Antifeedant activity of botanical crude extracts and their fractions on Bemisia tabaci (Homoptera: Aleyrodidae) adults: I. Gliricidia sepium (Fabaceae)
Cargando...
Fecha
Authors
Flores, Guillermo
Hilje Quirós, Luko
Mora, Gerardo A.
Carballo, Manuel
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad de Costa Rica
Resumen
Descripción
Bemisia tabaci is an important virus vector on a number of crops worldwide. Therefore, a preventive approach to deal with viral epidemics may be the deployment of repellents or phagodeterrents at earlier stages of plant development (critical period). Thus, the crude extract and four fractions thereof (water, water:methanol, methanol, and diethyl ether) of mother-of-cocoa (Gliricidia sepium, Fabaceae) were tested for phagodeterrence to B. tabaci adults under greenhouse conditions, on tomato plants, in Costa Rica. Both restricted-choice and unrestricted-choice experiments showed that the crude extract and some fractions exerted such effect on the insect. In the former (in sleeve cages), three fractions caused deterrence at doses as low as 0.1% (methanol), 0.5% (water:methanol) and 1.5% (diethyl ether). However, in the latter (plants exposed in a greenhouse) no one of the fractions performed well, suggesting that the deterrent principles somehow decomposed under the experimental conditions.
Palabras clave
Citación
Colecciones
Aprobación
Revisión
Complementado por
Referenciado por
Rights and licensing
acceso abierto
Copyright (c) 2014 International Journal of Tropical Biology and Conservation
Copyright (c) 2014 International Journal of Tropical Biology and Conservation