Sökning: "bud dormancy"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden bud dormancy.

  1. 1. On the Ecology and Evolution of seed and Bud Dormancy

    Författare :Patric Nilsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bet-hedging; overcompensation; herbivory; plant compensatory growth; bud dormancy; endosperm; seed provisioning; Seed dormancy; parent-offspring conflicts; Ecology; Ekologi; Botany; Botanik;

    Sammanfattning : This thesis considers the ecological and evolutionary significance of seed and bud dormancy. First, I present theoretical support to the idea that seed dormancy may evolve as a strategy to reduce sib competition in temporally homogeneous environments. LÄS MER

  3. 2. From growth cessation to bud burst : conifer seedling development in response to nursery culture and environmental stimuli

    Författare :Elisabeth Wallin; Högskolan Dalarna; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Picea abies; Pinus sylvestris; Pseudotsuga menziesii; seedling status; gene activity; photoperiod; storability; vitality; transplants; shoot electrolyte leakage; Picea abies; Pinus sylvestris; Pseudotsuga menziesii; plantstatus; genaktivitet; fotoperiod; lagringsbarhet; vitalitet; omskolningsplantor; elektrolytiskt läckage; Energy and Built Environments; Energi och samhällsbyggnad;

    Sammanfattning : In Sweden, 350-400 million seedlings are produced annually for forest regeneration. About one third of these are overwintered in frozen storage, necessitating accurate methods to assess storability. Young transplants of Norway spruce (Picea abies (L.) Karst. LÄS MER

  4. 3. New insights into growth cessation and dormancy in trees

    Författare :Lars Resman; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Since trees are sessile they have evolved elaborate mechanisms that anticipate oncoming winter and allow the trees to withstand extreme changes in their environment. Trees need to stop growth and initiate cold hardiness well before cold temperatures become damaging, consequently the timings of growth cessation and dormancy are important adaptive traits for their ability to survive in harsh winter conditions. LÄS MER

  5. 4. Molecular analysis of growth cessation and dormancy in hybrid aspen

    Författare :Szymon Tylewicz; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Perennial plants such as trees living in temperate zones experience extreme changes in temperature during summers and winters. In order to survive, shoot apical and cambial meristem undergo a transition from active growth to dormant state, well in advance of winter onset. LÄS MER

  7. 5. ABA and chromatin remodelling regulate the activity-dormancy cycle in hybrid aspen

    Författare :Anna Petterle; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : One of the most important survival strategies plants have evolved is the cessation of growth and development of dormancy in response to the seasonal changes. Apical meristems of deciduous woody plants living in temperate and boreal zones undergo a yearly cycle between an active and a dormant state, which allows them to protect the meristem and avoid damage provoked by extremes of low temperatures during the winter. LÄS MER