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[目的]研究低温胁迫对竹柏生理生化特征的影响。[方法]通过测定竹柏幼苗叶片质膜相对透性、游离脯氨酸含量、可溶性糖含量、丙二醛(MDA)含量和叶绿素含量等生理指标,研究竹柏幼苗在自然条件下和人控低温条件下这些生理指标连续5d的变化规律。[结果]竹柏幼苗叶片可溶性糖含量、游离脯氨酸含量、丙二醛含量和质膜相对透性均较对照有所上升;叶绿素含量随着低温胁迫时间的延长逐渐下降。竹柏幼苗对低温胁迫产生了积极的响应,所受的低温伤害有所降低。[结论]该研究为竹柏在汉江平原地区种植的冬季管理提供理论依据。
[Objective] The research aimed to study the effects of chilling stress on physiological and biochemical characteristics of bamboo. [Method] The physiological and biochemical indexes such as relative plasma membrane permeability, free proline content, soluble sugar content, malondialdehyde (MDA) content and chlorophyll content of Crab Boai seedlings were studied. Under these physiological indicators of continuous changes in 5d. [Result] The contents of soluble sugar, free proline, malondialdehyde and relative permeability of plasma membrane of bamboo and cypress seedlings were all higher than those of the control. The content of chlorophyll decreased gradually with the prolongation of low temperature stress. Bamboo and cypress seedlings have a positive response to low temperature stress, suffered cold damage decreased. [Conclusion] This study provided the theoretical basis for the winter management of bamboo and cypress planted in the Hanjiang Plain.