Search for dissertations about: "SYSTEMATICS"
Showing result 1 - 5 of 147 swedish dissertations containing the word SYSTEMATICS.
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1. 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
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2. Spikemoss patterns : Systematics and historical biogeography of Selaginellaceae
Abstract : Selaginellaceae, spikemosses, is a heterosporous plant family belonging to the lycophytes. With an estimated age of some 350 million years, the family is historically important as one of the oldest known groups of vascular plants. Selaginellaceae is herbaceous with a worldwide distribution. However, the majority of the ca. READ MORE
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3. Systematics of Eucoilini : Exploring the diversity of a poorly known group of Cynipoid parasitic wasps
Abstract : Many animal species are still undiscovered, even in Sweden. This thesis deals with the wasps of the subfamily Eucoilinae (of Figitidae, Cynipoidea), a poorly known group of small parasitoids of Dipteran flies. READ MORE
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4. Systematics of Woodsia : Ferns, bioinformatics and more
Abstract : Ferns are one of the three main clades of vascular plants. They have few easily studied morphological characters, reflected in a historically unstable classification. The fern genus Woodsia is known to have a complex evolutionary history including numerous polyploid taxa and hybrids. READ MORE
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5. Evolution and biodiversity of the Ixoroideae (Rubiaceae)
Abstract : The phylogenetic relationships within subfamily Ixoroideae of the coffee family are investigated by phylogenetic reconstruction of molecular data, including regions of the chloroplast DNA (matK, ndhF, rbcL, rps16, trnH-psbA, trnS-G, and trnT-F), and the nuclear ribosomal DNA (ITS). The evolution of morphological characters within the group are inferred, with focus on characters used in classification. READ MORE