Investigation of the influence of avermectin-containing preparations on the resistance of tomato lines to fusarium blight in vitro

Keywords: Solanum lycopersicum, Streptomyces avermitilis, avermectin, Fusarium oxysporum f. sp. lycopersici, Fusarium solani


Aim. Studying of the influence of avermectin-containing polyfunctional preparations Avercom and Avercom Nova on the enhancement of the resistance to fusarium wilt of tomato plants in vitro. Methods. Tomato plants were cultivated in vitro for 30 days in the presence of 25 μl/l of preparations Avercom and Avercom Nova. Analysis of the resistance of tomato plants to fusarium wilt was carried out by spraying with a conidia suspension of Fusarium oxysporum f. sp. lycopersici and F. solani. Resistance to fusarium wilt has been evaluated for 15 days after inoculation with the use of a 9-point scale. Results. It was established that cultivation in vitro of tomato plants cv. Money Maker in the presence of preparations Avercom and Avercom Nova at concentration 25 μl/l enhances the resistance of the selected plants to fusarium wilt caused by F. oxysporum f. sp. lycopersici and F. solani. In particular, resistance to these phytopathogens increased on average from 4 to 6 points on the 10th day after inoculation with F. oxysporum f. sp. lycopersici, and from 2 to 6 points on the 6th day after inoculation with F. solani. Conclusions. The results of the study show the enhancement of the resistance of tomato plants grown in the presence of Avercom and Avercom Nova preparations to the causative agents of the tomato fusarium wilt which indicates the prospects and promising opportunities of the use of microbial biopreparations for the protection of plants against biotic stress.


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