Sökning: "Conifers"

Visar resultat 1 - 5 av 45 avhandlingar innehållade ordet Conifers.

  1. 1. Ethylene in conifers : involvement in wood formation and stress

    Författare :Barbro S. M. Ingemarsson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Barrväxter; Coniferae; Växtfysiologi;

    Sammanfattning : .... LÄS MER

  3. 2. Chemodiversity and Functions of Monoterpene Hydrocarbons in Conifers

    Författare :Monika Persson; KTH; []
    Nyckelord :Conifers; Picea abies; Pinus sylvestris; Pinus yunnanensis; Pinus armandii; monoterpenes; enantiomeric composition; correlations; chemotaxonomy; two-dimensional gas chromatography; induced stress; Tomicus piniperda; Leptographium wingfieldii;

    Sammanfattning : .... LÄS MER

  4. 3. Characterization of adventitious root formation in Populus species and Norway spruce

    Författare :Sanaria Alallaq; Catherine Bellini; Carmen Diaz-Sala; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Adventitious root; Conifers; Picea abies; auxin; cytokinins; jasmonate; red light; Populus spp.; hybrid poplar; hybrid aspen; cambium; stem cuttings; P. tremula; Swedish Aspen SwAsp collection;

    Sammanfattning : Adventitious root (AR) formation is a form of post-embryonic development and is a key adaptive trait in plants. De novo adventitious root regeneration represents an elegant evolutionary innovation that allows many plant species to multiply through vegetative propagation; it is widely used in forestry and horticulture to multiply elite genotypes. LÄS MER

  5. 4. Volatiles of Conifer Seedlings : Compositions and Resistance Markers

    Författare :Astrid Kännaste; Anna-Karin Borg-Karlson; Anders Backlund; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Conifers; Norway spruce; Scots pine; Nalepella; Oligonychus ununguis; green leaf volatiles; terpenes; aromatics; benzenoids; SPME; induced defense reaction; Organic chemistry; Organisk kemi;

    Sammanfattning : Pine weevils cause major damage to newly planted conifer seedlings in reforestation areas. However, recent findings indicate that small (“mini”) seedlings, planted at the age of 7-10 weeks, are gnawed less by pine weevils than the larger, conventionally planted seedlings. LÄS MER

  7. 5. Nutrient imbalance in Norway spruce

    Författare :Gunnar Thelin; Avdelningen för kemiteknik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silviculture; Växtekologi; Plant ecology; nitrogen saturation; base saturation; pH; multiple limitation; deficiency; copper; boron; potassium; pollution; sustainability; conifers; forestry; forestry technology; Skogsvetenskap; skogsbruk; skogsteknik; Soil Science; agricultural hydrology; Lantbrukshydrologi; marklära;

    Sammanfattning : The studies presented in my thesis indicate that growing Norway spruce in monoculture does not constitute sustainable forest management in a high N and S deposition environment, such as in southern Sweden. The combination of N-induced high growth rates and leaching due to soil acidification causes soil reserves of nutrients to decrease. LÄS MER