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Publication Type J
Authors Ghars, M. A., A. Debez and C. Abdelly
Title Interaction between Salinity and Original Habitat during Germination of the Annual Seashore Halophyte Cakile Maritima
Source Communications in Soil Science and Plant Analysis
Author Keywords Cakile maritima germination halophyte salinity variability SEED-GERMINATION HALOXYLON-AMMODENDRON RADICLE GROWTH SEA-SALT TEMPERATURE CHENOPODIACEAE TOLERANCE LIGHT ESTABLISHMENT STRATEGIES
Abstract The impact of salinity (0-400mM NaCl) on the germination of four Tunisian accessions (Tabarka, Mahdia, Sfax, and Jerba) of the halophyte Cakile maritima was assessed. Moderate salinity (50-150mM NaCl) slightly inhibited the germination of Sfax, Mahdia, and Jerba seeds, since more than 75% of the sown seeds germinated. Salt adverse impact was more pronounced in Tabarka seeds, which showed significantly less germination capacity, even under salt-free conditions (40%). Although increasing salinity drastically inhibited the germination in Tabarka, Sfax was the most tolerant accession, especially at 200-300mM sodium chloride (NaCl). Assessing germination kinetics using a mathematical model indicated that high salinity impaired and delayed the germination process. Such an effect resulted from the combination of osmotic and toxic components, especially at the greatest concentrations (300-400mM NaCl). These findings point out that the successful establishment of this halophyte at the earliest ontogeny stages is both accession- and salt-dependent.
Author Address [Ghars, Mohamed Ali; Debez, Ahmed; Abdelly, Chedly] CBBC, Lab Adaptat Plantes Stresses Abiot, Hammam Lif 2050, Tunisia. [Ghars, Mohamed Ali] Univ Paris 06, PCMP, Ivry, France. Abdelly, C, CBBC, Lab Adaptat Plantes Stresses Abiot, Technopole Borj Cedria,BP 901, Hammam Lif 2050, Tunisia. chedly.abdelly@cbbc.rnrt.tn
ISSN 0010-3624
ISBN 0010-3624
29-Character Source Abbreviation Commun. Soil Sci. Plant Anal.
Year Published 2009
Volume 40
Issue 19-20
Beginning Page 3170-3180
Digital Object Identifier (DOI) 10.1080/00103620903261684
Unique Article Identifier ISI:000274285900013
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