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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.

Stress signaling pathway regulates proteins which are critical for reprogramming of metabolic synthesis and gene expression to achieve homeostasis and cellular stability under stress conditions. The understanding of stress signaling mechanism and response will increase the ability to improve plant‘s oralgal resistance to stress. The theoretical part summarizes the current knowledge of biosynthetic pathway and miRNA roles and presents selected model organisms (Chlamydomonas, Arabidopsis). As well, it introduces abiotic stress and seeks links between abiotic factors, secondary metabolites and miRNAs. The experimental part deals with selected abiotic factors [lycorine, UV-C radiation, ZnSe quantum dots (QDs), CO2] and their influence on Chlamydomonas reinhardtii and Arabidopsis thaliana. It has been shown that 100 and 250µM ZnSe QDs in the form of foliar feeding caused oxidative stress in the leaves without morphological changes in Arabidopsis thaliana. Additionaly, 250µM concentration inhibited the viability of Agrobacterium tumefaciens, a Gram-negative bacterium infecting plants, by 60 %. Furthermore, the regulatory biochemical, molecular and post-transcriptional pathways of Chlamydomonas reinhardtii response to UV-C radiation and lycorine were identified. Further, three specific miRNAs (Cre06.g281600, Cre06.g30900, Cre16.g662600) have been studied in connection with carbon concentrating mechanism (CCM) in Chlamydomonas reinhardtii. Expression of mentioned miRNAs had a positive correlation with target mRNA and revealed the potential regulatory role of miRNAs during CCM adaprion and possibility to increase the efficiency of photosynthesis. Despite, the role of epigenetics including miRNA interference is still unclear in the unicellular algae.

Zinc is an essential element that has many important functions in our organism. The objective of the thesis is to verify the effect of dietary zinc nanocomplexes as an alternative source of zinc for the animal organism. For the experimental model of this experiment male rats of the outbred strain Wistar albino were used. The rats were divided into 3 groups. Six males were housed in each group. The first group (control) (n = 6) of the rats served as a control one and the zinc dose was not increased. The second group (Zn-EDT) of animals (n = 6) was dosed with zinc nanoparticles (200 mg/kg diet). The third group (Zn-NTA) of rats (n = 6) was dosed with zinc in the form of zinc nanoparticles (200 mg/kg diet). The rats were sacrificed after 15 days of experimentation. The animals samples of erythrocytes and liver were extracted and subjected to appropriate analyses immediately after collection. Antioxidant activity was analysed using FR and DPPH methods, SOD activity, metallothionein and zinc concentration. The results show that the antioxidant capacity in the erythrocytes decreased statistically in Zn-NTA (P < 0.05). The concentration of zinc in erythrocytes has increased inconclusively. There was a statistically significant increase (P < 0.05) of metallothionein in the liver.

This paper explores issues of the work stress of Czech employees using the data from Quality of working life survey conducted in Sociological institute of Czech Academy of science in 2014. However work stress is generally seen as a serious problem, employers in the Czech Republic do not take it enough into account yet. The aim of this paper is to define groups of employees which are the most endangered by work stress, sources of stress (stressors) and explore the relationship between work stress and life satisfaction with special focus on employee status. As a theoretical background, we use the theory of spillover (transmission between life spheres), theories of high status stress and low status stress and balance models of work stress (namely Job demands-control model and Effort- reward imbalance model). Apart of work demands, overtime work, low social support and negative phenomenon as well as monotonous and unattractive job content and poor job security were identified as important stressors. As the most endangered group were identified those who have lower employee status, high level of stress and also lower satisfaction in all studied aspects of life. Situation of this group can be seen as a serious social problem. All identified stressors occur in this group together with other unfavourable...

Stress is no new phenomenon, but became one of the leading causes of personnel turnover and increasing production cost in the twentieth century. A very large amount of studies have done on stress to create a deeper understanding of the causes, as well as the effects of stress. The purpose of this study therefore is to gain knowledge as to the nature and scope of stress experienced by members of the South African Police Service Dog unit in Durban. The South African Police Service have undergone 'n total change and this change, as any other, has not gone without problems. It is natural human nature to avoid change, and this has led to the fact that certain members have found the changes quite easy to adapt to, but others have not adapted to the new ways. Said changes have also taken place in the Dog unit in Durban. This specialized unit within the South African Police Service supply a service which is of cardinal importance and it is therefore necessary to take note of the stress experienced by members of this unit. The study not only focused on how the members experience stress, but also on the causes and effects of said experience. Furthermore, special attention was given to certain personality traits which members have displayed. The literature study preceding the results will help to understand and relate the results. The number of respondents experiencing high to very high levels of stress are greater than those experiencing normal levels of stress. This is due to work related aspects such as job characteristics inherent to the job, remuneration, added benefits, and personnel policy as well as career opportunities. Furthermore, specific personality traits / characteristics were identified which identify respondents experiencing very high levels of stress. Knowledge gained regarding the levels of stress experienced by members, as well as the nature and scope of stress, can be used to produce aids to assist in the recruitment of members for the unit. It is clear that members wanting to work in the unit needs to be emotionally, psychologically and physically well and it is clear that results from this study can further the process to ensure this. Lastly, due to the results of this study, specialized stress management workshops can be developed for the unit. / Thesis (MCom (Human Resources Management))--University of Pretoria, 2004. / Human Resource Management / unrestricted

The teoretical part of the thesis seeks of the zoom and description of plant stress, the possibility of using anti-stress products and their effects on plants. Description of selected vegetable species and the impact date for sowing seed. Practical work is dedicated to monitoring anti-stress effect products, their effects on plants and the effect on the overall structure of plants. After statistical analysis has been evidence for an effect of the individual plant morphological characteristics of plants.

At the experimental plot in the area of Faculty of Horticulture in Lednice was created attempt to determine the effect of growth regulators on the model plant ( Spiraea bumalda 'Anthony Waterer ' ) growing in containers. The purpose was according to morphological and physiological parameters to determine whether the application of growth regulators reduce the effect of stress factors affecting the quality of plants . Growth regulators for this experiment were - abscisic acid, 24 - epibrassinolid, kinetin and spermine (each at three different concentrations ) . It was a total of 12 variants and one control. Of the morphological parameters were evaluated: weight fresh biomass, weight of dried biomass, area of leaf, length of shoots, root collar diameter . Of the physiological parameters were evaluated - index the content of chlorophyll in leaves and chlorophyll fluorescence . The obtained data were statistically analyzed and then compared the effect of various phytohormones. The resulting effect in terms of importance for nursery production was the effect of 24 -epibrassinolidu the most measured parameters.