Effect of (E)-chalcone on potato-cyst nematodes (Globodera pallida and G. rostochiensis)

3 páginas, 3 figuras, 18 referencias.-- [email protected] soil-borne plant diseases, nematodes are responsible for large crop losses. Conventional control methods are currently based on the use of low-specificity neurotoxic compounds, such as carbamates, and phosphorylated and halogenated organic compounds. Some of these substances cause global environmental problems; for example, methyl bromide has a destructive effect on the ozonelayeranditsproductionisbeingrestricted. (E)-Chalcone(trans-1,3-diphenylpropenone)was found highly toxic for phytoparasitic nematodes (CL50 ) 33 μM), acting also as a potent inhibitor of nematode hatch (HIC50 ) 7 μM). (E)-Chalcone provides new insight in the search for novel environmentally sound alternatives to conventional nematicidal compounds.This work was financed by the local Canary Government (Project 11/08-03-90), CICYT (Project SAF 92-1028), and the Colegio Libre de Emeritos.Peer reviewe