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Effects of thermoperiod on recovery of seed Germination of Halophytes from Saline Conditions
Author(s) -
Khan M. Ajmal,
Ungar Irwin A.
Publication year - 1997
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.2307/2446089
Subject(s) - germination , biology , halophyte , salinity , botany , soil salinity , distilled water , horticulture , apiaceae , ecology , chemistry , chromatography
Recovery of seed germination from NaCl salinity of desert shrubs ( Haloxylon recurvum and Suaeda fruticosa, and the herbs Zygophyllum simplex and Triglochin maritima was studied under various thermoperiods. The percentage of ungerminated seeds that recovered when they were transferred to distilled water varied significantly with variation in species and thermoperiods. Zygophyllum simplex had little recovery from all NaCl concentrations in all thermoperiods. Haloxylon recurvum, S. fruticosa, and T. maritima showed substantial recovery. Percentage recovery was highest in S. fruticosa, followed by T. maritima, and H. recurvum . Thermoperiodic effects varied with the species investigated. There was little thermoperiodic effect on the percentage recovery of S. fruticosa, except in the higher salinity treatment at higher thermoperiods. Variation in thermoperiod appears to play an important role in recovery of germination of halophytes from salt stress when seeds are transferred to distilled water.