癌变·畸变·突变 ›› 2016, Vol. 28 ›› Issue (3): 223-226.doi: 10.3969/j.issn.1004-616x.2016.03.013

• 论著 • 上一篇    下一篇

在水培方式下锶对白菜和油菜某些生理指标的影响

李奕奉, 闫冬, 何映雪, 姜晓燕, 丁库克   

  1. 中国疾病预防控制中心辐射防护与核安全医学所, 北京 100088
  • 收稿日期:2015-12-01 修回日期:2016-02-29 出版日期:2016-05-31 发布日期:2016-05-31
  • 通讯作者: 丁库克,E-mail:shouding@ccmu.edu.cn E-mail:shouding@ccmu.edu.cn
  • 作者简介:李奕奉,E-mail:18911281265@163.com。
  • 基金资助:
    科技部国家支撑计划课题(2013BAK03B05);核废物与环境安全国防重点学科实验室西南科技大学开放基金项目(14zxnk03);公共卫生专项(50010215-1301);国家自然科学基金项目(41402211)

Some physiological effects of strontium on hydroponic Chinese cabbage and rape

LI Yifeng, YAN Dong, HE Yingxue, JIANG Xiaoyan, DING Kuke   

  1. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China
  • Received:2015-12-01 Revised:2016-02-29 Online:2016-05-31 Published:2016-05-31

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摘要： 目的:研究锶(Sr2+)对白菜与油菜某些生理指标的影响。方法:配制含有不同浓度Sr2+(0、1、2、3和4 mmol/L)的霍格兰氏营养液培养白菜与油菜幼苗4周后,测定两种蔬菜叶片中丙二醛(MDA)、过氧化氢酶(CAT)、过氧化物酶(POD)、超氧化物歧化酶(T-SOD)活性及叶绿素含量。结果:与对照组相比,随着Sr2+浓度的升高,白菜叶片中MDA含量先升高后降低,当Sr2+浓度为2 mmol/L时达到峰值(P<0.05);油菜叶片中MDA含量各组之间差异无统计学意义(F=2.798,P>0.05);两种蔬菜MDA含量差异无统计学意义(F=0.057,P>0.05)。两种蔬菜叶片中的CAT、POD、T-SOD活性均呈现先降低后升高,且在油菜中,POD和T-SOD活性在Sr2+为1~4 mmol/L时均明显低于对照组,差异均具有统计学意义(P均<0.05)。两种蔬菜在14、21和28 d时,叶片中叶绿素含量与7 d时相比均明显增加,差异均具有统计学意义(P均<0.05)。结论:锶对油菜和白菜的MDA、过氧化物酶系统及叶绿素含量可产生显著影响。

关键词: 锶, 白菜, 油菜, 抗氧化物酶, 叶绿素

Abstract: OBJECTIVE:To study some physiological effects of strontium on Chinese cabbage and rape. METHODS:The Hoagland solutions of different strontium concentrations(0, 1, 2, 3, 4 mmol/L) were used to culture Chinese cabbage and rape. After 4 weeks, leaves were used to analyze chlorophyll content and activities of antioxidant enzymes, including malondialdehyde (MDA), catalase (CAT), peroxidase (POD) and total superoxide dismutase (T-SOD). RESULTS:Compared with controls, the content of MDA in treated Chinese cabbage decreased from the peak of 2 mmol/L of strontium (P<0.05), while there was no significant difference between groups in rape (F=2.798, P>0.05). Also, no significant difference was found between the two vegetables (F=0.057, P<0.05). The activity of CAT, POD and T-SOD decreased first and then increased significantly (P<0.05). Chlorophyll content for the 14 d, 21 d, 28 d increased significantly over that of 7 d (P<0.05). CONCLUSION:Strontium has strong influence on MDA, antioxidant enzyme and chlorlphyll of Chinese cabbage and rape.

Key words: strontium, Chinese cabbage, rape, antioxidant enzyme, chlorophyll

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