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Seed germination of six coastal plant species of the Baltic region: effect of salinity and dormancy-breaking treatments

Published online by Cambridge University Press:  01 September 2008

Jevgenija Necajeva  and
Gederts Ievinsh
Jevgenija Necajeva*
Affiliation:
Department of Plant Physiology, Faculty of Biology, University of Latvia, 4 Kronvalda Boulevard, LV-1586Riga, Latvia
Gederts Ievinsh
Affiliation:
Department of Plant Physiology, Faculty of Biology, University of Latvia, 4 Kronvalda Boulevard, LV-1586Riga, Latvia
*
*Correspondence Email: sb20025@lanet.lv
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Abstract

Seed salinity tolerance and dormancy play important roles in germination behaviour. The effects of NaCl concentration and different dormancy-breaking treatments on germination were determined for six species growing on the coasts of the Baltic Sea or the Gulf of Riga: Juncus balticus, Triglochin maritima, Triglochin palustre, Anthyllis maritima, Linaria vulgaris and Linaria loeselii. Germination percentages were significantly reduced at NaCl concentrations >100 mM. Germination of J. balticus, T. maritima and T. palustre, but not that of A. maritima and L. vulgaris, recovered after seeds were rinsed with distilled water. Seeds of J. balticus were non-dormant; those of A. maritima had physical dormancy; and those of T. palustre, T. maritima, L. loeselii and L. vulgaris had non-deep to intermediate physiological dormancy, which was broken by cold stratification or gibberellic acid. The seeds of plants growing in habitats periodically exposed to sea water (coastal meadows) were characterized by greater salinity tolerance than seeds of plants growing in habitats less exposed to sea water (dunes).

Keywords

Anthylliscold stratificationJuncusLinariaNaClTriglochin
Type
Short Communication
Information
Seed Science Research , Volume 18 , Issue 3 , September 2008 , pp. 173 - 177
Copyright
Copyright © Cambridge University Press 2008

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References

Baskin, C.C. and Baskin, J.M. (1998) Seeds: ecology, biogeography, and evolution of dormancy and germination. San Diego, Academic Press.Google Scholar
Baskin, J.M. and Baskin, C.C. (2004) A classification system for seed dormancy. Seed Science Research 14, 1–16.CrossRefGoogle Scholar
Hsiao, A.I. and Vidaver, W. (1970) Water content and phytochrome-induced potential germination responses in lettuce seeds. Plant Physiology 47, 186–188.CrossRefGoogle Scholar
Juan, R., Pastor, J. and Fernandez, I. (1999) Morphological and anatomical studies of Linaria species from South-west Spain: seeds. Annals of Botany 84, 11–19.CrossRefGoogle Scholar
Khan, M.A. and Ungar, I.A. (2001) Seed germination of Triglochin maritima influenced by salinity and dormancy relieving compounds. Biologia Plantarum 44, 301–303.CrossRefGoogle Scholar
Masuda, M., Maki, M. and Yahara, T. (1999) Effects of salinity and temperature on seed germination in a Japanese endangered halophyte Triglochin maritimum (Juncaginaceae). Journal of Plant Research 112, 457–461.CrossRefGoogle Scholar
Nikolaeva, M.G., Rasumova, M.V. and Gladkova, V.N. (1985) Reference book on dormant seed germination (in Russian). Leningrad, Nauka.Google Scholar
Sharma, P.C. and Kumar, P. (1999) Alleviation of salinity stress during germination in Brassica juncea pre-sowing chilling treatments to seeds. Biologia Plantarum 42, 451–455.CrossRefGoogle Scholar
Woodell, S.R.J. (1985) Salinity and seed germination patterns in coastal plants. Plant Ecology 61, 223–229.CrossRefGoogle Scholar