XVI International Botanical Congess

The main interset of this work is to find out new approaches to improve salt tolerance in some important crop plants . Salt tolerance varies with plant age, e.g. plants tend to be more sensitive to salinity during the early vegitative stage of growth. On the other hand, the plants increasingly mor tolerant as they mature. salinity affects more plant organs and physiological processes such as: the uptake and the transport of ions, cell permeability, growth metabolic processes and hormonal balance, which are investigated in this work. Trials are successfully conducted to introduce new strains of Rhizobia and Azotobacter which are tolerant to various abiotic stresses.