Sökning: "clonal plants"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden clonal plants.

  1. 1. Physiological integration and morphological plasticity in extensive clonal plants

    Författare :Tina D'Hertefeldt; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plant ecology; Maianthemum; Carex; Clonal plants; tracers; Växtekologi;

    Sammanfattning : Clonal plants show a large variation in physiological integration, i.e. the translocation of resources among ramets within the clone. LÄS MER

  3. 2. Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae

    Författare :Marie Widén; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systematisk botanik; chemotaxonomy. Physiology of nonvascular plants; phytogeography; morphology; taxonomy; Systematic botany; clonal structure; isoloci; disomic inheritance; genetic diversity; polyploidy; male sterility; sex expression; pollen limitation; sexual reproduction; gynodioecy; Glechoma hederacea; Lamiaceae; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

    Sammanfattning : Clonal structure and reproductive biology in the gynodioecious herb Glechoma hederacea L. Lamiaceae The frequencies of females, hermaphrodites and partially male-sterile (PMS) genets of Glechoma hederacea were estimated in natural populations in S Sweden. The frequency of females and PMS genets in natural populations varied from 0 to 100%. LÄS MER

  4. 3. Reproductive strategies and liming responses in forest field-layer flora

    Författare :Annika Kruuse af Verchou; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; species turnover; species richness; sexual reproduction; podzol; pH; Lamiastrum galeobdolon; forest liming; demography; Cambisol; clonal plants; SRE; vegetative reproduction; VRE; Plant ecology; Växtekologi;

    Sammanfattning : Liming increased species richness, in accordance with the species pool hypothesis, and number of plants of individual species in beech forest field-layer vegetation, by increasing establishment by seedlings and vegetative offspring. Turnover rates also increased, suggesting the explanatory value of the carousel model. LÄS MER

  5. 4. Life-history traits and population differentiation in a clonal plant: implications for establishment, persistence and weediness

    Författare :Johanna Eneström; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; weediness; Clonal plant; resource sharing; resource storage; partitioning of genetic variation; seedling development; seed recruitment; Aegopodium podagraria;

    Sammanfattning : Clonality is wide-spread among plants, and clonal plants dominate many habitats and include many highly invasive species. Clonal growth incurs both advantages and costs and clonal plants often have reduced sexual reproduction compared to non-clonal plants which could be expected to lower genetic variation and hence evolutionary potential. LÄS MER

  7. 5. Genetic variation, clonal diversity and breeding system in sedges (Carex)

    Författare :Olle Jonsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systematic botany; Carex ericetorum; Carex caryophyllea; Carex bigelowii; Carex arenaria; phenology; niche; genet identification; clone size; isozyme; gene flow; introgression; allozyme; gene diversity; population genetics; taxonomy; morphology; phytogeography; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

    Sammanfattning : In this thesis I investigate genetic variation in clonal plants within the wind-pollinated plant family Cyperaceae and, in particular, in species of Carex. Clonal diversity and the spatial distribution of clones (genets) within populations was investigated in Carex bigelowii (in Iceland and Scandinavia) and C. LÄS MER