Nematicidal Activity of Plant Essential Oils and Components From Ajowan (<I>Trachyspermum ammi</I> ), Allspice (<I>Pimenta dioica</I> ) and Litsea (<I>Litsea cubeba</I> ) Essential Oils Against Pine Wood Nematode (<I>Bursaphelenchus Xylophilus</I> )
Keywords:
ajowan, allspice, litsea, nematicidal activity, pine wood nematode, plant essential oilsAbstract
Commercial plant essential oils from 26 plant species were tested for their nematicidal activities against the pinewood nematode, Bursaphelenchus xylophilus. Good nematicidal activity against B. xylophilus was achieved with essential oils of ajowan (Trachyspermum ammi), allspice (Pimenta dioica) and litsea (Litsea cubeba). Analysis by gas chromatography-mass spectrometry led to identification of 12, 6 and 16 major compounds from ajowan, allspice and litsea oils, respectively. These compounds from three plant essential oils were tested individually for their nematicidal activities against the pinewood nematode. LC50 values of geranial, isoeugenol, methyl isoeugenol, eugenol, methyl eugenol and neral against pine wood nematodes were 0.120, 0.200, 0.210, 0.480, 0.517 and 0.525 mg/ml, respectively. The essential oils described herein merit further study as potential nematicides against the pinewood nematode.Downloads
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