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Publication Type J
Authors Zhang, H., L. J. Irving, Y. Tian and D. Zhou
Title Influence of salinity and temperature on seed germination rate and the hydrotime model parameters for the halophyte, Chloris virgata, and the glycophyte, Digitaria sanguinalis
Source South African Journal of Botany
Author Keywords Germination Halophyte Hydrotime model Recovery Salinity Temperature greasewood sarcobatus-vermiculatus salt tolerance water relations growth stress responses hordeum tomato grass
Abstract Effects of salinity, temperature and their interactions on final percentage and the rate of germination were evaluated for two grasses, the halophytic Chloris virgata and the glycophyte, Digitaria sanguinalis. Seeds were germinated in 0, 50, 100, 150, 200 and 250 mM NaCl solutions under constant temperatures of 15, 20, 25, 30 degrees C and alternating temperatures of 15/25 and 20/30 degrees C with a 12 h photoperiod. In D. sanguinalis, the hydrotime model described the time course of seed germination well; however, it provided a poor description of C. virgata germination. In both species, most of the un-germinated seeds transferred to distilled water were still viable. Results suggest that seeds take salt up, causing inhibition of germination at sub-toxic concentrations; however, when returned to pure water, this extra salt may be able to increase germination rates and percentages. (C) 2011 SAAB. Published by Elsevier B.V. All rights reserved.
Author Address [Zhang, H.; Zhou, D.] CAS, NE Inst Geog & Agroecol, Changchun 130012, Peoples R China. [Irving, L. J.] Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058752, Japan. [Tian, Y.] NE Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Peoples R China. Zhou, D (reprint author), CAS, NE Inst Geog & Agroecol, Changchun 130012, Peoples R China zhoudaowei@neigae.ac.cn
ISSN 0254-6299
ISBN 0254-6299
29-Character Source Abbreviation S. Afr. J. Bot.
Publication Date Jan
Year Published 2012
Volume 78
Beginning Page 203-210
Digital Object Identifier (DOI) 10.1016/j.sajb.2011.08.008
Unique Article Identifier WOS:000301016800026
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