Effect of Hormonal Priming on Mitigating Salt Stress in Tomato Plants
2024
Kouadria, Rabiaa | Soualem, Samira | Souad Ouldkaddour, Asma | Bouzouina, Mohammed
Salinity is one of the major factors affecting crop plants growth and productivity. Hormonal seed priming using salicylic acid (SA) has been shown to improve plant tolerance to salinity. This study aims to definen the effect of 1mM SA addition under different NaCl levels (0, 50, 100, 150 and 200mM) on tomato plants (Solanum lycopersicum L. Mill.). The results of this study revealed that the salicylic acid addition had no significant effect on emergence rate and stems heights of tomato plants stressed to salinity. On the other hand, a positive effect was reported on roots lengths. Indeed, the values recorded in salinity conditions and in the presence of SA were higher than those recorded in its absence (2.83±0.5cm at 50mM). The data from the study of the biochemical aspect seems to indicate a significant effect of salicylic acid on leaves sugar content. A maximum content estimated at 70.822±9.887 mg/g MF was recorded at 150mM. No significant effect was revealed in the presence of SA on proline content. SA can provide sustainable solution in mitigating salt stress in tomato plants.
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