EFFECT OF SALT STRESS ON THE MINERAL RESPONSE OF Atriplex canescens (PURSH) NUTT

Résumé

Atriplex plants are an important forage reserves and their importance in the rehabilitation of degraded areas and saline soils (agricultural and ecological interest) its resistance to drought, salinity and sunlight [1,2]. In order to explore the mechanism of salinity tolerance of the plant, proposed by this study to identify the behavior of some cations following a salt stress applied during a week with salt combined NaCl + CaCl 2(400 and 600 meq), was studied in seedlings of Atriplex canescens (Pursh) Nutt. The nutritional aspect has been identified as a probable indication of tolerance to salt stress. The obtained results indicate that salinity has caused some changes in concentrations of cations. Na + accumulates more in roots than in leaves and stems with increasing salt concentration treatment. The effect of salt treatment is a very highly significant accumulatio n of sodium in the three organs. The leaves of treated plants are enriched in K + with increasing salt concentration with a very high ly significant accumulation of potassium in the stem and root is not significant compared with controls. Regarding the Ca ++ in the leaves, it increases significantly with increasing concentrationof salt in the salt treatment, at the stem and root, calcium accumulates with low levels, the treatment effect is not significant.