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Účinnost vybraných silic při ochraně bramboru vůči bakterii Pectobacterium atrosepticum
Mokrá, Kristýna
The aim of the thesis was to evaluate the effect of the active substances of essential oils (thyme, oregano, rosemary, natural thymol, synthetic thymol, carvacrol, menthon, cinnamon) against the Gram-negative bacterium Pectobacterium atrosepticum. The efficacy of essential oils was determined under laboratory conditions using the disk diffusion method, the values of minimum inhibitory concentration and minimum bactericidal concentration. Also, a pathogenicity test was performed on potato tubers with selected essential oils (thyme, thymol natural, and cinnamon). The components natural thymol, synthetic thymol, and the essential oil of cinnamon showed the best results, while menthone and carvacrol showed poor effects against the tested bacteria.
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Ochrana rajčat ve skleníkových a polních podmínkách
Mokrá, Kristýna
The main aim of my bachelor thesis was to evaluate the infection of several varieties of edible tomato by pathogens in one locality, in a greenhouse, and under field conditions. The next step was to compare the obtained results with the results of the infection at the nearest observation point of ÚKZÚZ. The attention was paid to the cultivated varieties Zlatava, Blueberry, Start F1 and to the determined pathogens such as Alternaria spp., Fulvia fulva and Phytophthora infestans. The survey was conducted in 2020 in a private garden. Tomatoes were monitored during the growing season according to BBCH phases and parts infected by pathogens were evaluated according to the Methodology of utility value tests of ÚKZÚZ. The infected parts were cultured on a PDA in a laboratory, followed by the determination of pathogens using a laboratory microscope. The results of infection of individual pathogens on the selected variety in a specific environment were evaluated and expressed in a graphical representation.
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