National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Effect of climate on germination and selection of different genotypes
Duongová, Thuy Lien ; Münzbergová, Zuzana (advisor) ; Dostál, Petr (referee)
Understanding the response of species to climate change and their ability to adapt is the key to describe the future development of plant communities. The aim of the study is to determinate intraspecific variability in germination of Festuca rubra from different original climates in response to novel climatic regimes. This study also observes if different climatic regimes lead to selection of different genotypes. Festuca rubra is a widespread clonal grass occurring in the Northern hemisphere. The plant material comes from 11 localities distributed along a climatic grid of factorially crossed temperature and precipitation situated in western Norway. The project was carried out in growth chambers, where the germination of seeds was monitored in two different temperature conditions and in two moisture treatments. Germinated seeds were planted into pots remaining in the same treatment where they germinated. Seedlings from one Petri dish grew together in one pot. One population, from the coldest and the driest original locality, growing in the warm-wet and cold-wet treatments was genetically analysed using microsatellites. Germination of the species was higher and faster in warm than in cold conditions, showing that germination of the species is enhanced by higher temperature. Germination was higher in...
Effect of climate variation on species germination
Duongová, Thuy Lien ; Münzbergová, Zuzana (advisor) ; Kladivová, Anna (referee)
Climatic changes have been influencing plants since their colonization of land. Plants always find a way to adapt to these new changes. Also germination of seeds and seedling recruitment have been adapting to climate change. During the last 150 years the current global warming is changing the germinalibity of seeds, the timing of germination, the rate of germination and the seedling recruitment. This bachelor thesis summarizes results of studies on how climate change effects the germination of plants and the seedling recruitment. This work also presents methods used for studying these questions. Studies often focus on germinalibity, the rate of germination and the timing of germination. Some of the species are profiting from these changes and we can observe faster germination and better germinalibity. Reduction of germination occurs in other species and so their fitness is also reduced. The number of studies observing inter-specific variability in germination is greater than studies on intra-specific variability. In my future work I would thus like to focus on the effect of climate change on intra-specific variability in germination. Powered by TCPDF (www.tcpdf.org)

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