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11	Fenotypová plasticita a cytotypy \kur{Agrostis stolonifera} v České republice / Phenotypic plasticity and cytotypes of \kur{Agrostis stolonifera} in the Czech Republic KUBEŠOVÁ, Magdalena January 2007 (has links) Presence and range of phenotypic plasticity in the Agrostis stolonifera polyploid complex (Poaceae) was studied in the territory of the Czech Republic. Plants were cultivated under different experimental conditions. Stomatal size of different Agrostis stolonifera cytotypes was measured. Flow cytometry was applied for genome size estimation. Ploidy levels were determined for more than 150 samples of Agrostis stolonifera as well as several specimens of Agrostis canina, A. capillaris, A. gigantea, A. rupestris and A. vinealis. Absolute DNA content was estimated in all studied species. Isozyme analysis was used to test the possibility of the hybrid origin of pentaploid individuals of Agrostis stolonifera species.
12	Pátrání po původu vysokohorských endemických zvonků z okruhu Campanula rotundifolia agg. ve střední Evropě. / Searching for the origin of high-altitude endemic harebells from Campanula rotundifolia agg. in central Europe. Folbrová, Magdaléna January 2019 (has links) Complex Campanula rotundifolia agg. is rich in endemic species, especially in the high- elevated mountain ranges. Extreme climatic conditions in the subalpine habitats can lead to a convergence in plant's morphology between plants isolated in different mountain ranges. Because of the lack of morphological differentiation, it is very difficult to reconstruct the evolutionary history of bellflowers C. scheuchzeri from the Alps, C. bohemica from the Krkonoše Mountains and C. tatrae from the Western Carpathians. A similarity in morphology and the same ploidy level can suggest vicariance from a large area of an ancestor species. However, regarding the continuous morphological variation, the high-altitudinal endemics could have originated by local adaptation from originally low-land species. DNA-ploidy level and genome size were detected by flow cytometry. Taxonomically important characters were found using multivariate morphometric analysis. The phenotypic plasticity of the taxon C. tatrae was tested by a cultivation experiment. Genetic structure of the studied species was revealed using molecular marker - microsatellites (7 variable primers). Studied taxa were tetraploids, but some possessed different genome size. The morphological differentiation was mainly due to characters like calyx lobes length...
13	Biosystematic studies in the family Cyperaceae / Biosystematic studies in the family Cyperaceae KOŠNAR, Jan January 2013 (has links) The thesis was focused on the microevolutionary mechanisms that contribute to morphological diversity in selected members of the sedge family (Cyperaceae). Natural hybridization, evidenced from both morphological characters and molecular markers, was revealed to be a potentially important source of diversification in the tropical spikerushes of Eleocharis subgenus Limnochloa. High levels of phenotypic plasticity of clonal growth but rare genetic (ecotypic) differentiation among contrasting morphotypes were found in the polymorphic species Carex nigra, which implied that taxonomic splitting of the species was unreasonable.
14	Anabaena - Phenotypic and genotypic diversity of planktonic strains in fishponds and reservoirs of the Czech Republic / Anabaena - Phenotypic and genotypic diversity of planktonic strains in fishponds and reservoirs of the Czech Republic ZAPOMĚLOVÁ, Eliška January 2008 (has links) Morphological diversity of 61 Anabaena populations of 13 morphospecies was described under the field conditions of Czech fishponds and reservoirs. Polyphasic approach was then applied in classification of 45 clonal strains isolated from those populations. Detailed morphological analyses were performed and partial 16S rRNA gene sequences were obtained for 33 of the strains, and secondary metabolite production was evaluated in 20 strains. Plasticity of morphological characteristics under varied conditions of light, temperature, nitrogen and phosphorus was studied in selected strains, as well as their temperature and light growth requirements. The results were then discussed with respect to the delimitation of single Anabaena morphospecies. A new genus Sphaerospermum was defined for the morphospecies Anabaena kisseleviana, A. reniformis and Aphanizomenon aphanizomenoides, whose phenotypic and genotypic features differed considerably from all other Anabaena morphospecies. Unique information was provided on the occurrence and distribution of A. reniformis and Aph. aphanizomenoides in the Czech Republic.
15	Erdflechten und ihre Gesellschaften in Nordhessen mit besonderer Berücksichtigung der morphologischen und genetischen Variabilität bei Cladonia furcata (Hudson) Schrader / Terricolous lichens and their communities in North Hessen (Germany) with special emphasis on the morphological and genetical variability of Cladonia furcata (Hudson) Schrader Günzl, Bettina 22 January 2004 (has links) No description available. Mathematics and Computer Science 580 Pflanzen (Botanik) Nordhessen Flechten Erdflechtengesellschaften Rote Liste-Arten Schutzmaßnahmen Cladonia furcata Flechten-Inhaltsstoffe morphologische Variabilität genetische Variabilität ITS rDNA ITS-Varianten Photobiont Asterochloris Mycobiont North Hessen (Germany) lichens terricolous lichen communities Red Data Species protective measures Cladonia furcata chemical variation morphological variability genetical variability ITS rDNA ITS-variants photobiont Asterochloris mycobiont 42.44 42.51 42.48 WWH 000: Flechten, Lichenes {Botanik}

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