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The principles of plant architecture studies and their application to herbs
Domin, Matyáš ; Klimešová, Jitka (advisor) ; Hrouda, Adam (referee)
Plant architecture deals with the structure of the plant body and its dynamics. It mainly uses the characteristics of stem branching. In my work, I provide an overview of several concepts of plant architecture that have been applied to herbaceous plants, demonstrating how the principles of growth architecture can be utilized in plant ecology. These concepts include the bud bank, Corner's rule and reiteration. The bud bank has been defined as an alternative to the seed bank, where in perennial plants, the above-ground biomass is restored after seasonal dormancy or disruption from specialized organs carrying buds. The Corner's rule describes a correlation between the size of plant organs, and the size of the apical meristem of the stem plays a crucial role in this correlation. The size of the apical meristem determines the size of leaves, their number on the annual increment, the size of inflorescences, and consequently, the production of seeds. Reiteration examines how the branching of a plant is influenced by disturbances or suboptimal growth conditions. These three concepts are interconnected and can shed light on the ecology of herbaceous plants regarding their survival strategies in ecosystems with repeated disturbances. Not only do they describe how a plant responds to disruptions, but they...
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Vplyv fotoperiódy na apikálnu dominanciu u hrachu
Füleky, Martin
The part of my thesis was to make literary research about influence of photoperiod, light intensity, phytohormones (mainly auxins, cytokinins and strigolactones) and other factors on shoot branching in pea. The experiment was focused on finding the influence of different day lengths (8 hours, 16 hours, 24 hours) on shoot branching in pea. In experiment intact plants, plants decapitated above 3rd node and plants decapitated above cotyledons were analyzed. Increases in length of the branches were observed for 5 days. Graphs and statistical analysis were generated from the data. After that, samples from plants were taken. These samples were used in semiquantitave RT-PCR with analysis of intensity of gene expression from agarose gel.
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