4种中原牡丹在哈尔滨地区的抗寒性研究

通过低温胁迫处理哈尔滨地区的中原牡丹品种‘豆绿’、‘洛阳红’、‘首案红’和‘姚黄’,分别测定4个品种根、枝的相对电导率、丙二醛、可溶性糖和可溶性蛋白含量,得出生理指标的动态变化规律,并观察了根部解剖结构。结果表明:低温胁迫下,‘豆绿’抗寒性最强,‘洛阳红’抗寒性最弱。相对电导率、丙二醛、可溶性糖和可溶性蛋白含量四者显著相关。根部解剖结构自外而内由表皮、皮层和中柱三部分组成。根部组织切片显示出深度休眠期与生长期相比,韧皮部中淀粉粒增加较多,与植物抗寒有一定关系。该研究可为中原牡丹在寒地的推广和应用提供重要理论依据。

Cold Resistance of 4 types of Central Plains Tree Peony Cultivars in Harbin Area

Through cold stress treatment on the following varities: 'Doulv','Luoyang Hong','Shouan Hong' and 'Yaohuang' which belong to central plains tree peony cultivars,the relative conductivity,malonaldehyde,soluble sugar and soluble protein of their roots and branches were measured,finally the dynamic change law of physiological index were obtained,and the anatomical structure of roots was observed.The results are as follows: 'Doulv' performs the strongest cold resistance,and 'Luoyang Hong' shows the weakest.The ...