Sökning: "cpDNA"

Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet cpDNA.

  1. 1. Systematics, phylogeography and multiple origins of morphs in two species complexes belonging to Cistaceae, Helianthemum oelandicum and H. nummularium

    Författare :Eman Soubani; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; introgression; parallel evolution; postglacial migration; genetic polymorphism; Pleistocene; morphometry; H. nummularium; Helianthemum oelandicum; cpDNA;

    Sammanfattning : The Helianthemum oelandicum complex shows considerable morphological variation across its geographic distribution in Europe and western Asia. By combining four primer pairs and four restriction enzymes I identified nine cpDNA haplotypes with distinct geographical distributions. LÄS MER

  3. 2. Patterns of geographic variation in Silene section Elisanthe (Caryophyllaceae): hybridization and migrational history

    Författare :Louise Hathaway; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chemotaxonomy. Physiology of nonvascular plants; phytogeography; morphology; outbreeding depression; Systematic botany; taxonomy; ITS; fitnes; inbreeding depression; AFLP; PCR-RFLP; cpDNA; gene flow; postglacial migration; geographic variation; hybridization; Silene latifolia; Silene section Elisanthe; Silene dioica; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

    Sammanfattning : Large-scale patterns of genetic variation in chloroplast (cp) and nuclear DNA in the widespread European herb species Silene latifolia and S. dioica were investigated using cpPCR-RFLPs, non-coding cpDNA sequences, AFLPs and sequences of the internal transcribed spacers (ITS) of nuclear ribosomal DNA (rDNA). LÄS MER

  4. 3. Phylogenetic Support and Chloroplast Genome Evolution in Sileneae (Caryophyllaceae)

    Författare :Per Erixon; Bengt Oxelman; Sean Graham; Uppsala universitet; []
    Nyckelord :Biology; Phylogenetics; Bayesian inference; Bootstrapping; cpDNA; Sileneae; Interspecific chloroplast recombination; Hybridization; clpP; Positive selection; Extreme substitution rates; Biologi;

    Sammanfattning : Evolutionary biology is dependent on accurate phylogenies. In this thesis two branch support methods, Bayesian posterior probablities and bootstrap frequencies, were evaluated with simulated data and empirical data from the chloroplast genome. LÄS MER

  5. 4. Phylogenetic Relationships of Silene sect. Melandrium and Allied Taxa (Caryophyllaceae), as Deduced from Multiple Gene Trees

    Författare :Anja Rautenberg; Bengt Oxelman; Mikael Thollesson; Magnus Lidén; Freek Bakker; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silene; Elisanthe; Melandrium; Conoimorpha; Caryophyllaceae; Silene multinervia; relative dating; extreme substitution rates; phylogeny; BEST; BEAST; cpDNA; mtDNA; RNA polymerase; RPA2; RPB2; RPD2; SlX1; SlY1; ITS; introgression; incongruent phylogenies; chromosome count; coalescent; Bayes Factors; Systematics and phylogenetics; Systematik och fylogeni; systematisk botanik; Systematic Botany;

    Sammanfattning : This thesis focuses on phylogenetic relationships among some of the major lineages in Silene subgenus Behenantha (Caryophyllaceae) using DNA sequences from multiple, potentially unlinked gene regions from a large taxonomic and geographic sample. Both traditional phylogenetic analyses and a strategy to infer species trees and gene trees in a joint approach are used. LÄS MER

  7. 5. Geographic Variation, Hybridization and Evolution in the Bladder Campions, Silene vulgaris and S. uniflora (Caryophyllaceae)

    Författare :Eva Månsby; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; Växtgenetik; Systematic botany; taxonomy; morphology; phytogeography; Plant genetics; Paternal effects; Seed polymorphism; Ecology; Ekologi; Crossing barriers; cpDNA markers; Genetic variation; Hybridization; Post-glacial migration; Allozymes; Silene vulgaris; Silene uniflora; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

    Sammanfattning : In the present thesis, I investigated the inter- and intraspecific variation in the Silene vulgaris/uniflora species-complex (the bladder campions). I have focused on the effects of past and present hybridization both on a large scale ? over the whole of Europe ? and on a local scale. Silene vulgaris and S. LÄS MER