东京野茉莉对重金属胁迫的响应特征研究  

Research of response characteristics of Styrax tonkinensis to heavy metal stress

作　　者：王丽艳[1] 杨桦[1] 周晨 吴巧花 Wang Liyan;Yang Hua;Zhou Chen;Wu Qiaohua(Jiangxi Academy of Forestry·Nanchang Urban Ecosystem National Orientation Observation and Research Station,Nanchang Jiangxi 330013,China)

机构地区：[1]江西省林业科学院·南昌城市生态系统国家定位观测研究站,江西南昌330013

出　　处：《南方林业科学》2021年第5期25-28,共4页South China Forestry Science

基　　金：江西省林科院青年人才培养项目(项目编号:2015520801)。

摘　　要：本文以东京野茉莉幼苗为研究对象,比较了不同浓度铜和镉胁迫下东京野茉莉叶绿素和光合作用的响应特征。结果表明:随着铜、镉处理浓度的升高,叶绿素含量先上升后下降。随着镉浓度的升高,东京野茉莉植株的净光合速率由下降到上升,气孔导度、蒸腾速率、胞间CO_(2)浓度都有所上升,总体来说东京野茉莉在不同浓度镉胁迫下,光合特性受抑制作用规律不明显,铜胁迫对东京野茉莉光合作用具有抑制作用。In this study,chlorophyll and photosynthesis response characteristics of Styrax tonkinensis seedlings were compared under different concentrations of Cu and Cd stress.The results showed that the chlorophyll content first increased and then decreased with the increase of Cu and Cd concentration.With the increase of concentration of Cd,photosynthetic rate of seedings was from down to up,Conductance to H_(2)O,transpiration rate,intercellular CO_(2) concentration increased,S.tonkinensis seedlings in different concentrations under Cd stress,the inhibition of photosynthetic characteristics was not obvious,Cu stress inhibited the photosynthesis of S.tonkinensis seedlings.

关 键 词：重金属 叶绿素 光合作用 胁迫 东京野茉莉 幼苗 

分 类 号：S792.99[农业科学—林木遗传育种] Q945.78[农业科学—林学]