Cr3+,Cr6+及其复合污染对狐尾藻的毒害作用

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Abstract

The paper briefly dealt with the toxic effects of Cr⁶⁺, Cr³⁺ and their combined pollution on the physiology of roots and leaves of high aquatic plant—Myriopllum verticillatum. The results show that Cr³⁺ could stimulate the growth of root when the treated concentration below 1 mg·L^-1, while Cr⁶⁺ and the combination treatment show significant inhibition to the growth of root. The highest concentration of chlorophyll gained when treated with Cr³⁺ at concentration of 1 mg·L^-1. The concentration of chlorophyll decreased as the increase of Cr⁶⁺ concentration. The concentration of soluble protein increased at first and decreased finally as the promotion of concentration of Cr⁶⁺, Cr³⁺ and their combined treatment. The same effects also took place on the activities of SOD, POD and CAT. The peak of concentration of protein occurred at the combination treatment of 1 mg·L^-1. The results suggest Cr⁶⁺ and Cr³⁺ have corroborative pollution effect to the M. verticillatum, and Cr⁶⁺ is more poisonous than the Cr³⁺.

Key words： Heavy metal Myriophyllum verticillatum Cr Toxic effect

Received: 25 August 2003

:	Q949.751.9
	Q945.1
	Q614.33

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	Articles by authors
	HU Ren
	LIN Qiu-qi
	ZHANG Xiao-lan

Cite this article:

HU Ren,LIN Qiu-qi,ZHANG Xiao-lan. Toxic effects of Cr3+, Cr6+ and their combined pollution on Myriophyllum verticillatum[J]. , 2003, 22(4): 327-331.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2003/V22/I4/327

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[1]	. [J]. Ecological Science, 2020, 39(3): 95-.