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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Is the role of myrmecochory in primary succession on industrial deposits in landscape determined by trophic ant relationships: nectaries/aphids/plant seeds? (a case of legume plants)
 Klárová, Magdaléna ; Kovář, Pavel (advisor) ; Štefánek, Michal (referee)
The role of ants in primary vegetation succession is well-known. Ants bring into extreme habitat organic compounds and dispers seeds. However, there is a gap in the knowledge which factors influnce motivation of ants to disperse seeds. One of may hypotheses could be the existence of relationship between myrmecochory and trophic interaction of ants with EFN or aphids. Goal of the bachelor theses is to describe some factors, which could be important for research of relationship between myrmecochory and trophic interaction.
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Antinutritional sulfur-containing compounds in \kur{Vicia} species
 HŮLA, Jan
This diploma thesis is focused on changes in the content of ?-glutamyl- S-vinylcysteine (GVC), the anti-nutritional factor present in narbon beans (Vicia narbonensis). The samples were collected at different stages of growth and separated into individual parts. There were prepared 32 extracts after freeze-drying and homogenisation in which it was determined the quantity of GVC by HPLC. The levels of GVC at different developmental stages were influenced by climatic conditions during growth, mainly by temperature and precipitation. The results obtained were compared with data published previously in the literature. The highest content of GVC was found in the seeds of narbon beans, especially at early stages of growth. Surprisingly, no GVC was detected in other parts of narbon beans (stems, leaves, beans, and roots).
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