Author/Authors :
Amini، M. نويسنده Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran , , Safaie، N. نويسنده Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran , , almani، M. J. S نويسنده Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran , , Shams-bakhsh، M. نويسنده ,
Abstract :
In this study we surveyed the effectiveness, Minimum inhibitory concentration (MIC) and Minimum
fungicide concentration (MFC) of three medicinal plant essential oils of Zataria multiflora, Thymus
vulgaris and Thymus kotschyanus on the mycelial growth of four pathogenic fungi including
Pythium aphanidermatum, Rhizoctonia solani (AG4), Fusarium graminearum and Sclerotinia
sclerotiorum. The rates of growth inhibition were measured after placing active mycelial plugs of
each fungus on Petri dishes containing PDA amended with specific concentrations of essential oils
and incubated at 28 ± 1 ?C. The data were analyzed using MSTATC and SAS (version 9.1.3)
software. The results showed that these essential oils were very effective on the four studied plant
pathogenic fungi with growth inhibition average of 100% at 200?l/l concentration. Nevertheless,
MIC and MFC of the essential oils were variable depending to species of fungi. P. aphanidermatum
and S. sclerotiorum were the most sensitive and most resistant to the studied essential oils with
average growth inhibition 89.54% and 75.35%, respectively. Since growth inhibition of studied
essential oils was evident in this study, they have potential to control of some plant pathogenic fungi
and could be considered for developing new fungicides.
