. (1988) Modification of foliar solute concentrations by calcium in two species of wheat stressed with sodium chloride and/or potassium chloride. Physiol. Plant.73, 418–425
Wyn Jones, R.G., Gorham, J. (1989) Physiological effects of salinity. Scope for genetic improvement. In: Proc. Int. Symp. on Improving Winter Cereals under Temperature and Salinity Stresses, Cordoba, 1987. ICARDA, Syria (in press)
Yeo, A.R., Flowers, T.J. (1986) Salinity resistance in rice (Oryza sativa L.) and a pyramiding approach to breeding varieties for saline soils. Aust. J. Plant Physiol.13, 161–173
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gorham, J., Jones, R.G.W. & Bristol, A. Partial characterization of the trait for enhanced K+−Na+ discrimination in the D genome of wheat. Planta 180, 590–597 (1990). https://doi.org/10.1007/BF02411458
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02411458