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当前位置: 首页 > 文章 > 黑暗和光照条件下低温胁迫对红花玉兰幼苗生理特性的影响 福建林业科技 2009,36 (2) 242-245
Position: Home > Articles > The Effect of Low Temperature Stress on Physiological Characteristics of Magnolia wufengensis Seedlings under the Dark and Light Conditions Journal of Fujian Forestry Science and Technology 2009,36 (2) 242-245

黑暗和光照条件下低温胁迫对红花玉兰幼苗生理特性的影响

作  者：
李招弟;马履一;陈发菊
单  位：
北京林业大学省部共建森林培育与保护教育部重点实验室
关键词：
红花玉兰;低温光照;低温黑暗;生理特性
摘  要：
以25℃正常生长的苗木为对照,研究了在黑暗和光照条件下低温(5℃)胁迫对红花玉兰幼苗生理特性的影响,结果表明:低温胁迫下,质膜相对透性升高,可溶性糖及脯氨酸含量增加,且光照处理高于黑暗处理;可溶性蛋白含量下降,且光照处理的含量小于黑暗处理;SOD活性升高,且光照处理高于黑暗处理;光照处理POD活性升高较小,黑暗处理POD活性低于对照。可溶性糖含量、脯氨酸含量、SOD活性的提高可能是植株抗寒性机制的重要因子。
译  名：
The Effect of Low Temperature Stress on Physiological Characteristics of Magnolia wufengensis Seedlings under the Dark and Light Conditions
作  者：
LI Zhao-di,MA Lü-yi,CHEN Fa-jü(Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing 100083,China)
关键词：
Magnolia wufengensis;low-temperature illumination;low-temperature dark;physiological characteristic
摘  要：
The effect of low temperature stress on physiological characteristics of Magnolia wufengensis seedlings under the dark and light conditions was studied by taking the normal seedling grew at 25℃ as the control.The results showed:the plasma membrane relative permeability increased,the contents of soluble sugar and proline increased,and those with illumination treatment were higher than those with the dark treatment.Nevertheless the content of soluble protein decreased,those with illumination treatment were lower than those with the dark treatment;the activity of SOD increased,and those with illumination treatment were higher than those with the dark treatment;The activity of POD increased by a small amount with illumination treatment,the activity of POD was lower than that of the control with dark treatment.The increases of the contents of soluble sugar,proline and the activity of SOD might play an important role in chilling resistance system of the plant.

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