唐山地区引种宿根花卉的抗寒性研究

［目的］了解唐山地区引种的7种宿根花卉的抗寒能力。［方法］以唐山地区引种的7种宿根花卉为材料，研究不同低温胁迫条件下叶片形态及SOD活性、可溶性蛋白质含量、细胞膜透性的变化。［结果］7种（品种）宿根花卉的电解质透出率在低温胁迫下与对照相比均有明显的变化。并随胁迫程度的加深和胁迫时间的持续延长，膜透性逐渐升高，但增高的幅度各种（品种）均有所差异。以SOD的变化、可溶性蛋白质含量的变化为依据，从抗寒的生理生化机理上解释植物抗寒性的不同，结果得出SOD酶活性的变化、可溶性蛋白质含量的变化与生长恢复观测所得结果相一致。［结论］综合形态和生理生化测定结果判定,7种宿根花卉抗寒性从高到低依次为： 常夏石竹、费菜、‘罗米莱紫’穗花婆婆纳、‘红花’景天、‘柯罗粉’美国薄荷、‘革质’亮金光菊、‘金娃娃’萱草。

Study on Cold Resistance of Introduced Ratoon Flowers in Tangshan Area

Objective]The study was aimed to understand the cold resistance of 7 perennial ratoon flower plants.Method]7 perennial root flower plants in Tangshan were chose as material,the paper researched the changes of leaf morphology at different low temperature stresses,SOD activity,soluble protein content,cell membrane permeability.Result] Percentage of electrolyte leakage of 7 kinds of ratoon flower had been changed sharply in low temperature stress and control group.Membrane permeability increased gradually w...