THE INFLUENCE OF THE HERBICIDE PARAQUAT GRAMAXON ON GROWTH AND METABOLIC-ACTIVITY OF 3 CHLOROPHYTES

被引：19

作者：

IBRAHIM, EA

机构：

[1] Laboratory of Aquatic Plants, National Institute of Oceanography and Fisheries, Cairo, El-Zamalek Fish Garden

来源：

WATER AIR AND SOIL POLLUTION | 1990年 / 51卷 / 1-2期

关键词：

D O I：

10.1007/BF00211506

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The acute toxicity of commercial herbicide, Paraquat was determined by 96-hr static bioassay on the freshwater chlorophytes Scenedesmus dimorphus (Trup.) Kuetz., Scenedesmus quadricauda (Trup.) de Brebisson and Ankistrodesmus falcatus (Cord) Ralfs. The 96-hr EC50 values of Paraquat for reducing growth and metabolic products of the three algae were determined. The number of days required for cell division increased with increasing Paraquat concentration. The three algae and their test parameters respond differently to Paraquat. Scenedesmus dimorphus was the most susceptible alga and the chlorophyll a was the most sensitive response parameter. On the other hand, the dry weight of the test algae was the most resistant parameter. It was observed that Paraquat has inhibitory effect on the primary producers. © 1990 Kluwer Academic Publishers.

引用

页码：89 / 93

页数：5

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