Dépôt numérique

Repellency of Essential Oils to Frankliniella occidentalis (Pergande) as affected by type of oil and polymer release.

Hollingsworth, Robert G.; Lacroix, Monique ORCID logoORCID: https://orcid.org/0000-0002-2042-4033; Picard, Isabelle et Salmieri, Stéphane (2012). Repellency of Essential Oils to Frankliniella occidentalis (Pergande) as affected by type of oil and polymer release. In: Phytochemial Society of North America 50th Anniversary Meeting, December 10-15, 2011, Hawaii.

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Eight essential oils (at 0.125–1.0% V/V in acetone) were separately deposited on leaf disks to evaluate their potential to repel Western flower thrips [Franliniella occidentalis (Pergande)] adult females (WFT). The proportion of thrips counted on control leaf disks in choice bioassays was used as the measure of repellence. The most repellent essential oils were incorporated into polymer matrices, i.e. methylcellulose or alginate (0.5 or 1% W/V) in order to verify the potential of the polymer to extend repellence over time (24–120 h). At a concentration of 0.5%, Thymus vulgaris and Satureja montanawere the most repellent essential oils. For these treatments, no WFT were counted on treated leaf disks 60 minutes after the start of the test. Thymus serpyllum and Origanum compactum also showed repellence values of 0.9 at this con-centration. When S. montana and T. serpyllum were incorporated within polymer matrices, close to 100% repellence was achieved even after 48 hours regardless of the concentration of the alginate polymer used (0.5 or 1%). This level of repellence was maintained for 3 days in the presence of T. serpyllum and for 4 days in the presence of S. montana. Results also showed that the alginate based-coating was repellent by itself.

Type de document: Document issu d'une conférence ou d'un atelier
Informations complémentaires: Affiche scientifique PHARMACEUTICAL BIOLOGY 50 (5): 537-538
Mots-clés libres: -
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 28 janv. 2024 15:05
Dernière modification: 28 janv. 2024 15:05
URI: https://espace.inrs.ca/id/eprint/14126

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