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Publication Type J
Authors Bhatt, A., S. S. Phartyal and A. Nicholas
Title Ecological role of distinct fruit-wing perianth color in synchronization of seed germination in Haloxylon salicornicum
Source Plant Species Biology
Author Keywords germination Haloxylon salicornicum perianth color salinity tolerance temperature dimorphic seeds climate-change chenopodium-album saline conditions medicinal-plants halophyte seeds desert temperature salsola light
Abstract Haloxylon salicornicum is a perennial shrub that grows in sandy and stony desert areas. This species produces two types of dispersal unit with yellow and pink winged perianths that are wind dispersed. This species has been considered as an excellent sand binder and can tolerate extreme temperature, drought and salinity. We compared the germination characteristics of both colored dispersal units (with and without a wing) under various light, temperature and salinity treatments. It was found that wing color, presence of wings, temperature and light have a significant effect on germination percentage and germination rate. The presence of a winged perianth significantly reduced the germination percentage and germination rate in both yellow and pink dispersal units. De-winged yellow dispersal units were able to tolerate higher salinity and, therefore, their germination was higher in all the tested concentrations of NaCl compared with pink de-winged dispersal units. However, salinity tolerance in both pink and yellow dispersal units decreased with increasing salinity concentration. The germination-recovery percentage was also higher for yellow compared with pink dispersal units. The present study has demonstrated that both morphological and physiological differences exist in different colored dispersal units, which might represent the combination of different complementary adaptive strategies and have ecological significance for Haloxylon salicornicum's successful survival in harsh desert environmental conditions.
ISSN 0913-557X
ISBN 0913-557X
29-Character Source Abbreviation Plant Spec. Biol.
Publication Date Apr
Year Published 2017
Volume 32
Issue 2
Beginning Page 121-133
Digital Object Identifier (DOI) 10.1111/1442-1984.12133
Unique Article Identifier WOS:000398567300003

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