Avancerad sökning

Hittade 3 avhandlingar som matchar ovanstående sökkriterier.

  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. Phylogeny and classification of the tribe Vanguerieae (Rubiaceae)

    Författare :Henrik Lantz; Torsten Eriksson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Vanguerieae; Rubiacaeae; phylogeny; classification; morphology; ITS; trnT-F; rpl16; Biologi; Biology; Biologi; systematisk botanik; Systematic Botany;

    Sammanfattning : Vanguerieae is a tribe in the mainly tropical angiosperm family Rubiaceae. The tribe currently comprises around 600 species in 27 genera, with the major part of the species distributed in Africa south of the Sahara. The phylogeny of the tribe was investigated using both molecular and morphological data. 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