PHYSIOLOGICAL STUDIES ON THE EFFECT OF KINETIN ON SennaoccidentalisSEEDLING GROWING UNDER SODIUM CHLORIDE.

This work was conducted to study the role of exogenous applied of different levels of kinetin on some chemical constituents of Sennaoccidentalis and attempt to minimize the harmful effects of Nacl salinity stress. The data show that Nacl level at0.001M led to insignificant increase on chemical constituents in Sennaoccidentalis plants. While, the high level of Nacl (0.01M) caused a significant increase. On the other hand, all interactions between Nacl salinity and different levels of kinetin increased metabolic component content. These results indicated that kinetin play an important role to minimize the harmful effects of Nacl salinity stress . The high level of Nacl (0.01M) increased Proline content and RNA as activity in plant. While, plants treated with kinetin decreased its. In addition, the data show that the high level of Nacl at 0.001M caused a significantly decrease of K+, Fe3+,Ca2+ and Mg2+ content .While ,the low level of Nacl at 0.001M had no significantly effect in this concern. On the other hand, Na+ content increased in the plant with increasing Naclconcentration.While, treated plants with kinetin increased all this ions in plants grown under salinity or non salinity stress except Na+content as compared to untreated plants