| 体内研究: |
The insecticidal activity of crude essential oil extracted from Cymbopogon schoenanthus and of its main constituent, Piperitone, is assessed on different developmental stages of Callosobruchus maculatus (C. maculatus). Piperitone is toxic to C. maculatus adults with a LC50 value of 1.6 μL/L. Piperitone inhibits the development of newly laid eggs and of neonate larvae, but is less toxic than the crude extract to individuals developing inside the seeds. Piperitone shows the strongest ovicidal activity. All the eggs were aborted at 6.7 μL/L. Piperitone (10 μM) kills all the neonate larvae. |