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Effect of low temperature and low light treatment on the coupling state of cucumber thylakoid membrane
Authors
山仑
沈允钢
程智慧
陈启林
Publication date
1 January 2000
Publisher
Abstract
与低温黑暗处理相比 ,低温弱光处理使黄瓜叶片的放氧活性显著降低 ,2℃黑暗处理 6.5h后黄瓜叶片的放氧活性降低到处理前的 66% ,2℃ 35μmol/(m2· s)处理6.5h后则降低到处理前的 - 50 %。研究结果显示 ,在 5℃低温条件下 1 0 0 μmol/(m2· s)光照使黄瓜发生下列变化 :叶片毫秒延迟发光的慢相强度显著降低 ;从叶片中提取的叶绿体的PS 及 PS +PS 的电子传递速率显著升高 ;加 NH4 Cl和加 ADP+Pi的 Hill反应活性与基础 Hill反应活性相差不大 ;从叶片中提取的叶绿体 9- AA荧光猝灭能力消失。以上结果证明低温下光照处理使黄瓜类囊体膜解耦联
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018