| 自然降温过程中南方红豆杉叶片水分、渗透调节物质的动态变化与低温半致死温度的关系 |
| |
| 引用本文： | 谢吉容,谈锋.自然降温过程中南方红豆杉叶片水分、渗透调节物质的动态变化与低温半致死温度的关系[J].西南民族学院学报(自然科学版),2002,28(1):61-64. |
| |
| 作者姓名： | 谢吉容 谈锋 |
| |
| 作者单位： | [1]重庆师范高等专科学校生物系，重庆永川402168 [2]西南师范大学生命科学学院，重庆北碚400715 |
| |
| 基金项目： | 重庆市科技攻关项目“曼地亚红豆杉的引种繁殖和诱生剂的研制”资助，课题编号2000-6222 |
| |
| 摘 要： | 研究了南方红豆杉叶片低温半致死温度与水分和渗透调节物质随气温下降的变化。结果表明，低温半致死温度降低的同时，叶片饱和含水量、自由水和淀粉含量下降，束缚水、可溶性糖、可溶性蛋白和游离脯氨酸 含量增加。这些物质的适应性变化导致低温半致死温度的下降是抗寒性提高的生理基础。
|
| 关 键 词： | 南方红豆杉 低温半致死温度 渗透调节物质 抗寒适应性 自然降温 水分 叶片 动态变化 |
| 文章编号： | 1003-2843(2002)01-0061-04 |
| 修稿时间： | 2001年11月26 |
The relationship between changes of water content and osmoregulation substances and semilethal low temperature in T. chinensis var. mairei as temperature falls |
| |
| XIE Ji-rong,TAN Feng.The relationship between changes of water content and osmoregulation substances and semilethal low temperature in T. chinensis var. mairei as temperature falls[J].Journal of Southwest Nationalities College(Natural Science Edition),2002,28(1):61-64. |
| |
| Authors: | XIE Ji-rong TAN Feng |
| |
| Abstract: | The semilethal low temperature of T. chinensis var.mairei leaves and the changes of water content and osmoregulation substances have been studied. The results show that relative water content and the content of free water and starch of T. chinensis var.mairei leaves decrease while the content of bund water, soluble suger, soluble protein and proline increase with the falling of the semilethal low temperature. The adaptive changes of these substances leading to the falling of the semilethal low temperature is the physical foundation of improvement of the cold resistance. |
| |
| Keywords: | Taxus chinensis var mairei semilethal temperature osmoregulation substance cold resistance |
| 本文献已被 CNKI 维普 等数据库收录！ |
