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American Journal of Plant Physiology
  Year: 2014 | Volume: 9 | Issue: 2 | Page No.: 38-45
DOI: 10.3923/ajpp.2014.38.45
 
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Germination and Seedling Emergence of Primed Okra (Abelmoschus esculentus L.) Seeds under Salt Stress and Low Temperature

Besma Ben Dkhil, Amani Issa and Mounir Denden

Abstract:
This experiment was conducted to evaluate the effects of priming on the germination, emergence and seedling growth of Abelmoschus esculentus (cultivar Marsaouia) under low temperature and salinity conditions. Seeds were primed for 24 h at 20°C in three priming media (KCl 4%, mannitol 0.75M, CaCl2 10 mM) and control (non-primed seeds) and were examined at different salinity levels (0, 40 and 100 mM NaCl). Results indicated that KCl priming increased final germination percentage, radicle length and seedlings dry weight 100%, 40.94 mm and 0.03 g, respectively, as compared with non-primed seeds. Mannitol and CaCl2 have been found to be better treatments for improving final emergence percentage. Overall increased NaCl level, led to the reductions in final germination and emergence percentage but these reductions were higher for non-primed compared to primed seeds. The increase in NaCl concentrations didn’t show any significantly effect on cotyledons fresh weight of primed or non-primed seeds. Besides, our results proved that priming alleviated the adverse effects of salinity for seedlings biomass as compared to non-primed seeds.
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How to cite this article:

Besma Ben Dkhil, Amani Issa and Mounir Denden, 2014. Germination and Seedling Emergence of Primed Okra (Abelmoschus esculentus L.) Seeds under Salt Stress and Low Temperature. American Journal of Plant Physiology, 9: 38-45.

DOI: 10.3923/ajpp.2014.38.45

URL: https://scialert.net/abstract/?doi=ajpp.2014.38.45

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