Soil salinity substantially decreases the productivity in rice (Oryza sativa L.). To elucidate the adaptive responses of salt acclimation, physiological parameters of two rice varieties were evaluated under control and salt stress conditions after acclimation. The results indicated that 50 mM NaCl salinity stress reduced the shoot dry weight in both varieties. However, Vandaran seedlings acclimated with 10 mM NaCl maintained shoot dry weight under 50 mM NaCl salinity stress, whereas acclimation treatment did not enhance the shoot dry weight in Deejiaohualuo. In addition, acclimated Vandaran seedlings maintained better physiological status as determined by enhanced water conservation, improved membrane stability, improved K⁺ accumulation, lower Na⁺ concentration, and lower Na⁺/K⁺, Na⁺/Ca²⁺, Na⁺/Mg²⁺ ratios in the leaf tissues compared to non-acclimated seedlings. However, acclimation did not enhance the above-mentioned physiological traits in Deejiaohualuo. Our results suggest that Vandaran possesses better salt acclimation ability as compared to Deejiaohualuo. The present study suggests that the salt acclimation ability of rice relies on the interaction between varieties and their response to acclimation treatment. Na⁺ exclusion from the shoot may be a key regulation mechanism involved in the salt acclimation process. The acclimation variety would be a better genetic resource to grow in a changing saline environment.

土壤盐分显着降低了水稻 ( Oryza sativa L.)的生产力。为了阐明盐驯化的适应性反应，在驯化后的对照和盐胁迫条件下评估了两个水稻品种的生理参数。结果表明，50 mM NaCl 盐度胁迫降低了两个品种的地上部干重。然而，在 50 mM NaCl 盐度胁迫下，用 10 mM NaCl 驯化的 Vandaran 幼苗保持了地上部干重，而驯化处理并没有提高德焦华洛的地上部干重。此外，驯化后的 Vandaran 幼苗保持了更好的生理状态，这是通过加强保水、改善膜稳定性、改善 K ⁺积累、降低 Na ^{+ 来确定的。}与未驯化的幼苗相比，叶组织中的Na ⁺ /K ⁺、Na ⁺ /Ca ²⁺、Na ⁺ /Mg ²⁺比率较低。然而，驯化并没有增强德娇花落的上述生理特征。我们的结果表明，与 Deejiaohualu 相比，Vandaran 具有更好的盐适应能力。目前的研究表明，水稻的盐驯化能力取决于品种之间的相互作用及其对驯化处理的反应。钠⁺从芽中排除可能是盐驯化过程中涉及的关键调节机制。驯化品种将是在不断变化的盐碱环境中生长的更好的遗传资源。