| 低温胁迫对竹柏生理生化特征的影响 |
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| 引用本文： | 周存宇,杨朝东,占磊.低温胁迫对竹柏生理生化特征的影响[J].安徽农业科学,2011,39(27):16666-16667,16670. |
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| 作者姓名： | 周存宇 杨朝东 占磊 |
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| 作者单位： | 长江大学园艺园林学院,湖北荆州,434025 |
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| 基金项目： | 长江大学博士启动基金(801190010105) |
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| 摘 要： | 目的]对引种的竹柏幼苗进行冬季低温胁迫研究。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（18～25℃）的和人控低温（5～6℃）条件下这些生理指标连续5 d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。结论]竹柏幼苗对低温胁迫产生了积极的响应,受低温伤害有所降低。
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| 关 键 词： | 竹柏 低温胁迫 生理指标 |
Effects of Cold Stress on Physiological and Biochemical Characteristics of Podocarpus nagi |
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| ZHOU Cun-yu et al.Effects of Cold Stress on Physiological and Biochemical Characteristics of Podocarpus nagi[J].Journal of Anhui Agricultural Sciences,2011,39(27):16666-16667,16670. |
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| Authors: | ZHOU Cun-yu |
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| Institution: | ZHOU Cun-yu et al(College of Gardening and Horticulture,Yangtze University,Jingzhou,Hubei 434025) |
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| Abstract: | Objective]The research aimed to study the introduction of Podocarpus nagi at cold stress.Method]By measuring plasma membrane permeability,the content of free proline,soluble sugar content,malondialdehyde(MDA) and chlorophyll,researched the Podocarpus nagi seedlings under normal temperature conditions(18-25 ℃) and low temperature(5-6 ℃).Result]The plasma membrane permeability,the content of free proline,soluble sugar and MDA in the leaves of Podocarpus nagi seedling increased after low temparature treatment for 5 days,compared with control;the content of chlorophyll in the leaves of Podocarpus nagi seedlings under cold stress decreased,compared with control.Conclusion] Podocarpus nagi seedlings showed positive response to cold stress and increased their cold tolerance. |
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| Keywords: | Podocarpus nagi Cold stress Physiological index |
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