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Attempts to use Coriandrum sativum essential oil to reduce seed pathogens

Alma Valiuskaite: Lithuanian Research Centre for Agriculture and Forestry Institute of Horticulture

<div>The increasing resistance to chemical fungicides drawn attention to the natural products antimicrobial activity. Essential oils are biodegradable and eco-friendly botanical products that are accumulated in various plants. The aim of this study was to evaluate antimicrobial effect of coriander essential oil against horticultural crops seed-borne pathogens. The research was carried out at the LAMMC Institute of Horticulture. The <em>Coriandrum sativum</em> essential oil was extracted from local material. The <em>C. sativum</em> essential oil efficacy against seed-borne fungi was evaluated by planting naturally contaminated onion and cucumber seeds on Petri plates containing potato dextrose agar (PDA). The PDA was cooled to 45 <sup>o</sup>C, and essential oil was added: 200 µl/l, 400 µl/l, 600 µl/l, 800 µl/l and 1000 µl/l. The antifungal activity of <em>C. sativum</em> essential oil on cucumber and onion revealed that several concentration differently inhibited bacterial and fungal pathogens. Evaluation of the efficiency of essential oil on seed-borne pathogens at a concentration of 1000 µl/l completely inhibited the pathogens. The concentration of 200 µl/l least inhibited bacterial and fungal pathogens. The essential oils as bio-fungicides would help to control seed-borne pathogens without increasing chemical fungicides resistance.</p> <p><strong>Keywords: </strong>Antifungal, Coriander oil, Inhibition, Pathogens.</div>