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Publication Type J
Authors El-Keblawy, A., S. Gairola and A. Bhatt
Title Maternal salinity environment affects salt tolerance during germination in Anabasis setifera: A facultative desert halophyte
Source Journal of Arid Land
Author Keywords Anabasis setifera facultative halophyte germination maternal salinity seed mass invasive prosopis-juliflora plant-growth regulators salicornia-europaea l seed-germination phenotypic plasticity temperature dimorphism stress light arabidopsis
Abstract The effects of maternal salinity and light incubation on the salinity tolerance of the facultative halophyte Anabasis setifera during their germination stages were assessed. Seeds were collected from non-saline habitats in Egypt and saline habitats in the United Arab Emirates (UAE). The seeds of the two populations were germinated in 0, 100, 200, 400, 600 and 800 mM NaCl, and incubated at 25 degrees C/15 degrees C in both 12-h light and 12-h darkness regimes and continuous darkness. Significantly more seeds germinated in the Egyptian population than in the UAE population. Salinity tolerance was significantly greater with the Egyptian population than with the UAE population, especially under the conditions of higher salinities. The difference in salinity tolerance between the seeds of two populations was attributed to their seed mass. In addition, germination was significantly faster for the Egyptian population than for the UAE population. Most of the saline treated seeds were able to recover their germination when transferred to distilled water, but this depended on their maternal salinity and light incubation. Recovery from higher salinities was significantly better for the seeds under darkness than for those under light in the UAE population, but the reverse was true for the seeds in the Egyptian population. The higher salinity tolerance for the A. setifera seeds from the non-saline Egyptian population and the lower salinity tolerance for the seeds from the saline UAE population cannot explain their natural distribution. Further studies about other possible roles, such as levels of different promoting and inhibiting phytohormones, are needed to understand the importance of salinity as an environmentally induced maternal effect.
Author Address [El-Keblawy, Ali] Univ Sharjah, Fac Sci, Dept Appl Biol, Sharjah 27272, U Arab Emirates. [El-Keblawy, Ali] Univ Sharjah, Sharjah Res Acad, Sharjah 27272, U Arab Emirates. [El-Keblawy, Ali] Suez Canal Univ, Fac Educ Al Arish, Dept Biol, Ismailia 41522, Egypt. [Gairola, Sanjay] Sharjah Res Acad, Sharjah Seed Bank, Sharjah 27272, U Arab Emirates. [Gairola, Sanjay] Sharjah Res Acad, Herbarium, Sharjah 27272, U Arab Emirates. [Bhatt, Arvind] Gulf Org Res & Dev, Doha 210162, Qatar. El-Keblawy, A (reprint author), Univ Sharjah, Fac Sci, Dept Appl Biol, Sharjah 27272, U Arab Emirates.; El-Keblawy, A (reprint author), Univ Sharjah, Sharjah Res Acad, Sharjah 27272, U Arab Emirates.; El-Keblawy, A (reprint author), Suez Canal Univ, Fac Educ Al Arish, Dept Biol, Ismailia 41522, Egypt. akeblawy@sharjah.ac.ae
ISSN 1674-6767
ISBN 1674-6767
29-Character Source Abbreviation J. Arid Land
Publication Date Apr
Year Published 2016
Volume 8
Issue 2
Beginning Page 254-263
Digital Object Identifier (DOI) 10.1007/s40333-015-0023-2
Unique Article Identifier WOS:000373138000009
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