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Publication Type J
Authors Khan, M. A. and I. A. Ungar
Title Germination of the salt tolerant shrub Suaeda fruticosa from Pakistan: salinity and temperature responses
Source Seed Science and Technology
Abstract Suaeda fruticosa, a leaf succulent perennial in the family Chenopodiaceae, is widely distributed in the salt marshes and salt deserts of Karachi, Pakistan. We are reporting here the effect of salinity and thermoperiod on the percentage germination and recovery of germination of Suaeda fruticosa after exposure to salinity under laboratory conditions. Cumulative germination percentages decreased with an increase in salinity. Seed germination occurred up to the 400 mM NaCl treatment. A 12h 15 degrees C/25 degrees C thermoperiod was more suitable for germination than the higher(12h 25 degrees C/35 degrees C) and lower(12h 10 degrees C/20 degrees C) thermoperiod. When ungerminated seeds from all thermoperiods were transferred to distilled water after 20 days of exposure to salinity, they initiated germinated in 48h. There was up to 80% recovery of germination for seeds that initially did not germinate in 500 mM NaCl. Seeds exposed to the low thermoperiod (12h 10 degrees C/20 degrees C) demonstrated a higher priming effect from salinity exposure than did those in the high thermoperiod (12h 25 degrees C/35 degrees C).
Year Published 1998
Volume 26
Issue 3
Beginning Page 657-667
Unique Article Identifier ISI:000079879100010
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