Abstract
Summary Salinity effects on germination, ion allocation and cell activity in Lycopersicon esculentum were studied. NaCl concentrations up to 100 mM affected the speed but not the percentage of germination. Concentrations higher than 137 mM altered both parameters. Na + and Cl - contents in roots, hypocotyls and cotyledons progressively increased with NaCl concentration, whereas K+ content decreased. Ca ++ content decreased in hypocotyls and roots. Mg ++ concentration did not vary significantly with the different treatments. Transcriptional and translational activities were modified even with the minimal concentrations assayed.
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