Page 25 - English isu 43

EFFECT OF SOME AMINO ACIDS ON THE PHYSIOLOGICAL CHARACTERISTICS OF
MAIZE PLANT UNDER SOIL SALT STRESS CONDITIONS IN EGYPT AND TUNISIA

percentages, as a result of treatment T1, were 33.0, 68.0, 130.0,

101.9 and 34.0 % for B, Cu, Fe, Mn and Zn, respectively. with T2
treatment, micro-nutrients percentages were 42.0, 53.0, 105.6, 71.3

and -11.8 % for B, Cu, Fe, Mn and Zn, respectively. In contrast,
T3 has concentrations of 16.0, -72.0, 39.8, 29.9 and -32.0 % for the

same sequence of the above mentioned nutrients.

The positive behavior of proline acid in many physiological

characteristics is attributed to the following :

• It plays an important role in adaptive on the tolerance of plant
cells to salinity and water stresses by increasing the concentra-

tion of cultural osmotic components in order to equalize the
osmotic potential of the cytoplasm.

• It also plays a considerable role in preventing the oxidation of
cells that occur under stress conditions.

This behavior helps more leaf carotenoids and chlorophyll as well

as higher carbohydrate content in the leaves and roots more than con-
trol. Therefore, this research paper recommend the use of proline to

enhance plant growth and production in maize plants grown under sa-
line conditions. (Ashraf and Foolad, 2007; Hossain and Fujita (2010);

El-Sherbeny and Teixeira da Silva 2013; El-Naby et al., 2013).
25