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The object of this thesis was to evaluate the effect of selected auxiliary product Pentakeep Super on Capsicum annuum. The theoretical part approaches the issue of stress factors in plants and the use of Pentakeep Super. The practical part of this thesis described the experiment based on the grounds of the Faculty of Horticulture in 2016. Varieties of Capsicum annuum 'Zlata' and 'Granova' were used as model cultures. The effect of the selected product for improvement of quality and increase of production was studied. In addition the data obtained from the experiment were statistically analyzed. Statistical analysis showed effects on the contentual and morphological parameters of the peppers. Results shows, that the application of Pentakeep have positive effect on mineral elements in fruits.

The dissertation concentrated on Chinese cabbage variety comparison - (Brassica pekinensis Ruprecht) and Chinese cabbage (Brassica chinensis L.), that come from Asia, with common varieties grown in the Czech Republic. The main point was to evaluate the nutritive ingredients and morphological and growth parameters. Five varieties were watched according to the individual criteria. These varieties were marked with numbers to be clearer. After successful filling and evaluation of the laboratory results we can say that in the certain chosen parameters the detected values were higher in the varieties that come from Asia. The results concerned C vitamin and other minerals content.

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The aim of this thesis is to describe the items of the gene pool of the species Rheum L. located in the experimental garden of the Faculty of Horticulture of Mendel University in Lednice, to propose the procedure of relocation of this gene pool and evaluate the results of this relocation and to record the wintering of plants and the overall condition of the gene pool as at 30 March 2016. Included in this thesis is the process of monitoring and evaluation of the items of this gene pool. Descriptors were evaluated upon the basis of the valid classification system for the Rheum L species. A total of 44 items were evaluated. These evaluations were combined with laboratory tests of vitamin C, oxalic acid, mononitrate and fibre contents in stems. Tests for refractive solids, solids and overall antioxidant capacity were carried out. Samples of roots of medicinal species of rhubarb were obtained but laboratory tests for the contents were not carried out due to technical difficulties.

The variety of Ocimum basilicum plays a primary role among culinary herbs in world trade. The main objective of this study was to determine yield and chemical composition of the essential oil, total phenolic and flavonoid content, total antioxidant capacity, L-ascorbic acid, crude fiber, nitrates, chlorophyll a, b, and carotenoids content. This work should be verified what influence had the variety, the seasonal, and the external factors affecting to said substances. Experiment was established in the greenhouse of the Faculty of Horticulture, Mendel University in Brno. The basil varieties, namely 'Ohře', 'Lettuce Leaf', 'Purple Opaal', 'Dark Green', 'Mammolo Genovese', 'Manes', and 'Red Rubin' were grown as a pot culture during the years 2014-2016. The essential oil were isolated by distillation and analysed by Gas Chromatography-Mass Spectrometry (GC-MS). The total phenolic content (TPC) was determinated spectrophotometrically according to Folin-Ciocalteau colorimetric method. Determinations of the total flavonoid content (TFC) were measured with the aluminium chloride colorimetric assay. The total antioxidant capacity (TAC) was evaluated by their ability to scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH) stable radicals. The ascorbic acid content was determined by High Performance Liquid Chromatography (HPLC). The crude ?ber content was determined by the enzymatic gravimetric method. The nitrates content was determined by Ion Selective Electrode (ISE). Chlorophyll a, b, and carotenoids were determinated spectrophototmetrically in the acetone extracts. The essential oil production was from 2.45 to 18.12 mg.kg-1 d. w., depending on variety and season. GC-MS analysis showed that the essential oil from 7 basil varieties consist of 41 components. Main constituents of the essential oil were methyleugenol (4.59-48.13 %), followed by methylchavicol (4.59-48.13 %), ß-linalool (0.43-33.25 %), eugenol (0.45-33.52 %), ?-bergamotene (0.07-13.40 %), eucalyptol (0.71-11.70 %), and ?-cadinene (0.24-8.90 %). The 'Purple Opaal', 'Dark Green', 'Mammolo Genovese', 'Mánes' and 'Red Rubin' varieties were identified as methyleugenol chemotypes while 'Ohře' varied according to the seasonal prevalence of linalool / methyleugenol. Variety 'Lettuce Leaf' was specific by the methylchavicol domination. The amount of TPC observed in methanol extracts were from 364.07 to 5606.43 mg GAE.100 g-1 d. w. TFC varied from 430.14-5979.69 mg CE.100 g-1 d. w. TAC were measured from 2.40 to 44.48 mM TE.100 g-1 d. w. L-ascorbic acid was ranged between 34.27-234.47 mg.kg-1 f. w. Content of crude fiber varied from 9.57 to 21.74 %. The mean levels of nitates were from 178.67-17918.21 mg.kg-1 f. w. The average contents of chlorophyll a, b, and carotenoids were 3.01-5.15, 1.26-2.65, and 0.65-1.53 mg.g-1 f. w., respectively. The influence of the variety and the season on the evaluated substances was significantly confirmed. The external factors on growth (temperature, relative humidity and solar irradiance) had an impact on all evaluated parameters with the exception of the contents of essential oils and TAC. For further cultivation of basil in pots, the most suitable are varieties 'Mánes' (excellent source of essential oil), 'Lettuce Leaf' and 'Red Rubin' (for their antioxidant capacity, and high contents of crude fiber). On the contrary, prone to the accumulation of nitrates were purple leaves varieties 'Purple Opaal' and 'Red Rubin'.

The work deals with (in a literary summary) résumé of the knowledge about european elder [Sambucus nigra L.], it also describes the content of important substances and its utilization. The samples were collected at selected areas. The obtained samples were analyzed at the Research Institute of Brewing and Malting, a.s. using a UPLC liquid chromatograph with a PDA detector. It was determined the content of chlorogenic acid, vanilic acid, coffee acid, coumaric acid, quercetin, rutin, isoquercitrin and hyperoside was determined. The highest content was found in the extraction of free phenolic substances.

The literary part of the diploma thesis is trying to assess the possibilities of cultivation, contained substances and possibility of Portulaca oleracea L.. The practical part of the diploma thesis is dedicated to the establishment of the experiment, which was established from seed supplied by different suppliers. The experiment consisted of two variants (seed and seedling), which between them have been compared in terms of nutritional value and yield in three dates of collection. On the basis of a statistical evaluation for demonstrating differences has been found to influence the content of the nutritional value, while option seedling achieves better the results. The term collection had an impact on the content of vitamin C, fibre, potassium, nitrate and yield. The possibility of using Portulaca oleracea L. have been confirmed during the tasting, which was interested in finding this kind of vegetable.

This diploma thesis is about some less grown pome fruit species like Rowan, Service Tree, Hawthorn, Medlar, Crataegomespilus Simon-Louis and Sorbopyrus Scheele. Thesis is focused on the observation of individual phenophases for this species and recording of the numbers of flowers and fruits on them. Work is focused mainly on pomological description of mentioned species and variety. Contain statistically processed data about fruit size. In experimental part of the thesis are values for vitamin C content, carotenoids and minerals (K, Na, Ca, Mg) content, which were also valuated statistically. The result outcome of this thesis is chosen species and cultivar for the climate conditions of Czech Republic.

The aim of the thesis was to compile a review of literature on the species Actinidia arguta and other main representatives of this genus (Actinidia deliciosa and Actinidia kolomikta), together with a description of the genus Actinidia. For selected genotypes to determine the content of the substance in the flesh and skins of species Actinidia arguta (varieties 'Issai', 'Ananasnaya' a seedling 1) and Actinidia deliciosa (varieties 'Hayward' and 'Sorelli'). Mentioned representatives described their origin and distribution, botanical characteristics, varietal characteristics, their habitat requirements, methods of reproduction and substances contained in fruits. The experimental part deals with the determination of ascorbic acid, all acids, antioxidants, soluble solids content and the determined methods FRAP and DPPH. The results of individual measurements were processed and statistically analyzed. The values obtained were sorted into tables and graphs, and subsequently described in the text part.