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Publication Type J
Authors Hameed, A., M. Z. Ahmed, S. Gulzar, B. Gul, J. Alam, A. K. Hegazy, A. R. A. Alatar and M. A. Khan
Title SEED GERMINATION AND RECOVERY RESPONSES OF SUAEDA HETEROPHYLLA TO ABIOTIC STRESSES
Source Pakistan Journal of Botany
Abstract Seed germination and recovery from salt stress of an annual halophyte Suaeda heterophylla (Kar. & Kir.) Bunge to different iso-osmotic concentrations (0, -0.46, -0.92, -1.38, -1.84, and -2.30 MPa) of NaCl and PEG-6000 at 15/25, 20/30 and 25/35 degrees C in both 12-h temperature and light regimes and in complete darkness were studied. Maximum number of seeds germinated in distilled water and increase in concentrations of both NaCl and PEG-6000 decreased germination at all temperature regimes, light and dark conditions, with higher inhibition in NaCl than PEG-6000. Recovery of germination and viability of seeds were lower in NaCl than PEG-6000 both in the light and dark. Moderate alternate temperatures (20/30 degrees C) and 12-h photoperiod were found to be the optimal for seed germination and recovery. Better seed germination of S. heterophylla when osmotic potential caused both by NaCl and PEG 6000 is lower, temperature regime of 20/30 degrees C and light regime is for 12 h.
Author Address [Hameed, Abdul; Ahmed, Muhammad Zaheer; Gulzar, Salman; Gul, Bilquees; Khan, M. Ajmal] Univ Karachi, Inst Sustainable Halophyte Utilizat, Karachi 75270, Pakistan. [Alam, Jan] Hazara Univ, Dept Bot, Mansehra, Pakistan. [Hegazy, Ahmad K.; Alatar, Abdel Rehman A.; Khan, M. Ajmal] King Saud Univ, Coll Sci, Dept Bot & Microbiol, Riyadh 11451, Saudi Arabia. [Khan, M. Ajmal] Qatar Univ, Coll Arts & Sci, Qatar Shell Professorial Chair Sustainable Dev, Dept Int Affairs, Doha, Qatar. Khan, MA (reprint author), Univ Karachi, Inst Sustainable Halophyte Utilizat, Karachi 75270, Pakistan. ajmal.khan@qu.edu.qa
ISSN 0556-3321
ISBN 0556-3321
29-Character Source Abbreviation Pak. J. Bot.
Publication Date Oct
Year Published 2013
Volume 45
Issue 5
Beginning Page 1649-1656
Unique Article Identifier WOS:000324727500024
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