Abstract

Khelifa, S., M

In order to evaluate the degree of adaptation of urban Citrus aurantium L. trees to osmotic stress and to explore the effect of seed’s origin on stress tolerance/adaptation, catalase activity levels were measured. Before carrying out the analysis, seedlings issued from high and low plant mother’s vitality were grown on NaCl stressed media during 2 months. Catalase activities revealed different levels according to cities, plant mother vitality and salt dose. It increased in stressed medium for the same seedlings origin. Thus, tissues superoxide dismutase (SOD) activity