【摘要】 研究了石蒜科植物叶片中与抗寒有关的束缚水与自由水的比值、可溶性糖含量、可溶性蛋白含量以及过氧化物酶(POD)等生理指标在自然温度降低条件下的变化。结果表明,随着自然温度的降低,石蒜(Lycoris radiata Traub.)、葱兰(Zephyranthes candida Herb.)、晚香玉(Polianthes tuberosa L.)和蜘蛛兰(Hymenocallis littoralis Salisb.)的束缚水与自由水比值、可溶性糖和可溶性蛋白质含量逐渐提高;在温度降低的过程中,除了蜘蛛兰的POD活性降低外,石蒜、葱兰和晚香玉的POD活性都有不同程度的增加。综合比较表明,石蒜和葱兰较晚香玉和蜘蛛兰有较强的抗寒性。更多还原

【Abstract】 The physiological indexes related to cold resistance of the four amaryllidaceae plants were studied.The results were as following: The ratio of bound water and free water,the soluble sugar and the soluble protein contents of Lycoris radiata?Zephyranthes candida?Polianthes tuberosa and Hymenocallis littoralis were all increased with the temperature decreasing.The POD activity of Lycoris radiata?Zephyranthes candida and Polianthes tuberosa presented increasing tendency,but the POD activity of Hymenocallis littoralis presented decreasing tendency as the temperature decreasing.According to the above results,it could be concluded that Lycoris radiata and Zephyranthes candida had higher cold-resistance than others.更多还原