重金属对土壤中萝卜种子发芽与根伸长抑制的生态毒性

生态学杂志 ›› 2001, Vol. ›› Issue (3): 4-8.

重金属对土壤中萝卜种子发芽与根伸长抑制的生态毒性

宋玉芳¹, 许华夏¹, 任丽萍¹, 龚平², 周启星¹

1. 中国科学院沈阳应用生态研究所,陆地生态过程开放实验室,沈阳,110016;
2. 加拿大国家研究院生物技术研究所,安大略,奎北克H4P2R2

收稿日期:2000-12-12 修回日期:2001-02-28 出版日期:2001-06-10

Eco-Toxicology of Heavy Metal on the Inhibition of Seed Germination and Root Elongation of Turnip in Soil

Song Yufang¹, Xu Huaxia¹, Ren Liping¹, Gong Ping², Zhou Qixing¹

1. Laboratory of Ecological Processes in Terrestrial Ecosystems, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016;
2. Biotechnology Research Institute,National Research Council of Canada,6100 Royalmount Avenue,Montrea l,Quebec H4P2R2

Received:2000-12-12 Revised:2001-02-28 Online:2001-06-10

摘要/Abstract

关键词: 玉米, 杂交种, 阴湿, 指标

Abstract: The eco toxicity of Cu,Zn,Pb and Cd in the single form on the inhibition of seed germination and root elongation of turnip was tested with four types of soils (red loam soils,meadow brown soils,chestnut soils and dark brown soils),and their combined effect was determined with meadow brown soils.Data showed that with the same content of heavy metals,the root elongation was more strongly inhibited than the seed germination,indicating that root is more sensitive to heavy metals pollution than seed germination.The inhibition rates of heavy metals on the root elongation (IRHMRE)of turnip were significantly negatively related to the contents of organic matter (OR) and Kjedahl nitrogen (KN) in soils.However,there were no significant relationship between IRHMRE and soil pH,and so does the content of T K.A slight antagonism effect in root elongation was produced when Cu,Zn,Pb and Cd were combined in the concentrations.Zn,Pb and Cd resulted in the incentive effect,while Cu gave an inhibition in the single form.Furthermore,additive effect was shown when Cu,Zn,Pb and Cd were combined in the inhibition concentrations(IC>10%)of single form.

Key words: maize, hybrid, shade-humid environment, index.

中图分类号:

X171.5

宋玉芳, 许华夏, 任丽萍, 龚平, 周启星. 重金属对土壤中萝卜种子发芽与根伸长抑制的生态毒性[J]. 生态学杂志, 2001, (3): 4-8.

Song Yufang, Xu Huaxia, Ren Liping, Gong Ping, Zhou Qixing. Eco-Toxicology of Heavy Metal on the Inhibition of Seed Germination and Root Elongation of Turnip in Soil[J]. cje, 2001, (3): 4-8.

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