Effects of 2,4-D, glyphosate and paraquat on growth, photosynthesis and chlorophyll–a synthesis of Scenedesmus quadricauda Berb 614

• Published in: Chemosphere (Oxford) Vol. 41; no. 1; pp. 177 - 182
• Main Author: Wong, P.K.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 01.07.2000; Elsevier
• Subjects: 2,4-D; 2,4-Dichlorophenoxyacetic Acid - adverse effects; Analysis methods; Animal, plant and microbial ecology; Applied ecology; Applied sciences; Biological and medical sciences; biosynthesis; chlorophyll; Chlorophyll - biosynthesis; Chlorophyll A; Chlorophyta - drug effects; Chlorophyta - physiology; Dose-Response Relationship, Drug; Ecotoxicology, biological effects of pollution; Effects of pollution and side effects of pesticides on plants and fungi; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Glycine - adverse effects; Glycine - analogs & derivatives; Glyphosate; growth rate; Herbicides - adverse effects; Hong Kong; indicator species; Natural water pollution; paraquat; Paraquat - adverse effects; photosynthesis; Photosynthesis - drug effects; Pollution; Scenedesmus quadricauda; toxicity; Water Pollutants, Chemical - adverse effects; water pollution; Water treatment and pollution; China, People's Rep., Hong Kong; 2,4-D; Growth; Algae; Pesticides; Biological indicator; Organic phosphonate; Biosynthesis; Chlorophyceae; Glyphosate; Herbicide; Contamination; Chlorophyll a; Quaternary ammonium compound; Freshwater environment; Phytotoxicity; Chlorophyta; Paraquat; Water pollution; Photosynthesis; Thallophyta; Scenedesmus quadricauda

The effects of 2,4-D, glyphosate and paraquat on growth, photosynthesis and chlorophyll- a synthesis by a freshwater green alga, Scenedesmus quadricauda Berb 614, were determined. These herbicides are the most often used in Hong Kong. Within the concentration range 0.02–200 mg/l, paraquat was more t...