高温胁迫对菊花叶片部分生理参数的影响  

Effect of high temperature stress on physiological parameters of chrysanthemum

作　　者：刘易超[1] 杨际双[2] 肖建忠[1] 李红晓[2] 

机构地区：[1]河北农业大学园林与旅游学院,河北保定071001 [2]河北农业大学园艺学院,河北保定071001

出　　处：《河北农业大学学报》2011年第6期46-49,共4页Journal of Hebei Agricultural University

基　　金：河北农业大学非生命学科与新兴学科科研发展基金(2007-2009);河北农业大学留学回国人员科研启动基金(2004-897);教育部留学回国人员科研启动基金(2006-1018)

摘　　要：以菊花(Chrysanthemum morifolium)‘神马’扦插苗为材料,测定其高温胁迫(25～50℃)下叶片生理指标的变化。结果表明:随温度升高,叶片膜透性、脯氨酸含量和丙二醛(MDA)含量先增加后降低再急剧增加,可溶性蛋白含量和SOD活性的变化趋势则截然相反,而POD活性的变化不大。由此可见,在升温初期菊花可以通过自身调节减小高温胁迫对其造成的伤害,但随着胁迫温度不断升高,这种能力逐渐减小。To study the heat tolerance of chrysanthemum（Chrysanthemum morifolium）,the physiological parameters of the leaves of chrysanthemum ＇Jinba＇ under high temperature stress（25 ℃ to 50 ℃） were measured.The results showed that the relative conductivity,the contents of proline and MDA of leaf increased with increasing temperature,then decreased,and finaly increased significantly again.Conversely,soluble protein level and superoxide dismutase（SOD） activity showed opposite pattern.However,the change of peroxidase（POD） activity was not obvious.These resultes indicated chrysanthemum could reduce the injury caused by heat stress though self-regulation in the early heating.However,such ability gradually decreased with the increasing temperature.

关 键 词：菊花 高温胁迫 生理参数 膜透性 

分 类 号：S682.1[农业科学—观赏园艺]