Dose-response relationships between herbicides with different modes of action and growth of Lemna paucicostata: an improved ecotoxicological method.

摘要: Lemna species are widely used in ecotoxicological research to assess the phytotoxicity of environmental compounds. The purpose work described this paper was further refine spp. bioassay, making it more robust and useful comparing results between laboratories. A nondestructive image analysis method measure growth as affected by herbicides during a time course. We tested 26 herbicides, with many 19 different modes action, on leaf area paucicostata establish complete dose-response relationships. By using 3,5-dichlorophenol reference compound, EC50 (concentration that inhibited 50%) values can be compared. ranged from 0.003 μM for sulcotrione 407 asulam. Complete parameters were obtained will better allow comparison these those other These should give information anyone who works address questions herbicide residues compartments, screening new herbicidal compounds, or assessment phytotoxic side effects any compound.