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Publication Type J
Authors Ungar, I. A.
Title Effect of salinity on seed germination, growth, and ion accumulation of Atriplex patula (Chenopodiaceae)
Source American Journal of Botany
Author Keywords Atriplex patula/growth/halophyte/ion content/salt tolerance/seeds/HALOPHYTES/COASTAL/PLANTS/PATTERNS
Abstract Seeds and seedlings of the halophyte Atriplex patula were exposed to 0-2% NaCl to determine the effect of salt stress on germination and growth. Seeds germinated and plants survived and grew in solutions of up to 2.0% NaCl. Both seed germination and dry mass production were negatively affected by increased salinity. Dry mass production declined to 1% of controls and seed germination to 17% of controls in the 2% NaCl treatments, indicating that seeds were less inhibited than growing plants. Also, recovery treatments indicated that high salinity did not permanently injure seeds. Percent ash, and Na+ and Cl- ions increased in shoots with each salt increment, while the K+ ion content decreased sharply. Atriplex patula is a facultative halophyte, and is limited to low and moderately saline sites because both seed germination and growth are severely reduced at salinities > 1% NaCl.
ISSN 0002-9122
ISBN 0002-9122
Year Published 1996
Volume 83
Issue 5
Beginning Page 604-607
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