地锦属植物抗寒性生理指标变化分析

Changing Regularity Analysis of Cold-resistant Physiology Targets about Parthenocissus Plants

通过对五叶与三叶地锦人工低温梯度冷冻处理取样、自然露地越冬和春秋冻融季节取样处理,分别测定实验材料抗寒理化指标的变化规律,研究其抗寒机制与抗寒能力。通过Excel做图处理和SAS数据软件显著性分析,结果表明,可溶性糖与蛋白质含量与电导率的数值随温度的降低呈单峰曲线变化,数据量值差异显著或极显著,在冬季和人工最低温时均达到最高值,POD在秋季和春季保持较高的酶活性,尤其在春季酶活性最高;春季的冻融交替对实验材料的伤害强于秋季;五叶地锦的半致死温度为-26.89℃,三叶地锦的半致死温度为-24.07℃,五叶地锦的抗寒能力、露地越冬能力强于三叶地锦;实验材料在哈尔滨市寒冷的环境中具有一定的越冬能力;实验材料露地越冬后的生长表现与实验结论相一致。

By taking samples to dispose artificial low-temperature gradient freeze, crossing winter naturally without protecting, freeze and melt season in spring and autumn, testing the physiology targets changing regularity of materials＇ cold-resistant, researching the cold-resistant mechanism and ability. Significance analysises through Excel and SAS data software indicate that soluble carbohydrate and protein content and conductivity rate are unimodal curvilinear motion with the reducing of temperature, reach supreme value in winter and the artificial most low temperature; POD keeps higher enzyme activity in autumn and spring,especially the enzyme activity is the highest in spring;the injury of unimodal curve to materials in spring is stronger than autumn; Parthenocissus quinquefolia＇ s semilethal temperature is - 26.89℃, Parthenocissus tricuspidata＇ s semilethal temperature is -24.07℃, Ability of the cold-resistant and crossing winter without protecting of Parthenocissus quinquefolia is stronger than Parthenocissus tricuspidata; Experiment materials have certain ability of surviving the winter among Harbin＇ s cold environment; The growth behaves after the experiment material survives the winter revealing conforms with the experiment conclusion.