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Publication Type J
Authors El-Keblawy, A., F. Al-Ansari and N. Al-Shamsi
Title Effects of temperature and light on salinity tolerance during germination in two desert glycophytic grasses, Lasiurus scindicus and Panicum turgidum
Source Grass and Forage Science
Abstract The grasses Lasiurus scindicus and Panicum turgidum are among the most important forage species of the Arabian deserts. Both are 'glycophytic' or salt-intolerant species, where seed germination becomes reduced by salinity effects. Here, we report experimental effects of light/darkness, temperature and NaCl salinity on seed germination and 'recovery' germination in these two species, after seeds had been transferred from saline solution to distilled water. Seeds were germinated in a range of salinities and incubated at a range of temperatures, in both light and darkness. Seeds of P. turgidum germinated significantly more in darkness than in light at temperatures 15-25 degrees C, but the reverse was true at higher temperatures. Seeds of L. scindicus germinated well across a wide range of temperatures and in both light and darkness. In both species, germination decreased with the increase in salt concentration, and in P. turgidum germination was almost completely inhibited at a concentration of 200 mm. In saline solution, germination in darkness was significantly greater than in light at all the temperatures. Seeds of both species 'recovered' their germination capacity after transfer from saline solutions to distilled water. Germination recovery depended on both light and temperature of incubation in both species.
Author Address [El-Keblawy, A.] UAE Univ, Dept Aridland Agr, Fac Food & Agr, Al Ain, U Arab Emirates. [Al-Ansari, F.; Al-Shamsi, N.] UAE Univ, Dept Biol, Fac Sci, Al Ain, U Arab Emirates. [El-Keblawy, A.] Suez Canal Univ, Fac Educ Al Arish, Dept Biol, Ismailia, Egypt. El-Keblawy, A (reprint author), UAE Univ, Dept Aridland Agr, Fac Food & Agr, POB 17555, Al Ain, U Arab Emirates. a.keblawy@uaeu.ac.ae
ISSN 0142-5242
ISBN 0142-5242
Publication Date Jun
Year Published 2011
Volume 66
Issue 2
Beginning Page 173-182
Digital Object Identifier (DOI) 10.1111/j.1365-2494.2010.00773.x
Unique Article Identifier WOS:000290172200002
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