Abstract

OCHOA FUENTES, Yisa María et al. In vitro organic control of Phytophthora cinnamomi with essential oils of oregano and clove. Rev. Mex. Cienc. Agríc [online]. 2019, vol.10, n.4, pp.961-968.  Epub May 22, 2020. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v10i4.1739.

Michoacán is the leading avocado producing state in the world; however, root diseases decimate and damage the trees causing their death. The aim of the present investigation was to evaluate the organic control of the in vitro growth of Phytophthora cinnamomi with essential oils of oregano (Lippia berlandieri) and clove (Syzygium aromaticum). In the months of October and November 2016, root samples were collected from trees with symptoms of the disease in avocado (Persea americana Mill. Var. Hass), in the INIFAP experimental garden located in San Juan Nuevo Parangaricutiro, Michoacán. The isolates were identified morphologically and molecularly. The control of P. cinnamomi with essential oils of oregano and clove was evaluated determining the mean inhibitory concentration and its fiducial limits to 95% by means of a Probit regression by the method of maximum likelihood. The analyzes were carried out using the statistical program R 3.4. According to the results obtained, in relation to the inhibition of growth there is a reduction in the growth of P. cinnamomi. The essential oils of clove (Syzygium aromaticum) and oregano (Lippia berlandieri) are a natural alternative for the control of the oomycete P. cinnamomi for their fungicidal activity at low concentrations so they can be included in integrated disease management programs.

Keywords : Persea americana Mill. Var. Hass.; essential oil; growth rate; inhibition.

        · abstract in Spanish     · text in English | Spanish     · English ( pdf ) | Spanish ( pdf )