GROWTH REGULATORS AFFECTING THE SALT TOLERANCE IN DATURA PLANTS

Authors:	A. R. E. Awad, A.E.-A. Kamel
Abstract: Datura innoxia were planted in different salinity concentrations (0.0 to 0.4%). These plants were subjected to the combined effect of CCC or ethephon or kinetin, at different concentrations. The main results were: Salinity treatments significantly retarded the vegetative growth. On the other hand, the growth regulators showed the opposite trend, i.e. they could be used to reduce the harmful effect of salinity. Both of salinity and growth regulators treatments increased the total soluble sugars percentage in leaves. Salinity treatments decreased the total alkaloidal content (mg/gm dry weight). The growth regulators seemed to decrease the harmful effect of the saline conditions, leading to more alkaloidal content. The anatomical structure of the roots and leaves were modified to face the undesirable condition of salinity.
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