两种鸢尾属植物在铝胁迫下的生理反应

采用水培方法,在AlCl_3·6H_2O质量浓度为0(对照)、5、10、15、20、25 mg/L条件下分别培养鸢尾和黄花鸢尾,研究两种鸢尾在铝胁迫下的生理反应.结果表明,AlCl_3·6H_2O质量浓度为10 mg/L时,两种鸢尾的叶绿素含量、类胡萝卜素含量和根系活力均较对照极显著升高;AlCl_3·6H_2O质量浓度高于10 mg/L时,两种鸢尾的叶绿素含量、类胡萝卜素含量和根系活力均随Al~(3+)浓度的增大而下降;AlCl_3·6H_2O质量浓度为5 mg/L时,两种鸢尾叶片内可溶性糖含量显著低于对照,随着AlCl_3·6H_2O质量浓度的增大,可溶性糖含量逐渐上升;AlCl_3·6H_2O质量浓度为0～25 mg/L时,两种鸢尾叶片内丙二醛和游离脯氨酸含量均随Al~(3+)浓度的增大而持续上升.

Physiological reaction of two kinds of Iris under aluminium stress

By cultivating the Iris tectorum Maxim and Iris pseudacorus L. under the different contents of AlCl_3·6H_2O (0, 5, 10, 15, 20, 25 mg/L). A hydroponic cultivation was used to study the physiological reaction of two kinds of Iris under Al~(3+) stress. The result showed that when processed with 10 mg/L AlCl_3·6H_2O, contents of chlorophyll and carotenoid and root activity of two kinds of Iris were increased extremely obviously. While with the concentration of AlCl_3·6H_2O being above 10 mg/L, contents of the chlorophyll and carotenoid and root activity of two kinds of Iris were gradually reduced; under stress of 5 mg/L AlCl_3·6H_2O, contents of soluble sugar in leaves of two kinds of Iris reduced obviously. With the continuation of AlCl_3·6H_2O concentrations increasing, contents of soluble sugar increased significantly. Handling with 0~25 mg/L AlCl_3·6H_2O, contents of MDA and free proline in leaves were gradually rising by adding up AlCl_3·6H_2O concentration.