Evaluation of the potential yield and primary symptoms of Xanthomonas campestris pv. campestris infection in Asian vegetables grown in the Czech Republic

Selected cultivars of Asian brassicacean vegetables were evaluated for their yield potential and susceptibility to bacterial infection. Chinese broccoli, two cultivars of Chinese cabbage ('Dwarf milk cabbage' and improved 'Tahtsai'), and mizuna were grown in the conditions of the Czech Republic. Morphological and yield parameters for the field conditions (plant height, plant diameter, and marketable weight) were verified. In addition, genotypes were tested for resistance to black rot [Xanthomonas campestris pv. campestris (Xcc)] at the planting stage. The results show that a very promising genotype of mizuna, which yielded best (1,478 g per plant). Chinese cabbage (cultivar 'Dwarf milk cabbage') also showed high yield values (2,839 g per plant), especially when compared to the reference value for Napa cabbage. Chinese Cabbage 1 ('Dwarf milk cabbage') and mizuna also showed a low susceptibility to infection by bacterial black rot at the planting stage. Both cultivars reached Level 2 (median) of infection, which corresponds to the extent of the symptoms on 25% of the leaf surface.O

Oriental brassica vegetables – alternatives for a higher intake of health-promoting substances

Brassica vegetables are one of the most important groups of vegetables in terms of their nutritional composition. The aim of this work was to evaluate the lesser known Asian species from the family Brassicaceae cultivated in the conditions of the Czech Republic and to carry out a comparison with cabbage as a reference species. For the evaluation, two species of Chinese broccoli, two cultivars of Chinese cabbage (‘Dwarf milk cabbage’ and improved ‘Tahtsai’) and mizuna were selected. Among the properties evaluated were dry matter production, crude fiber content, vitamin C, carotenoids, TAC, flavonoids, phenols, and mineral composition (K, Na, Ca, and Mg). The highest contents of vitamin C were found in mizuna and the lowest in Chinese Cabbage 2. In comparison to the reference species, the majority of the properties of Chinese cabbage had higher values in comparison to traditional cabbage (range: 101–577%). Positive results were also found for mizuna. The worst brassica was Chinese Cabbage 2 in which the majority of the properties measured were lower in comparison to traditional cabbage

With food to health : proceedings of the 10th International scientific and professional conference

Proceedings contains 13 original scientific papers, 10 professional papers and 2 review papers which were presented at "10th International Scientific and Professional Conference WITH FOOD TO HEALTH", organised in following sections: Nutrition, Dietetics and diet therapy, Functional food and food supplemnents, Food safety, Food analysis, Production of safe food and food with added nutritional value

Porovnanie kvality ekologickej a konvenčnej produkcie vybraných zeleninových druhov

In the vintages 2007 (autumn culture) and 2008 (spring and autumn culture), there were grown broccoli varieties ''Belstar F1'' , ''Lucky F1'' and Japanese type of radish, variety ''Jarola F1'', on the certified organic land in Prague - Troja , and simultaneously on the neighbouring conventional plot to evaluate their quality. The experiment was set up with two densities of vegetation , broccoli: 0.6 x 0.5 m, 0.5 x 0.5 m and radish: 0.20 x 0.35 m, 0.30 x 0.35 m. The market production was evaluated for subsequent nutritional values : dry matter , fiber , total carbohydrates, vitamin C, total carotenoids and chlorophyll, minerals (potassium, sodium, calcium, magnesium), total antioxidant capacity ,further also nitrates, electrochemical value (electrical conductivity, pH, redox potential) is expressed as a P value and a sensorial value using the descriptors recommended in the publication (Kopec, Horčín, 1997) . The evaluation of organic and conventional production of broccoli and radish showed that the ecological system of cultivation inconclusively increased the content of carotenoids and minerals in broccoli and vitamin C, carotenoids and sodium in radish. In other nutritional characters, the difference was negligible. Statistically significant effect of the most characters was evaluated also for the season of cultivation and occasionally the density of vegetation. Sensory evaluation of broccoli was in the spring term in favor of conventional production and in the autumn of 2008 in favor of organic production . The radish grown in autumn 2007 did not show any significant difference, the autumn term of growing in 2008 was in favor of organic production

The influence of genotype and season on the biological potential of chilli pepper cultivars

The aim of this work was to evaluate the yield parameters (number of fruits per plant, total yield per plant and average fruit weight), level of ascorbic acid, and pungency (SHU units) of different genotypes of chilli pepper in protected cultivation in the Czech Republic in order to identify a suitable and prospective chilli cultivar which could be recommended to the Central European growers. The experiment took place in two years (2016 and 2018) in a plastic greenhouse with 17 genotypes of the species Capsicum chinense Jacq., C. annuum L., C. baccatum L. and C. pubescens Ruiz. & Pav. From the viewpoint of yield parameters and stability of yield, ‘Habanero Red’, ‘Jamaican Yellow’, ‘Jwala’ and ‘Rocoto Orange’ can be recommended for Czech conditions. The majority of the tested cultivars were a good source of vitamin C (mostly reaching a value of at least 800 mg kg−1). From the perspective of pungency, the following cultivars can be recommended: low pungency – Fish, Jalapeño, Jwala, Pimiento de Padrón and Rocoto Orange; medium pungency – Cayenne Gold, NuMex Piñata and Scotch Bonnet Orange; and high pungency – Aji Lemon Drop, Cayenne Purple, TMSR and Tricolor Variegata

Mikrobiološke karakteristike šarana gajenog u prečišćenoj otpadnoj vodi poreklom iz klanice

Wastewater from abattoirs in some countries is disposed of into water bodies without adequate removal of contaminants. Therefore, the use of wastewater in fish production could pose a serious risk for humans, fish and other aquatic organisms due to possible transfer of pathogenic bacteria in aquatic culture environments. The aims of the present study were to assess the levels of individual microorganisms in different tissues of common carp and to determine any correlation with the season of sampling and the type of analysed sample in common carp reared in an integrated production system that used purified water from an abattoir. A fish pond was filled mostly with purified water from an abattoir, but also partly with well water. Carp fingerlings were stocked in the earthen fishpond in March and reared in ambient conditions. Fish were collected in the spring and autumn of the following year and the microbiological quality was assessed. Carp fillets with skin, gills and digestive tract samples were collected individually under aseptic conditions. All analyses were performed according to standard procedures. The levels of all the examined bacteria in the fish were under prescribed hygiene norms. Also, Listeria spp., sulphite-reducing clostridia and Staphylococcus aureus were not found in the samples. Furthermore, pathogenic bacteria, Salmonella and Listeria monocytogenes were not isolated from the samples. The hygienic quality of the fish produced in purified waste water from an abattoir was acceptable, and the common carp meat was safe for human consumption