押为了明确盐胁迫对小麦幼苗生理生化特性的影响，采用水培方法，以兰黑粒小麦和小偃15小麦为材料，对其在不同浓度的NaCl处理下叶片中超氧化物歧化酶（SOD）活性、过氧化物酶（POD）活性、丙二醛（MDA）含量、相对电导率、脯氨酸含量和可溶性蛋白质含量等生理指标进行测定。结果表明：随着盐浓度的增加，兰黑粒小麦的SOD和POD活性先增后减，而小偃15小麦的SOD和POD活性呈下降趋势；两种小麦的MDA含量、相对电导率和脯氨酸含量均随盐浓度的增加显著增大；可溶性蛋白质在2种小麦的变化趋势不尽一致。2个供试品种均有一定的抗盐能力，兰黑粒小麦抗盐性相对较强。%To study the effects of NaCl stress of wheat on its physiological and biochemical characteristics, Lanhei wheat and Xiaoyan 15 were taken as tested materials. The superoxide dismutase (SOD) activity, peroxidase (POD) activity, MDA content, relative conductivity, the proline content and the soluble protein content were investigated after different treatments. The results showed that under NaCl stress, compared with the each control, the activities of SOD and POD of Lanhei showed the trend of from increasing to decreasing, while the Xiaoyan15 showed the decreased; MDA content, relative conductivity, the proline content increased significantly as the stress decreased; whereas the trend of soluble protein was different between the 2 cultivars. Both of them had resistance to salt, and Lanhei wheat was a relatively higher salt-tolerant wheat.
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