Saline stress develops specific adaptation strategies in plants to restore ionic and nutritional balance. The aim of this experiment is to find out the mineral balance of okra (Abelmoschus esculentus L.) under salt stress combined with kinetin (Kn) and salicylic acid (SA). Exogenous intake of kinetin and salicylic acid (0.5mM, 0.1 mM respectively) is by spray and plants are irrigated with NaCl at 100 and 200 mM.l-1 with Hoagland solution (1938). After 122 days, a cationic analysis of the leaves and roots is carried out by ICP-A for Na+, K+, Ca2+ and Mg2+. Results indicate that the exogenous application of the growth regulators attenuates the effect of the NaCl stress at 200 mM, by reducing the Na⁺ amount and increasing the one of K⁺ in leaves, while the hormonal combination gave no positive effect under the same NaCl treatment (200 mM).

The aim of this study is to compare the water and photosynthetic characteristics of two xerophilic ecotypes of Atriplex halimus (L.). Seeds collected from two different sites Djelfa and Oran are germinated in controlled greenhouse. After 6 months, the plantlets were treated 21 days with increasing concentrations of abscisic acid (0M, 10-6 M and 10-3 M). The results show that ecotype of Djelfa reduced water loss through transpiration because of high stomatal resistance. Consequently the content of chlorophyll a and b decrease significantly compared to Oran ecotype which show an increase of the osmotic potential and relative water content.Osmotic adjustment to reduce dehydration and maintain a good photosynthesis seems efficient in Oran ecotype.