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生态学杂志 ›› 2010, Vol. 29 ›› Issue (10): 2077-2080.

• 研究简报 • 上一篇    下一篇

镉胁迫对金银花叶片含水量及微量元素吸收积累的影响

刘周莉,陈 玮**,何兴元   

  1. 中国科学院沈阳应用生态研究所,沈阳 110016
  • 出版日期:2010-10-08 发布日期:2010-10-08

Effects of cadmium stress on Lonicera japonica leaf water content and plant microelement uptake.

LIU Zhou-li, CHEN Wei, HE Xing-yuan   

  1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Online:2010-10-08 Published:2010-10-08

摘要: 采用土培试验方法,研究了不同浓度镉(Cd)胁迫下金银花的叶片含水量和体内微量元素含量的变化。结果表明:随着Cd处理浓度的增加,叶片含水量呈先上升后下降的变化趋势。在100和200 mg·kg-1Cd处理下,叶片含水量分别为70.4%和65.3%,与对照相比虽有所降低,但并未表现出显著差异。从整体上看,Cd胁迫促进了根中Fe含量增加,而Mn、Cu和Zn含量均有所下降;与对照相比,叶中Cu含量降低,Fe、Mn和Zn含量均在低浓度Cd处理下增加,随着Cd处理浓度的增加而降低。

关键词: 土壤有机质, 模型, 比较

Abstract: Taking Lonicera japonica as test object, a soil culture experiment was conducted to study its leaf water content and plant microelement uptake under the stress of different concentration cadmium (Cd). With the increasing Cd concentration in soil, the leaf water content decreased after an initial increase. Under the stress of 100 and 200 mg Cd·kg-1, the leaf water content was 70.4% and 65.3%, respectively, and had no significant difference from the control. Cd stress promoted the Fe uptake by roots, but decreased the Mn, Cu, and Zn uptake. Compared with the control, Cd stress decreased the leaf Cu content. The leaf Fe, Mn, and Zn contents increased under low concentration Cd stress, but decreased with increasing Cd concentration.

Key words: Soil organic matter, Models, Comparison