油菜对过量Mn、Zn的吸收和生理响应

生态学杂志

油菜对过量Mn、Zn的吸收和生理响应

王莹¹,陈为峰^1**,胡林林²,李敏²,孙彬¹,刘宝贤^1

(¹山东农业大学资源与环境学院，山东泰安 271018； ²中国环境科学研究院，北京 100012)

出版日期:2013-12-10 发布日期:2013-12-10

Absorption and physiological responses of rape to excess Mn and Zn.

WANG Ying¹, CHEN Wei-feng^1**, HU Lin-lin², LI Min², SUN Bin¹, LIU Bao-Xian^1

(¹College of Resource and Environment, Shandong Agricultural University, Taian 271018, Shandong, China; ²Chinese Research Academy of Environmental Sciences, Beijing 100012, China)

Online:2013-12-10 Published:2013-12-10

摘要/Abstract

摘要： 通过发芽和盆栽试验，研究了不同浓度Mn (0～1500 mg·kg^-1) 和Zn (0～1000 mg·kg^-1) 污染对油菜发芽、生长、品质的影响以及油菜对这些元素的吸收效应。结果表明：低浓度Mn、Zn处理油菜的发芽势和发芽率未受到显著影响，油菜植株内叶绿素含量、Vc含量以及油菜植株净光合速率略有升高；高浓度Mn、Zn胁迫(Mn>100 mg·kg^-1、Zn>50 mg·kg^-1)抑制了油菜的发芽、生长，降低了油菜植株内Vc的含量；油菜发芽对这两种元素的敏感程度表现为Mn>Zn；油菜植株内Mn、Zn的残留量分别与土壤中Mn、Zn含量呈极显著正相关，Mn>200 mg·kg^-1、Zn>25 mg·kg^-1时油菜中Mn、Zn残留量已超过安全限值。

Abstract: A germination test and a pot experiment were conducted to study the effects of different concentrations Mn (0-1500 mg·kg^-1) and Zn (0-1000 mg·kg^-1) on the seed germination and the plant growth and quality as well as the absorption of these two elements by rape plant. Low concentrations Mn and Zn had little effects on the germination rate and germination potential, but slightly increased the plant chlorophyll and Vc contents and photosynthetic rate. High concentrations Mn (>100 mg·kg^-1) and Zn (>50 mg·kg^-1) stress inhibited the seed germination and the plant growth, and decreased the plant Vc content. The sensitivity of seed germination to Mn was higher than that to Zn. There existed significant positive correlations between the plant and soil Mn and Zn contents. When the soil Mn and Zn contents were >200 mg·kg^-1 and >25 mg·kg^-1, respectively, the Mn and Zn residues in plant exceeded the safety limit, being not suitable for eating.

王莹1,陈为峰1**,胡林林2,李敏2,孙彬1,刘宝贤1. 油菜对过量Mn、Zn的吸收和生理响应[J]. 生态学杂志.

WANG Ying1, CHEN Wei-feng1**, HU Lin-lin2, LI Min2, SUN Bin1, LIU Bao-Xian1. Absorption and physiological responses of rape to excess Mn and Zn.[J]. cje.