Search for dissertations about: "plastid DNA"
Showing result 1 - 5 of 16 swedish dissertations containing the words plastid DNA.
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1. Systematics, phylogeography and polyploid evolution in the Dactylorhiza maculata complex (Orchidaceae)
Abstract : The aim of this thesis was to investigate and describe different aspects of variation in the Dactylorhiza maculata complex and to relate the variation patterns to underlying biological processes such as Quaternary migration history, hybridization and polyploid evolution. The variation patterns were analysed at various geographic levels using molecular markers (plastid DNA and ITS of nrDNA), cytological data, morphometry and ecological data. READ MORE
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2. Systematics of polyploid Dactylorhiza (Orchidaceae) - genetic diversity, phylogeography and evolution
Abstract : This thesis examines genetic variation in allotetraploids of the Dactylorhiza incarnata/maculata polyploid complex in different parts of Europe. The molecular markers used were AFLPs, allozymes, ITS, nuclear microsatellites and plastid DNA markers. READ MORE
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3. Kleptoplasty in Dinophysis spp : Ecological role and evolutionary implications
Abstract : This thesis deals with the question of whether planktonic protits of the genus Dinophysis have permanent plastids (=chloroplasts) or practice kleptoplasty, i.e. acquire plastids via predation on other microorganisms. Sequencing the plastid 16S rDNA of Dinophysis spp. READ MORE
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4. Phylogeny and topological incongruence in the Rubioideae (Rubiaceae)
Abstract : The work with this thesis has focused on evolutionary relationships in the Rubioideae, the most species-rich subfamily of the large and diverse coffee family (Rubiaceae). Despite considerable efforts during the last decades, uncertainty regarding several relationships in this group has remained, either as a result of unconvincing statistic support, incongruent results, or insufficient taxon sampling. READ MORE
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5. Systematics and polyploid evolution in Potentilleae (Rosaceae)
Abstract : This thesis comprises studies of the phylogenetic relationships in the flowering plant clade Potentilleae in Rosaceae. The relationships were elucidated by using DNA sequence data from the nuclear genome as well as from the plastid genome. In particular, the focus of the studies was the investigation of allopolyploidy, i.e. READ MORE