Influence of NaCl Salinity on Growth and Physiology of Cucumber Microshoots Grown on Rooting Medium

Sa’eed Abu-Romman, Mohammad Suwwan

الملخص


Growth and physiological responses of cucumber microshoots were studied under the influence of sodium chloride salt stress. Microshoots were grown on Murashige and Skoog (MS) rooting media containing 1.0 mg.l-1 IAA. Salinity was induced by incorporating different concentrations [0.0, 25, 50, 75, and 100 mM] of sodium chloride (NaCl) to the rooting medium. Vegetative and root growth of microshoots was negatively affected by salinity. NaCl-induced salinity reduced (more negative) leaf cell sap osmotic potential. Total protein content declined significantly with increasing the concentration of NaCl, while more proline accumulated. Sodium and Cl contents were increased by salinity,  while the uptake of K, Ca and P were significantly reduced.

الكلمات المفتاحية


Cucumber, Microshoots, Rooting, Proline, Salinity

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