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Publication Type B
Authors Gul, B., M. A. Khan and D. J. Weber
Book Author R. Ahmad and K. A. Malik
Editors R. Ahmad and K. A. Malik
Title Salt tolerance in Salicornia rubra from a salt playa of Great Basin Desert
Source Prospects for Saline Agriculture
Author Keywords germination growth ions recovery salinity seed-germination ion relations salinity growth temperature halophyte plants accumulation responses mechanisms
Abstract Salicornia rubra Nels. (Chenopodiaceae) is a stem succulent annual species widely distributed in the saline pans of Northern Utah playas. Salicornia rubra showed 98% germination in non-saline controls, at higher thermperiod (25-35degreesC) compared to less than 50% germination at the lower thermoperiod (5-15degreesC). Seed germination was inhibited with the increases in salinity and few seed germinated at 1000 mM NaCl. Rate of germination also decreased with an increase in salinity. Exposure of the seeds to high salt concentration (800 and 1000 mM NaCl) had a priming effect on the seed germination. Optimal growth of S. rubra plants was recorded at 200 mM NaCl and the growth declined with a further increase in salinity. Most plants survived at 1000 mM NaCl treatment, Na+ and Cl- contents of plants increased with an increase in salinity, while calcium (Ca2+), Magnesium (Mg2+) and Potassium (K+) content decreased. Water potential of plants become more negative with the increase in salinity.
Author Address Univ Karachi, Dept Bot, Karachi 75270, Pakistan Gul, B (reprint author), Univ Karachi, Dept Bot, Karachi 75270, Pakistan
ISSN 1-4020-0620-9
ISBN 1-4020-0620-9
Year Published 2002
Volume 37
Beginning Page 365-375
Unique Article Identifier WOS:000178570400038
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