As reviewed by Ashraf and Harris, salt-sensitive species showed an increase in electrolyte leakage in the leaves under saline conditions. Electrolyte leakage is an indicator for the extent of membrane damage under salt stress and was determined in the fully expanded leaves of salt-stressed H.rosa-sinensis. Low values of electrolyte leakage were recorded in the controls (0 mM). The presence of NaCl in the rooting medium induced a significant increase in electrolyte leakage in the leaves (Figure 1) and was greater as exposure time to saline treatment increased, reaching maximum values after 28 days.