为了探究单叶蔓荆抵抗海水胁迫的机理,试验以5种海水浓度胁迫和自来水作对照,测定了单叶蔓荆植株的脯氨酸含量、细胞质膜透性、超氧化物岐化酶活性以及叶绿素含量、类胡萝卜素含量的变化。结果表明:随着海水胁迫程度加深,组织中脯氨酸的含量显著增加,1/3海水时含量最高;细胞质膜透性增加明显;超氧化物岐化酶含量先增后减,1/4海水浓度后下降迅速;植株叶片中叶绿素、类胡萝卜素含量降低,1/5海水时急剧下降,以后叶绿素、类胡萝卜素含量下降缓慢。 In order to explore the mechanism of Vitex monodon in resistance to seawater stress, the experiments were conducted with five kinds of seawater concentration stress and tap water as the control, and the content of proline, the permeability of plasma membrane and the activity of superoxide dismutase Chlorophyll content, carotenoid content changes. The results showed that with the deepening of seawater stress, the content of proline in the tissue increased significantly, and the content was the highest in 1/3 seawater; the permeability of the plasma membrane increased significantly; the content of superoxide dismutase increased first and then decreased, The concentrations of chlorophyll and carotenoid decreased rapidly after the seawater concentration. The content of chlorophyll and carotenoid in the leaves of the plants decreased, and the content of chlorophyll and carotenoids decreased sharply after 1/5 seawater.