---

作 者 ：尹博 王秀峰 姜春辉 李晓云 崔秀敏

期 刊 ：植物营养与肥料学报 2012年 18卷 1期 页码：162-168

关键词：番茄；铜胁迫；油菜素内酯；抗氧化酶；矿质元素；

Keywords:tomato, copper stress, EBR, anti-oxidant enzyme, mineral element,

摘 要 ：采用营养液水培的方法，以改良“毛粉802F1” 番茄为材料，研究外源2,4–表油菜素内酯（2,4–EBR，简称EBR）对铜胁迫下番茄抗氧化酶系统及生长发育的影响。结果表明：与铜胁迫处理相比，外源EBR处理能显著激活铜胁迫下抗氧化酶系统［过氧化物酶（POD）、超氧化物岐化酶（SOD）、过氧化氢酶（CAT）、抗坏血酸过氧化物酶（APX）］和根系活力，使丙二醛含量明显降低，叶绿素含量和生物量显著升高；铜胁迫显著提高了番茄铜含量（尤其是根系），而外施EBR能够显著降低铜胁迫下番茄叶片和根系铜的含量，提高带有相同电荷的竞争性离子Fe、Zn、Mn含量，利于养分平衡，维持番茄正常的生长代谢。

Abstract:Through nutrient solution cultivating in greenhouse, the tomato cultivar, Gailiang Maofen 802F1, was selected as the plant material to investigate the effects of 2,4-EBR on anti-oxidizing enzyme system and growth under copper stress. The results show that the exogenous EBR could effectively improve the activities of anti-oxidizing enzyme systems (POD, SOD, CAT, APX) in leaves and root activity under the copper stress, while the MDA content is remarkably reduced. As an effect of a long period, the content of chlorophyll and plant weight are significantly increased. For mineral elements, excessive copper obviously enhances the copper uptake and transplant in tomato plant,

---