Effects of External Concentration of (K+ + Na+) and K+/Na+ on the Growth and Ion Relations of Atriplex amnicola

Z. Aslam; E.G. Barrett-Lennard; H. Greenway

doi:10.1016/S0176-1617(88)80142-1

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Effects of External Concentration of (K+ + Na+) and K+/Na+ on the Growth and Ion Relations of Atriplex amnicola

Journal article

Peer reviewed

Effects of External Concentration of (K+ + Na+) and K+/Na+ on the Growth and Ion Relations of Atriplex amnicola

Z. Aslam, E.G. Barrett-Lennard and H. Greenway

Journal of Plant Physiology, Vol.133(2), pp.228-234

1988

DOI: https://doi.org/10.1016/S0176-1617(88)80142-1

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Abstract

This paper reports on the growth and ion relations of Atriplex amnicola in response to different K+/ Na+ in nutrient solutions containing either 40 or 400 mol m-3 (K+ + Na+)C1-. Growth was substantially lower at 400 than at 40 mol m-3 external (K+ + Na+)Cl-. At 40 mol m-3 (K+ + Na+)Cl-, growth of A. amnicola did not differ at K+/Na+ of 0.025, 0.333, and 1.0 in the nutrient solution. At 400 mol m-3 (K+ + Na+)Cl , growth was substantially decreased at a K+/Na+ of 1.0 in the nutrient solution compared with lower K+/Na+. Although the [K+] and [Na+] in different plant parts were related to the K+/Na+ in the external solution, the [K+ + Na+] was generally not affected by K+/Na+ in the external medium. The single exception to this observation was at 400 mol m-3 (K+ + Na+)Cl-, when the [K+ +Na+] in the shoots was substantially higher at a K+/Na+ of 1.0 than at lower K+/Na+. In general, K+/Na+ was highest in the apical root segments (10–12 mm long), lower in the bulk roots and lowest in the leaves.

Details

Title: Effects of External Concentration of (K+ + Na+) and K+/Na+ on the Growth and Ion Relations of Atriplex amnicola
Authors/Creators: Z. Aslam (Author/Creator) - The University of Western Australia
E.G. Barrett-Lennard (Author/Creator) - The University of Western Australia
H. Greenway (Author/Creator) - The University of Western Australia
Publication Details: Journal of Plant Physiology, Vol.133(2), pp.228-234
Publisher: Elsevier GmbH
Identifiers: 991005544390207891
Copyright: © 1988 Gustav Fischer Verlag, Stuttgart.
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Citation topics: 3 Agriculture, Environment & Ecology; 3.4 Crop Science; 3.4.49 Plant Stress Responses
Web Of Science research areas: Plant Sciences
ESI research areas: Plant & Animal Science