Zn胁迫下几种蔬菜幼苗的生理生化反应

›› 2011, Vol. 23 ›› Issue (1): 94-96.

Zn胁迫下几种蔬菜幼苗的生理生化反应

陈莉

运城学院生命科学系, 山西运城 044000

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-01-25 发布日期:2011-01-25

Effect of Zn stress on several physiological and biochemical responses of vegetable seedlings

CHEN Li

Department of Life Science, Yuncheng University, Yuncheng 044000, China

Received:1900-01-01 Revised:1900-01-01 Online:2011-01-25 Published:2011-01-25

摘要/Abstract

摘要： 以油菜、生菜、茼蒿3种蔬菜为供试材料,研究不同浓度ZnSO4(0,500,1 000,2 000,4 000 μmol·L-1)对蔬菜幼苗生理活性的影响,初步探讨Zn对蔬菜幼苗的毒害机理。胁迫5 d后取样,测其POD,SOD活性以及 MDA和Vc含量。结果表明：随Zn浓度的升高,油菜幼苗的SOD活性上升,生菜相反,茼蒿先降后升；POD活性均先降后升；MDA含量先升后降再升,且Zn浓度为5 00 μmol·L-1时含量最高；油菜Vc含量一直下降,生菜先升后降,茼蒿先降后升。

关键词: 蔬菜幼苗, Zn, 生理生化

Abstract: Effect of different concentrations of ZnSO4 (0, 500, 1 000, 2 000, 4 000 μmol·L-1)on the physiological characters in three vegetables of rape, lettuce and crown daisy was studied to investigate Zn toxicity mechanism. After 5 days stress, the results showed that SOD activity of rapeseed increased with the increase of Zn concentration, but SOD activity of lettuce decreased and SOD activity of crown daisy firstly decreased and then increased. POD activity of three vegetables firstly decreased and then increased. But the MDA content showed a pattern of “increase-decrease-increase”, and the highest MDA content was observed when Zn concentration was 500 μmol·L-1.Vitamin C content of rape decreased, but vitamin C content of lettuce firstly decreased and then increased and crown daisy showed contrary trend.

Key words: vegetable seedlings, Zn, physiological and biochemical characters

陈莉. Zn胁迫下几种蔬菜幼苗的生理生化反应[J]. , 2011, 23(1): 94-96.

CHEN Li. Effect of Zn stress on several physiological and biochemical responses of vegetable seedlings[J]. , 2011, 23(1): 94-96.

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