Sökning: "stem cuttings"

Hittade 5 avhandlingar innehållade orden stem cuttings.

  1. 1. 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

  3. 2. Auxin dynamics during adventitious root formation in pea (Pisum sativum L.) cuttings

    Författare :Ann-Caroline Nordström; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ärtväxter;

    Sammanfattning : The regulatory function of the auxins indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) inadventitious root formation was studied in cuttings of pea (Pisum sativum L.). These auxins, aswell as the conjugate of IAA with aspartic acid (lAAsp), were identified as naturally occurringconstituents in both seedlings and cuttings. LÄS MER

  4. 3. Clonal propagation of Detarium microcarpum and Khaya senegalensis : a step toward clonal forestry in Burkina Faso

    Författare :Catherine Ky-Dembele; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The slow growth of seedlings and the impact of insect pests are major limitations to the use of indigenous species in plantations in Burkina Faso. Thus, the use of vegetative propagules and resistant clones may enhance the success of plantations. LÄS MER

  5. 4. Light induced destruction of indole-3-acetic and some physiological effects on one of its metabolites, 3-methyleneoxindole

    Författare :Punam Bhatnagar; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Studies conducted on Lemma gibba in sterile nutrition medium with labelled indole-3-acetic acid (IAA-1- 14C), confirmed that IAA is highly photosensitive in aqueous solutions. About 80 % of the IAA was decarboxylated within 24 h of exposure to fluorescent light. LÄS MER

  7. 5. Establishment and early management of Populus species in southern Sweden

    Författare :Rebecka Mc Carthy; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Populus species are among the most productive tree species in Sweden. Interest in growing them has increased during the 21st century due to political goals to increase the share of renewable energy and to increase the proportion of hardwood species in forests. LÄS MER