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Výskyt jmelí bílého (Viscum album) ve Frýdku-Místku
Kovalčík, Lukáš
The literary research which includes description of European mistletoe (Viscum album) was written according to available literature. It engages in botanical characteristics, morphological signs and physiology of mistletoe. There are also described the ways of dissemination of mistletoe, sorting of woody plants by their resistance to this hemiparasite. The next part of the thesis summarizes the damage caused by mistletoe, possible protection, and types of treatment of affected trees. Three localities in the city of Frýdek-Místek where woody plants, which are heavily affected by European mistletoe, occur were chosen for practical evaluation. There are these woody plants species present: Canadian popler (Populus x canadensis), small-leaved lime (Tilia cordata) and rowen (Sorbus aucuparia). During the research, the oldest mistletoe specimen was detected to be 20 years old. Differences between achievable ages of a hemiparasite and a host plant can be the cause, why affection by mistletoe leads to death of a host plant. The lowest age when mistletoe starts to affect woody plants is species specific and is between 11 and 30 years. Knowledge of this lowest age is important for determination of the time to start monitoring these trees.
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