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

Abstract

Abstract: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 -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.

Fitotoxicidad De Aceites Esenciales Y Extractos Acuosos De Plantas Mediterráneas Para El Control De Arvenses

“…La mayoría de trabajos que estudian la actividad alelopática de determinadas especies, normalmente se centran en ensayar el poder inhibitorio del aceite esencial (Dudai et al, 1999;Angelini et al, 2003;Scrivanti et al, 2003;Arminante et al, 2006;Azirak y Karaman, 2008;Verdeguer et al, 2009;Rolim de Almeida et al, 2010;Verdeguer et al, 2011) o de los extractos, principalmente acuosos (Dias et al, 1995(Dias et al, y 2004Fernández et al, 2006;Bagavathy y Xavier, 2007;Naseem et al, 2009), y en menor manera, extractos orgánicos (Yun y Choi, 2003;Pérez-Leal et al, 2005;Azizi y Fuji, 2006), sobre la germinación y el crecimiento de otras especies, pero en comparación con los anteriores, son relativamente pocos los trabajos que contrastan al mismo tiempo la actividad fitotóxica de aceites esenciales y extractos acuosos de la misma planta (Lee et al, 2002;Rosado et al, 2009). …”

“…como "mulching" redujo la incidencia de A. hybridus (CaamalMaldonado et al, 2001), mientras que los isotiocianatos mostraron gran capacidad inhibitoria de su germinación (Petersen et al, 2001). Nuestro grupo de investigación ha ensayado el potencial alelopático de aceites esenciales para el control de A. hybridus (Verdeguer et al, 2009;Verdeguer et al, 2011).…”

Chemical constitution and allelopathic effects of Curcuma zedoaria essential oil on lettuce achenes and tomato seeds

“…Numerous studies have reported the oxygenated monoterpenes 1.8-cineole, camphor, borneol, and terpinen-4-ol as being responsible for inhibiting the germination of the seeds of B. campestris (Yoshimura et al 2011), L. sativa, and Allium cepa (Vokou et al 2003;Pawlowski et al 2013), Portulaca oleracea (Verdeguer et al 2011), and many other plant species. The responses of the evaluated characteristics were dependent on the essential oil concentrations applied and the contact mode with the seeds (Macías et al 2004).…”

“…The principal methodologies employ substances isolated from essential oils or plant extracts (Farooq et al 2011) that are applied to reference bioindicator species responsive to allelochemicals, such as lettuce, tomato, and sesame (Qasem, 2010b;Albuquerque et al 2011). Determining the chemical constitution of the tested material is also an important step in those bioassays, to identify the specific allelopathic substances involved (Verdeguer et al 2011;Magalhães et al, 2012). The most widely used analytical methods are highperformance liquid chromatography and GC-MS gas chromatography-mass spectrometry (Zuzarte and Salgueiro, 2015).…”

A phytochemical of modern medicinal perspective

“…Capillary gas chromatography-flame ionization detector and GC-MS techniques were used for the determination of the phytochemicals of the essential oil of Drimys winterii and Peumus boldus. p-Cymene, ascaridole and 1,8-cineole were found to be present in the major portion and even though more than 96% [39].…”