Palabras clave
mortalidad
barrenador menor de los granos
amilólisis
proteólisis
trigo
Cómo citar
Plaudit
Resumen
La fracción volátil de los aceites esenciales de Eucalyptus globulus y Eucalyptus camaldulensis se utilizaron para evaluar su actividad insecticida sobre el barrenador menor de los granos Rhyzopertha dominica (F.). Muestras de granos de trigo fueron infestadas con el insecto y expuestas a los vapores de diferentes volúmenes (5, 10 y 15 μL) de los aceites por diferentes periodos (24, 48 y 72 h). La actividad enzimática amilolítica y proteolítica se determinaron en las progenies (F1) que emergieron de los granos. Ambos aceites ocasionaron una estimulación en la actividad enzimática amilolítica y proteolítica de las progenies; sin embargo, solamente E. globulus ocasionó la muerte de éstas (P < 0.05). Al incrementar el volumen de aceite de E. camadulensis, la actividad proteolítica del insecto aumentó, incluso al mayor tiempo de exposición. Los resultados de este estudio muestran que la fracción volátil de los aceites esenciales de eucalipto, especialmente la de E. globulus, es un agente insecticida efectivo para el control de R. dominica en trigo almacenado.
Citas
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Derechos de autor 2012 Revista Chapingo Serie Ciencias Forestales y del Ambiente