Význam AM pro růst různých populací a ploidií druhu Aster amellus

Pánková, Hana

In my PhD thesis I focused on interaction between plant populations, soil conditions and mycorrhizal symbiosis in terms of local adaptation on localities with similar phosphorus content. For this study I used Aster amellus as a model plant species. Because the development of mycorrhizal symbiosis could be affected by differences between ploidy levels as well as soil conditions, I performed two sets of studies. In the first set I focused only on diploid populations and tested effect of marl/limestone on plant growth as well as development of mycorrhizal symbiosis in terms of local adaptations (Paper 1, 2, 3). In the second sets I tested effect of ploidy level on plant growth and development of mycorrhizal symbiosis in terms of local adaptation and therefore I used diploid and hexaploids populations from the same, marl, region (Paper 4). All these papers showed that percentage of root colonization was strongly different between limestone and marl region and in marl region it was almost 100 % for both ploidy levels. To be sure that high levels of root colonization behave still mutualisticaly in the soil with higher nutrients content than in the natural soil or if there is some switch point to parasitism, we performed additional pot experiment. In this experiment we asked if there is correlation of mycorrhizal...

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