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Publication Type J
Authors Gul, B. and M. A. Khan
Title EFFECT OF COMPATIBLE OSMOTICA AND PLANT GROWTH REGULATORS IN ALLEVIATING SALINITY STRESS ON THE SEED GERMINATION OF ALLENROLFEA OCCIDENTALIS
Source Pakistan Journal of Botany
Author Keywords PROLINE ACCUMULATION NACL STRESS GLYCINEBETAINE TEMPERATURE DORMANCY
Abstract Allenrolfea occidentalis, a perennial halophytic shrub in the family Chenopodiaceae is widely distributed in the inland salt marshes and salt playas of western United States. Experiments were conducted to determine the influence of compatible osmotica (betaine and proline) and growth regulators (gibberellic acid and kinetin) in alleviating salinity stress on the seed germination of A. occidentalis. Seed germination decreased with an increase in salinity stress and no seed germinated at 800 mM NaCl. Compatible osmotica and growth regulators were able to counteract the inhibitory effect of salinity. Betaine (0.1 and 1.0 mM) and proline (0.1 and 1.0 mM) completely alleviated the salinity-enforced dormancy at all treatments. Gibberellic acid (0.3 and 3.0 mM) and kinetin (0.05 and 0.5 mM) significantly (p < 0.0001) improved the seed germination inhibited by NaCl but the gibberellic acid alleviated more than kinetin. At higher salinity, 800 mM NaCl low concentration of kinetin (0.05 mM) and gibberellic acid (0.3 mM) were more effective.
Author Address [Gul, Bilquees] Brigham Young Univ, Dept Bot & Range Sci, Provo, UT 84602 USA. [Gul, Bilquees] Univ Karachi, Dept Bot, Karachi 75270, Pakistan. [Khan, M. Ajmal] Univ Karachi, Inst Sustainable Halophyte Utilizat, Karachi 75270, Pakistan. Gul, B, Brigham Young Univ, Dept Bot & Range Sci, Provo, UT 84602 USA.
ISSN 0556-3321
ISBN 0556-3321
29-Character Source Abbreviation Pak. J. Bot.
Publication Date Oct
Year Published 2008
Volume 40
Issue 5
Beginning Page 1957-1964
Unique Article Identifier ISI:000260806400015
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