高温对玉簪品种部分生理指标的影响研究

本研究进行了正常温度和高温条件下，6个不同耐热性玉簪品种的生理生化指标变化趋势研究，结果表明：高温下其电导率和自由水／束缚水比值的上升与其耐热性呈负相关，而脯氨酸含量、抗氧化酶活性、可溶性蛋白含量的变化与其耐热性呈正相关。上述生理指标均可作为玉簪品种耐热性筛选指标，也为其它园林植物的耐热筛选提供理论指导。

Study on Effects of the High Temperature on Cultivars of Hosta

The research on the change trend of the physiological indexes in varieties of hostaes with different heat-resistance under the normal and high temperature condition has indicated the rate of free water and tied water, relative electrolyte leakage increased more evidently under high temperature when they have lower heatresistance, but the content of Proline, soluble proteins and the activities of SOD, POD and CAT increased more evidently under the same higher temperature in the varieties with higher heat-resistance. All of those physiological indexes would be considered as the system of heat-resistance selection for the hosta, and at the same time, as a theory reference for the other ornamental plants.