Insecticidal activity of harmala alkaloids from peganum harmala against spurge hawk moth (Hyles Euphorbiae)
Abstract
To reduce some unexpected side effects of synthetic pesticides on plant,
environment, and even on atmosphere, plant derived materials are considered in
effort to use as pesticide. The toxicity and repellence of alkaloids (Harmine and
Harmaline) extracted from
Peganum harmala
L. (Zygophyllaceae) seeds were
assayed against Spurge Hawk Moth (
Hyles euphorbiae)
larvae. Repellent effect
of Harmine and Harmaline were observed and evaluated for a period of 30 hours.
The mortality percentage was found significantly higher on insects exposed to
Harmine in all four concentrations. However, the highest repellent activity of
Harmine was determined at concentration of 3 mg/mL, no survived larvae was
found after 30 hours. It was concluded that Harmine toxicity activity is more
effective on Spurge Hawk Moth (
Hyles euphorbiae)
larvae than that of
Harmaline.
Keywords:
Peganum harmala, Hyles euphorbiae, Harmine, Harmaline.