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Porovnání vývoje plodnosti a sňatečnosti v České republice a v Irsku
Blechová, Veronika
The subject of this bachelor thesis is development of fertility rate and marriage in the Czech Republic and Ireland between years 1989 and 2012. The theoretical part generally describes terms as fertility rate, marriage, their basic indicators, factors that influence these demographic processes and historical development of fertility rate and marriage in both countries. Last chapter of the theoretical part gives basic explanation of the time series. Practical part includes comparison of development of fertility rate and marriage, which is implemented by using time series based on the alignment of the trend line and using the average growth rate in the Czech Republic and in Ireland.
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Vliv modifikace receptoru ultrafialového světla na jeho funkci
Blechová, Veronika
Ultraviolet radiation has a negative effect on living organisms, but it is also signal modulating growth and development in plants. This thesis is focused on the effects of UV-B light in Arabidopsis thaliana mutants in UV-signalling pathway with modulated cytokinin level. Our data show that UV-B decrease the quantum yield of the PS II (Fv/Fm) in both mutant lines. Decrease of Fv/Fm was accompanied by growth retardation which could be reverted by exogenous application of 1 µM BAP. Determination of the pigments showed that cytokinins interact with UV-B light and this interaction is dependent on the functional UVR8. On the other hand, inhibition of the thermomorphogenesis by cytokinins is independent of the functional UVR8. Experimental work was also focused on the creation of the fusion genes containing modified UVR8 sequence with marker gene eGFP. The correct sequence of the recombinant GFP was confirmed by commercial sequencing.
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Význam cytokininů v indukci kvetení při různých teplotních podmínkách
Blechová, Veronika
Global climate change i sone of the most serious environmental problém and its negative socio-economic consequences represent serious threats for sustainable agriculture in many countries. Sudden increase in ambient temperature by a few °C over the plant optimal growth temperature, causes flower abortion or damage of the fruits, and thus reduce productivity and yield in agriculture. Cytokinins are important phytohormones which are involved in regu-lation of the growth and development but their role in the plant adaptation to increased ambient temperature is not well understood. The aim of this work was description of the role of cytoki-nins in the thermomorphogenesis and plants transition into generative phase under different temperature regimes in Arabidopsis thaliana. Experiments with transgenic plants with modu-lated cytokinin levels showed that decreased cytokinin levels has great impact on the plant growth and temperature could even potentiate this effect. Cytokinins were shown to induce flowering and this effect was independent of the ambient temperature. As next, it was found that higher ambient temperature has great impact on the seed production It was proven that cultivation plants at 29 °C cause pollen abortion independently of cytokinin levels.
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Porovnání vývoje plodnosti a sňatečnosti v České republice a v Irsku
Blechová, Veronika
The subject of this bachelor thesis is development of fertility rate and marriage in the Czech Republic and Ireland between years 1989 and 2012. The theoretical part generally describes terms as fertility rate, marriage, their basic indicators, factors that influence these demographic processes and historical development of fertility rate and marriage in both countries. Last chapter of the theoretical part gives basic explanation of the time series. Practical part includes comparison of development of fertility rate and marriage, which is implemented by using time series based on the alignment of the trend line and using the average growth rate in the Czech Republic and in Ireland.
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