Abstract

Effect of the combined the phytohormones-salinity (ABA, salicylic acid and GA3) on the total soluble protein and soluble sugars content contained in germinated seeds of two tomato varieties (Lycopersicon esculentum Mill.) is realized to characterize the soluble metabolite involvement in the processes of adaptation to salinity. The research of plant species tolerant to salinity requires an analysis of the behavior of the plant during its cycle especially during the phase of seed germination. At this stage of the seed, salinity is not the only constraining factor, the hormonal action is to be included. Thus, we propose an analysis of the seeds of two varieties of Rio Grande and Imperial tomatoes during their germination under salt stress at 100 mM NaCl.l-1 of distilled water, with or without added ABA at 0.005 mM, GA3 0.005 mM and SA at 0.5 mM. The observations are carried out in two stages at 48 and 96 hours of sowing show that the total soluble protein content and the soluble sugars are influenced by the different treatments; on the other hand, salicylic acid such as GA3 improves protein contents, salt stress and SA increase the soluble sugar content in germinated seeds. In contrast, the proteins decrease in seaweed associated with the ABA’s seeds of two varieties of processing tomato. On the other hand, a variability of the two quantified parameters of the germinated seed is expressed according to the treatment and between the two stages of germination.

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