Sökning: "Rosaceae"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet Rosaceae.

  1. 1. The evolutionary history of Geum (Rosaceae, Colurieae) : a study of ancient allopolyploid speciation

    Författare :Jenny E. E. Smedmark; Birgitta Bremer; Pamela S. Soltis; Stockholms universitet; []
    Nyckelord :Geum; Rosaceae; molecular phylogeny; allopolyploidy; morphological evolution; gynoecial development; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Allopolyploid speciation plays an important role in flowering plant evolution. Its contribution to diversity has been suggested to be significant in Geum. LÄS MER

  3. 2. Fraga vesca, dissertatione botanica, venia experient. Facult. Med. in Regia academ. Upsal. præside ... D. D. Carolo à Linné,... in auditorio Gustaviano die XXVI Maji a. MDCCLXXII. ... publicæ ventilationi proposita a ... Svenone Andr. Hedin Smolando

    Författare :Carl von Linné; Sven Anders Hedin; Carl von Linné; Uppsala universitet; []
    Nyckelord :Rosaceae; Berries; Plants; medicinal; Rosaceae; Medicinal plants; Berries; Rosväxter; Bär; Medicinalväxter;

    Sammanfattning : .... LÄS MER

  4. 3. Systematics and polyploid evolution in Potentilleae (Rosaceae)

    Författare :Magnus Lundberg; Torsten Eriksson; Jürg Schönenberger; Bengt Oxelman; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Potentilleae; Fragariinae; Potentilla; Sibbaldia; Fragaria; Alchemilla; systematics; phylogeny; polyploidy; autopolyploidy; allopolyploidy; reticulate evolution; Systematics and phylogenetics; Systematik och fylogeni; växtsystematik; Plant Systematics;

    Sammanfattning : 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. LÄS MER

  5. 4. Morphometric and molecular variation in the Nordic dogroses (Rosa Sect. Caninae, Rosaceae)

    Författare :Åsa Olsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systematisk botanik; chemotaxonomy. Physiology of nonvascular plants; Genetic diversity; Geographic differentiation; Systematic botany; RAPDs; taxonomy; morphology; phytogeography; kemotaxonomi. Växters fysiologi inte kärlväxter .; taxonomi; morfologi;

    Sammanfattning : In the present thesis, I investigate the hierarchical structure of morphometric and molecular diversity within and between the Nordic dogroses (Rosa Sect. Caninae, Rosaceae). I also investigate patterns of geographic differentiation and taxonomic relationships within the group. LÄS MER

  7. 5. Phylogenetic and phyloclimatic inference of the evolution of Potentilleae (Rosaseae)

    Författare :Mats H. Töpel; Göteborgs universitet; []
    Nyckelord :Potentilla; Ivesia; Horkelia; allopolyploidization; TGGE; Beringia;

    Sammanfattning : Polyploidization has occurred many times during the evolution of angiosperms. Allopolyploidization is believed to be the process behind many of these genome duplications, and has resulted in a genetically diverse angiosperm flora. LÄS MER