Sökning: "Birgitta Bremer"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Birgitta Bremer.

  1. 1. Phylogenetic Studies in the Gentianales – Approaches at Different Taxonomic Levels

    Författare :Maria Backlund; Mats Thulin; Birgitta Bremer; Kåre Bremer; Mikael Hedrén; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Gentianales; phylogeny; classification; rbcL; trnT-F; rps16; ndhF ndh; Paederieae; Putorieae; Rubiaceae; Loganiaceae; Buddlejaceae; Gelsemiaceae; Apocynaceae; Gentianaceae; Biologi; Biology; Biologi;

    Sammanfattning : This thesis deals with phylogenetic relationships at different taxonomic levels. All the plants studied are or have been included in the order Gentianales, which comprises about 17 200 species. LÄS MER

  3. 2. Taxonomy of Schistidium (Grimmiaceae, Bryophyta)

    Författare :Birgitta Bremer; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Schistidium Brid. is a bryophyte genus mainly distributed in temperate to arctic zones. This revision is based on field, herbarium, and literature studies. There are descriptions of the genus and the 12 species and discussions of morphology, relationships, history, nomenclature, habitat, and distribution, and keys to accepted taxa. LÄS MER

  4. 3. Evolution and biodiversity of the Ixoroideae (Rubiaceae)

    Författare :Kent Kainulainen; Birgitta Bremer; Sylvain Razafimandimbison; Torsten Eriksson; Sandra Knapp; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Alberteae; character evolution; classification; Condamineeae; fruit evolution; Ixoroideae; phylogenetics; pollen presentation; Rubiaceae; systematics; taxonomy; Systematics and phylogenetics; Systematik och fylogeni; växtsystematik; Plant Systematics;

    Sammanfattning : 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. LÄS MER

  5. 4. Phylogeny of Selaginellaceae

    Författare :Petra Korall; Birgitta Bremer; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plant physiology; Växtfysiologi; fysiologisk botanik; Physiological Botany;

    Sammanfattning : The phylogeny of Selaginellaceae, a small, but historically important family of heterosporous lycopods, has been the focus of this thesis. The approximately 700 extant species are herbaceous and distributed all over the world, with most species in the tropics and subtropics. LÄS MER

  7. 5. Phylogenetic Studies in the Lamiales with Special Focus on Scrophulariaceae and Stilbaceae

    Författare :Per Kornhall; Birgitta Bremer; Nigel Barker; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Bayesian inference; parsimony; phylogeny; Scrophulariaceae; Stilbaceae; taxonomy; Biologi; Biology; Biologi;

    Sammanfattning : This thesis deals with plants from the flowering plant order Lamiales, and especially the two families Scrophulariaceae and Stilbaceae. Both families have their main geographical distribution in southern Africa. The thesis presents phylogenies of Scrophulariaceae s. lat. LÄS MER