当前位置: 首页 > 文章 > 低温胁迫对天女木兰某些生理指标的影响 吉林农业大学学报 2008,30 (6) 41-43+52
Position: Home > Articles > Effect of Low Temperature Stress on Physiological Process of Magnolia sieboldii Journal of Jilin Agricultural University 2008,30 (6) 41-43+52

低温胁迫对天女木兰某些生理指标的影响

作  者:
杨轶囡;林玉梅;任军;薛艳杰
单  位:
吉林省林业科学研究院;吉林农业大学园艺学院;敦化市农业技术推广中心
关键词:
低温胁迫;天女木兰;丙二醛;可溶性糖;过氧化物酶;超氧化物歧化酶
摘  要:
对天女木兰幼苗进行低温胁迫处理,从膜脂过氧化作用、可溶性糖含量与保护酶几个方面探讨了天女木兰的抗寒生理机制。结果表明:在低温胁迫过程中,10℃处理的MDA含量先显著增加,后开始回落,15℃处理的MDA含量变化趋势与10℃处理的大致相同,而对照植株的MDA含量表现出一定的稳定性。可溶性糖的积累随温度的降低而增加,随着胁迫时间的持续,其含量先增加而后有所回落。低温胁迫后,POD活性呈现出降低—升高—降低的变化趋势,10℃低温处理POD活性降低的幅度比15℃处理大。SOD活性表现出先升高而后降低的趋势,10℃低温处理SOD活性升高的幅度大于15℃处理。
译  名:
Effect of Low Temperature Stress on Physiological Process of Magnolia sieboldii
作  者:
YANG Yi-nan1,LIN Yu-mei2,REN Jun2,XUE Yan-jie3 (1.College of Horticulture,Jilin Agricultural University,Changchun 130118,China;2.Jilin Provincial Academy of Forestry Sciences,Changchun 130041,China;3.Agricultural Technology Extension Center of Dunhua City,Dunhua 133700,China)
关键词:
low temperature stress;Magnolia sieboldii;MDA; soluble sugar;POD;SOD
摘  要:
The studies on membrane-lipid peroxidation,soluble sugar content,changes of defensive enzyme activity of Magnolia sieboldii K.Koch were carried out ,and the main purpose was to disclose the physiological acclimation mechanisms.The results were as follows: During low temperature stress,the MDA content of the treatment at 10 ℃ increased first,then fell after a rise,and the MDA content of the treatment at 15 ℃ had similar change trend with that of the treatment at 10 ℃. While the temperature decreased,soluble sugar content increased.During low temperature stress,its content increased first,then fell after a rise.POD activity displayed a change trend of falling-rising-falling,while SOD activity increased first,then fell after a rise.

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