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Publication Type J
Authors Gulzar, S., M. A. Khan and I. A. Ungar
Title Salt tolerance of a coastal salt marsh grass
Source Communications in Soil Science and Plant Analysis
Language English
Author Keywords grass halophyte Karachi salt tolerance Urochondra setulosa water relations chemical-composition perennial halophyte water-content ion content salinity growth accumulation turfgrasses physiology mechanisms Agriculture Plant Sciences Chemistry
Abstract Growth, water and osmotic relations were examined in the halophytic perennial grass Urochondra setulosa (Trip.) C.E. Hubbard from a population located on the coast of Arabian Sea near Karachi, Pakistan. Urochondra setulosa plants were grown in 0, 200, 400, 600, 800, and 1000 mM NaCl in a sand culture using sub-irrigation. Number of leaves and tillers, root length and shoot length, fresh weight and dry weight of roots and shoots were highest in the non-saline control and decreased with an increase in salinity. Some plants survived in salinities above 600 mM NaCl, but their growth was stunted and mortality was high. Maximum succulence as estimated from plant water content was found in 0 mM NaCl. Water potential, osmotic potential and stomatal conductance became more negative with an increase in salinity, while pressure potential decreased with increasing salinity. Percentage ash content of shoots did not vary with increases in salinity. Na+ and Cl- levels increased in shoots while K+ concentration decreased with increases in salinity.
Author Address Ohio Univ, Dept Environm & Plant Biol, Athens, OH 45701 USA. Univ Karachi, Dept Bot, Karachi 75270, Pakistan. Ungar, IA (reprint author), Ohio Univ, Dept Environm & Plant Biol, Athens, OH 45701 USA.
ISSN 0010-3624
ISBN 0010-3624
29-Character Source Abbreviation Commun. Soil Sci. Plant Anal.
Year Published 2003
Volume 34
Issue 17-18
Beginning Page 2595-2605
Digital Object Identifier (DOI) 10.1081/css-120024787
Unique Article Identifier WOS:000185773700014
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