Four common landraces of tomato were investigated for the response in some physiological parameter and variation in gene expression. The results of the present study found that salinity stress is negatively affect germination percentage and ranged from 60% to 80% and the effect of salinity levels was found to be related to the exposure time to salinity treatment and the genotypic of tomato landraces. similar negative effect of salinity was reported the length of radical length. The amount of chlorophyll was highly influenced by salinity and was ranged between about 26 to 40 and was found to be largely dependent on genotypic characteristics of tomato landraces and the time of exposure to salinity. Moreover, it was found that the increase in salinity level significantly impacted the stomatal conductance of varied genotype of tomatos. Additionally, germination rate and germination rate were both affected by salinity with varied degrees. Based on the results (chlorophyll content, stomatal conductance and germination ability) presented in this study it was found that the landrace (111) and landrace (975) were both salt tolerant and the landrace of Quaresma (111) is highly sensitive to salinity.


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