|
|
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...
|
|
|
Ecological constraints limiting the root-sprouting ability in wetland plant species
SOSNOVÁ, Monika
Wetland plant species rely largely on vegetative reproduction. Although all types of clonal growth organs are found in wetlands, special adaptations, e.g., turions, fragmentation and budding, are more frequent in true aquatic communities. However, root-sprouting is underrepresented, although it can be beneficial under disturbed conditions. This thesis focuses on ecological constrains potentially hindering root-sprouting in wetlands. This ability was studied in a wetland herb Rorippa palustris in relation to life history, injury timing and carbon economy of a plant. In addition, plant regeneration following submergence and severe disturbance was assessed.
|
guest ::
