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Publication Type J
Authors Egan, T. P., I. A. Ungar and J. F. Meekins
Title The effect of different salts of sodium and potassium on the germination of Atriplex prostrata (Chenopodiaceae)
Source Journal of Plant Nutrition
Author Keywords TRIANGULARIS WILLD/SALINITY
Abstract Seed germination and early growth of the halophyte Atriplex prostrata Boucher were measured to compare sodium chloride (NaCl) to other salts to determine if the inhibitory effects of salinity were osmotic or due to a specific ion inhibition. Seeds of A. Prostrata were germinated in solutions containing NaCl, potassium chloride (KCl), sodium sulfate (Na2SO4), and potassium sulfate (K2SO4) at concentrations with osmotic potentials equal to 0, -0.75, -1.0, and -1.5 MPa. Percent germination and shoot length was usually inhibited only at the lowest osmotic potential (-1.5 MPa). However, at -1.5 MPa the rate of germination was more inhibited by sodium salts than by potassium salts. Ungerminated seeds pretreated with salts had recovery germination percentages in distilled water that were equal to that of the freshwater controls indicating that the previous effect of these salts was due to osmotic inhibition rather than a specific ion toxicity.
ISSN 0190-4167
ISBN 0190-4167
Year Published 1997
Volume 20
Issue 12
Beginning Page 1723-1730
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