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Molecules 2011, 16(1), 403-411; doi:10.3390/molecules16010403

Herbicidal Activity of Peumus boldus and Drimys winterii Essential Oils from Chile

1 Instituto Agroforestal Mediterráneo, Universidad Politécnica de Valencia, Camino de Vera s/n, C.P. 46022 Valencia, Spain 2 Centro Regional de Estudios en Alimentos Saludables, CREAS, Blanco 1623 Of.1402, Valparaíso, Chile 3 Departamento de Farmacologia, Facultat de Farmàcia, Universitat de València, Avda Vicent Andrés Estellés s/n, C.P. 46100 Burjassot, Spain
* Author to whom correspondence should be addressed.
Received: 29 November 2010 / Revised: 17 December 2010 / Accepted: 7 January 2011 / Published: 10 January 2011
(This article belongs to the Section Natural Products)
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The essential oil composition of Peumus boldus and Drimys winterii was analyzed by means of capillary GC-FID and GC-MS. More than 96% of the total oil components (43 and 54 compounds, respectively) were identified, with ascaridole (51.17 ± 9.51), p-cymene (16.31 ± 2.52) and 1,8-cineole (14.45 ± 2.99) as the main compounds in P. boldus and g-eudesmol (21.65 ± 0.41), followed of elemol (12.03 ± 0.34) and terpinen-4-ol (11.56 ± 1.06) in D. winterii. The herbicidal activity was tested against Amaranthus hybridus and Portulaca oleracea. P. boldus essential oil was the most phytotoxic against both weeds, inhibiting seed germination and seedling growth at all concentrations assayed (0.125–1 µL/mL). D. winterii essential oil did not show any effect on A. hybridus germination and only affected P. oleracea germination at the highest concentration. The results suggest the possible use of the essential oil from P. boldus as a natural herbicide.
Keywords: essential oils; phytotoxicity; germination; seedling growth; monoterpenes essential oils; phytotoxicity; germination; seedling growth; monoterpenes
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Verdeguer, M.; García-Rellán, D.; Boira, H.; Pérez, E.; Gandolfo, S.; Blázquez, M.A. Herbicidal Activity of Peumus boldus and Drimys winterii Essential Oils from Chile. Molecules 2011, 16, 403-411.

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