Sökning: "Juniperus"

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

  1. 1. Functional Diversification among MADS-Box Genes and the Evolution of Conifer Seed Cone Development

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Erika Groth; Uppsala universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; conifer; seed cone; evo-devo; morphology; plant development; plant evolution; gene family; gene evolution; AGAMOUS; MADS-box; transcription factor; Picea; Cryptomeria; Thujopsis; Juniperus; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Biologi med inriktning mot fysiologisk botanik; Biology with specialization in Physiological Botany;

    Sammanfattning : MADS-box genes are important regulators of reproductive development in seed plants, including both flowering plants and conifers. In this thesis the evolution of the AGAMOUS subfamily of MADS-box genes, and what the ancestral function of this group of genes might have been in the early seed plants about 300 million years ago, was addressed by the discovery of two novel conifer genes, both basal to all previously known AGAMOUS subfamily genes. LÄS MER

  2. 2. Improved seed handling techniques for Juniperus polycarpos

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Abolfazl Daneshvar; Sveriges lantbruksuniversitet.; [2015]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Juniperus polycarpos (K. Koch) is one of six native juniper forest tree species in Iran whose population size is declining continuously. The ultimate aim of the research presented in this thesis was to increase the regeneration potential of J. LÄS MER

  3. 3. Description of spatial and temporal distributions of epiphytic lichens

    Detta är en avhandling från Institutionen för fysik, kemi och biologi

    Författare :Håkan Lättman; Linköpings universitet.; Linköpings universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; centroid; continuity; lichen; movement; range shift; direction; dispersal; ecological continuity; establishment; global change; global warming; habitat availability; håkan lättman; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Sammanfattning : Lichens are, in most cases, sensitive to anthropogenic factors such as air pollution, global warming, forestry and fragmentation. Two studies are included in this thesis. The first is an evaluation of the importance of old oak for the rare epiphytic lichen Cliostomum corrugatum (Ach.) Fr. LÄS MER

  4. 4. Plant-Derived Chemicals as Tick Repellents

    Detta är en avhandling från Uppsala : Universitetsbiblioteket

    Författare :Samira Sadek Garboui; Uppsala universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ixodes ricinus; plants; essential oils; tick repellent; Sweden; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Sammanfattning : Ixodes ricinus is the main vector of Lyme borreliosis and Tick-borne encephalitis in Europe. Repellents provide a practical means of protection against tick bites and can therefore reduce transmission of tick-borne diseases. LÄS MER

  5. 5. Getting to know Trioza apicalis (Homoptera: Psylloidea) – a Specialist Host-Alternating Insect with a Tiny Olfactory System

    Detta är en avhandling från Chemical Ecology and Ecotoxicology, Department of Biology, Lund University

    Författare :Lina Kristoffersen; Lunds universitet.; Lund University.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physiology of invertebrates; Djurs anatomi och morfologi; Entomologi; plant parasitology; Entomology; Ekologi; Ecology; glomeruli; antennal lobe; olfactory receptor neurons electrophysiology; antennae; behaviour; olfaction; Sternorrhyncha; psyllid; Ryggradslösa djurs fysiologi; animal morphology; Animal anatomy; växtparasitologi;

    Sammanfattning : This thesis comprises ecological, morphological and physiological studies of the carrot psyllid Trioza apicalis (Homoptera: Psylloidea) with particular focus on olfaction. Data from inventories of winter habitats suggest that T. apicalis prefer Picea abies over Pinus sylvestris and Juniperus communis as winter hosts. LÄS MER