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Gewählte Master / Diploma Thesis:

Cornelia Eisenmann (2019): Samendormanz und Keimfähigkeit des Kleinen Baldrians (Valeriana dioica), einer gefährdeten Pflanzenart der Feucht- und Auengrünlandgesellschaften.
Master / Diploma Thesis - Institut für Botanik (Botany), BOKU-Universität für Bodenkultur, pp 75. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
The master thesis examined the Small Marsh Valerian, Valeriana dioica and their generative abilities. For this purpose, germination tests were carried out in the germination chamber and a germination and establishment experiment in the glasshouse. The seed material was collected in summer 2017 on various natural populations of Valeriana dioica in Vienna. The germination tests were carried out as a two-factorial experiment. Within the general germination conditions, the seeds were taken from a single population in Neusiedl. The further experiments were separated according to origin, with fresh seed material manually harvest (immediately after seed ripening) as well as with cold-stratificated seeds. Other factors were light / darkness and different temperature regimes. For this purpose, the climate chamber of the botanical institute was used. After determination of the optimal germination conditions, a greenhouse experiment was carried out with various types of litter layer (litter from dicotyledonus forbs, litter from small sedge community, Phragmites litter, no litter). Thus, the competitiveness of the species compared to location-specific competitors were examined on the basis of locally obtained litter. Statements about the dormancy and germination behavior of Valeriana dioica were as expected. Also of importance is the variability of the examined parameters between the populations of a species under different site conditions. The results of the investigations are to be used for protective measurements of the Small Marsh Valerian and other endangered species with similar competitive behavior as well as for nature conservation management of wetland and hay meadows.

Beurteilende(r): Bernhardt Karl Georg
1.Mitwirkender: Rasran Leonid

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