铜胁迫对烟草幼苗生长和生理特征的影响  

Effects of Cu Stress on Growth and Physiological Characteristics of Tobacco Seedlings

作　　者：张艳英[1] 刘鹏[1] 徐根娣[1] 周楠[1] 

机构地区：[1]浙江师范大学植物学实验室,浙江金华321004

出　　处：《贵州农业科学》2009年第3期32-35,共4页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目(30540056);浙江省自然科学基金项目(304186;303461)

摘　　要：以2个烟草品种(89112和双-70)为试验材料,设置0、0.5、1、5、10 mg/L 5个铜浓度,通过水培试验,研究铜胁迫下烟草体内丙二醛(MDA)、叶绿素的含量,SOD、POD的活性,生物量的变化。结果表明,MDA的含量随着铜处理浓度的增加,先增加后降低;低浓度的Cu处理下SOD和POD的活性增加,高浓度的铜处理则抑制其活性;在铜处理浓度低于1 mg/L时,叶绿素含量增加,生物量的积累也有所增加,但是当浓度高于1 mg/L时,叶绿素含量降低,植物的光合作用减弱,从而降低了生物量的积累。The seedlings of two tobacco varieties （89112 and shuang-70） were cultured under different Cu concentration （ 0, 0.5, 1, 5 and 10 mg/L） to investigate the effects on the content of MDA and chlorophyll, activity of SOD and POD, and biomass. The results showed that the MDA content first raised and then decreased with increase of Cu concentration, the activity of SOD and POD was increased under the low Cu concentration and inhibited under the high Cu concentration, the chlorophyll content and biomass increased when Cu concentration was below lmg/L and decreased when Cu concentration was above 1 mg/L.

关 键 词：铜胁迫 烟草 幼苗生长 生理特征 

分 类 号：S572[农业科学—烟草工业]