XU Xiao-hui,LIN Hai-fang,ZOU Ke-qin.Effects of Fe2+ on the Growth and Physio-chemical Characters of Spirodela polyrrhiza[J].Northern Horticulture,2012,36(11):15-18.
Fe2+对紫背浮萍生长和生理生化特性的影响
- Title:
- Effects of Fe2+ on the Growth and Physio-chemical Characters of Spirodela polyrrhiza
- 文章编号:
- 1001-0009(2012)11-0015-04
- 分类号:
- Q 945.3；S 181
- 文献标志码:
- A
- 摘要:
- 通过水培试验研究了不同浓度Fe2+处理下对紫背浮萍生长、光合色素含量、Fv/Fm值、过氧化物酶（POD）活性和丙二醛（MDA）含量的影响。结果表明：Fe2+在0.2~10 mg/L浓度范围内，紫萍的生长、Fv/Fm、可溶性蛋白和MDA含量没有受到明显影响，光合色素含量和POD活性有所升高，表现出较强的抗性；Fe2+浓度超过20 mg/L时开始对紫萍构成胁迫，使紫萍的生长抑制，光合色素含量、Fv/Fm、可溶性蛋白含量、POD活性下降，MDA含量升高，产生明显的毒性效应。
- Abstract:
- The effect of Fe2+ on the growth，the content of photosynthetic pigment，Fv/Fm，the activity of peroxide(POD)，the content of MDA of Spirodela polyrrhiza were studied in a solution culture system.The results showed that when the concentration of Fe2+ was from 0.2 mg/L to 10 mg/L，Fe2+ had limited effect on the growth，Fv/Fm，the content of soluble protein and MDA of Spirodela polyrrhiza，but could increase the content of pigment and the activity of peroxide(POD).When the concentration of Fe2+ was more than 20 mg/L，the growth was inhibited，the content of pigment，Fv/Fm，the activity of peroxide(POD) was decreased，and the content of MDA was increased significantly.These showed that the apparent toxic effect of Fe2+
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备注/Memo
第一作者简介：徐晓晖（1973-），男，硕士，讲师，现主要从事生物技术和植物抗逆性等研究工作。
基金项目：浙江省自然科学基金资助项目(Y507691)。
收稿日期：2012-03-16