Sökning: "Caryophyllaceae"

Visar resultat 11 - 15 av 18 avhandlingar innehållade ordet Caryophyllaceae.

  1. 11. Quantitative conservation genetics of the rare plants Scabiosa canescens (Dipsacaceae) and Silene diclinis (Caryophyllaceae)

    Författare :Patrik Waldmann; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; conservation biology; quantitative genetics; Scabiosa canescens; Silene diclinis; Ecology; Ekologi;

    Sammanfattning : This thesis concerns quantitative genetic aspects of the conservation biology of two rare plants, Scabiosa canescens and Silene diclinis. Particular attention was given to the effects of genetic drift on the structuring of variation in allozymes and quantitative characters, the association between (current) population size and quantitative genetic variation, the level of inbreeding depression in fitness characters and morphology in a small, isolated population, and the effect of inbreeding and intraspecific hybridization on developmental instability. LÄS MER

  3. 12. 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

  4. 13. Pollination, oviposition and seed predation by flower visiting insects in bladder campions (Silene vulgaris S.L., Caryophyllaceae)

    Författare :Mats W. Pettersson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 14. Geographic differentiation and population history in Silene dioica and S. hifacensis: variation in chloroplast DNA and allozymes

    Författare :Ursula Malm; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; morphology; taxonomy; Systematic botany; conservation biology; endemic; chloroplast DNA; allozyme; hybridization; gene flow; geographic variation; postglacial migration; genetic diversity; Silene; phytogeography; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

    Sammanfattning : In this thesis I used allozymes and PCR-RFLP analysis of chloroplast DNA (cpDNA) to investigate geographic differentiation within the widespread Silene dioica (L.) Clairv. (Caryophyllaceae) and the narrowly-distributed S. hifacensis Rouy ex Willk. LÄS MER

  7. 15. Fröheteromorfismen hos havsnarv och saltnarv : Spergularia media and Spergularia marina and their heteromorphic seed revisited

    Författare :Anders Telenius; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The flexibility of adaptation in plants to variable environmental conditions is greatly increased by the production of two or more different kinds of seeds. Such heteromorphic seeds, either with or without a winged margin, are characteristic of several species belonging to the genus Spergularia (Caryophyllaceae). LÄS MER