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- Title
AN ECOPHYSIOLOGICAL STUDY OF THE SALT SECRETION OF FOUR HALOPHYTES.
- Authors
Rozema, Jelte; Gude, Henk; Pollak, Gad
- Abstract
Plants of <em>Spartina anglica, Limonium vulgare, Armeria maritima and Glaux maritima</em> were collected in the field and grown on different concentrations of NaCl, KCl and CaCl2. Salt secretion, ion content, water content and transpiration rates were determined. The highest sodium secretion was found in <em>Spartina anglica</em>, a species from the most saline habitat; and a somewhat lower secretion rate in <em>Limonium vulgare</em>. The lowest rates were found in <em>Glaux maritima</em> and <em>Armeria maritima</em>. The sodium secretion efficiency, i.e. the ability to maintain an unchanged internal sodium content, was highest in <em>Spartina anglica. Spartina anglica</em> is the most successful in the removal of excessively absorbed salt, since it secretes 60% of the absorbed sodium. The values <em>Limonium vulgare, Glaux maritima</em> and <em>Armeria maritima</em> were 33, 20 and 4% respectively. The species studied differ in the preferential sequence of ion secretion as well as in secretion rate and efficiency. This preferential sequence of ion secretion seems to be similar in members of the same taxonomic group (Plumbaginaceae). The comparability of the secretion parameters is discussed with regard to morphological differences between the species.
- Subjects
ECOPHYSIOLOGY; CHLORIDE cells; HALOPHYTES; SPARTINA anglica; PLANT transpiration; PLUMBAGINACEAE
- Publication
New Phytologist, 1981, Vol 89, Issue 2, p201
- ISSN
0028-646X
- Publication type
Article
- DOI
10.1111/j.1469-8137.1981.tb07483.x