[目的]探讨表油菜素内酯对香石竹切花瓶插期间某些生理指标的影响,为香石竹切花的保鲜提供参考.[方法]用3种浓度(0.05 mg/L、0.10 mg/L和1.00 mg/L)的表油菜素内酯处理香石竹切花,以清水处理为对照,研究表油菜素内酯对香石竹切花的花瓣含水量水分、游离脯氧酸含量、蛋白质含量、还原糖含量、SOD活性和质膜相对透性等生理特性的影响.[结果]表油菜素内酯有效缓解水分对香石竹切花的胁迫,促进切花体内水分平衡的改善和还原糖含量的增加,抑制花瓣溶质外渗和可溶性蛋白含量下降,并且延缓SOD酶活下降从而延缓切花衰老.但农度过高则无保鲜效果.[结论]3种处理中以0.10 mg/L表油菜素内酯的处理对香石竹切花的保鲜处理效果最佳.%[ Objective ] The study aimed to discuss the effect of epibrassinolide on some physiological indexes and provide the reference for fresh-keeping of cut carnation ( Dianthous caryophyllus L. ) flower. [ Method] With clear water as CK ,the cut carnation flowers were treated by different concentration of epibrassinolide (0.05,0. 10, 1.00 mg/L). We study the effect of epibrassinolide treatment on some physiological indexes such as water,contents of reducing sugar, soluble protein and proline, SOD activity and relative membrane permeability. [ Result] The epibrassinolide treatment could relieve the water stress and promote the water balance, improve the content of reducing sugar, inhibit the increased range of relative membrane permeability and the declined soluble protein content and SOD activity during the vase life. But if the concentration is too high, the treatment has little effect. [ Conclusion] Among 3 treatments, 0. 10 mg/L epibrassinolide treatment could get optimum fresh-keeping effect on cut carnation .
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