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Hydroponic plant cultivation and examples of practical use.
WEIDENTHALER, Jakub
The aim of the thesis is to present the different possibilities of hydroponic cultivation. The basic principle of hydroponics is explained in the literature review. Furthermore, the individual possibilities of practical cultivation of plants in domestic production as well as in large-scale production are presented in detail. The advantages and disadvantages of the most used methods are also explained. The main advantages and disadvantages of hydroponic cultivation are assessed. The biggest benefit of hydroponics is growing plants without the need for soil. Hydroponics is thus also suitable for indoor growing in the home. It can thus be used in urban areas for vertical cultivation, where there is a huge saving of space. In view of the loss of agricultural land and the deterioration of its quality, hydroponics seems to be the crop of the future. The saving of water consumption, mainly in recirculation systems, is also a major advantage. But there are also clear limiting disadvantages. The biggest problem is operating costs. In 2022, during the energy crisis, the cost of energy is proving to be the most limiting factor. Most hydroponic systems need a constant supply of electricity to effective run.
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Relationship between the genome size of mycobiont and ecological strategy of lichens
Konečná, Eliška ; Malíček, Jiří (advisor) ; Vondrák, Jan (referee)
The inner organisation of organisms originates from the information contained within its DNA. In addition, the size of the genome itself may influence the function of the organism. Unlike many other groups of organisms, genome size is only known for a very limited number of lichen mycobionts. So far it has been only speculated whether there is a connection between genome size, the ecology and the traits of lichens. The goal of my thesis is to measure genome size of a sufficient amount of lichen mycobionts to be able to determine possible connection between genome size and ecology or functional traits of these lichen species. I succesfully measured the genome size of 50 lichen species using flow cytometry (FCM). I did molecular phylogenetic analysis of 141 taxa with known genome size in order to recognize the influence of phylogeny on genome size of these species. Two genes - ITS and mtSSU - were used for the phylogenetic analysis. Statistical analysis was performed using measured genome sizes, ecologicaly relevant traits of lichen species and my phylogenetic tree. I found that genome size might be connected to substrate preference, vegetative reproduction or the type of the lichens' photobiont. A correlation of genome size and life strategy - larger genome sizes connected to K-strategy, whereas smaller...
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Photochemical Derivatization of Helicenes.
Jakubec, Martin ; Ghosh, I. ; Storch, Jan ; König, B.
This work is focused on the use of simple helicene derivatives as substrates for modern photochemical methods. Halogen containing substrates are transformed in the reductive pathway to helicenyl radicals, before being trapped by different radical traps. In the oxidative pathway, activated alkoxyhelicenes undergo photoredox catalyzed reactions, yielding various carbon-carbon, as well as carbon-heteroatom containing compounds.\n
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22018110615051 - PDF
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