Sökning: "gymnosperms"

Hittade 4 uppsatser innehållade ordet gymnosperms.

  1. 1. Global Warming Induced by Oceanic Anoxic Event 1a Had a Pronounced Impact on the Early Cretaceous Terrestrial Vegetation of Southern Sweden

    Master-uppsats, Uppsala universitet/Paleobiologi

    Författare :Marcos Amores; [2022]
    Nyckelord :palynology; spore-pollen; biostratigraphy; oceanic anoxic event 1a; high-latitude; Early Cretaceous;

    Sammanfattning : The Mesozoic is punctuated by several rapid global warming events that are marked by the worldwide deposition of organic-rich marine sediments. These events, known as oceanic anoxic events (OAEs), are characterised by intervals where the worldwide carbon cycle suffers a disruption due to major palaeoceanographic and climatic shifts, leading to anoxic marine environments and the creation of black shales. LÄS MER

  3. 2. Identifying Mitochondrial Genomes in Draft Whole-Genome Shotgun Assemblies of Six Gymnosperm Species

    Kandidat-uppsats, Stockholms universitet/Matematiska institutionen

    Författare :Yrin Eldfjell; [2018]
    Nyckelord :machine-learning classification genome plant mitochondria svm contigs gymnosperm;

    Sammanfattning : Sequencing efforts for gymnosperm genomes typically focus on nuclear and chloroplast DNA, with only three complete mitochondrial genomes published as of 2017. The availability of additional mitochondrial genomes would aid biological and evolutionary understanding of gymnosperms. Identifying mtDNA from existing whole genome sequencing (WGS) data (i. LÄS MER

  4. 3. The effects of trinexapac-ethyl on Pinus sylvestris and Picea abies

    Kandidat-uppsats, SLU/Department of Plant Biology (from 140101)

    Författare :Emil Bengtsson; [2018]
    Nyckelord :GA; gibberellin; Norway spruce; PGR; phytohormone; Picea abies; Pinus sylvestris; plant growth regulator; Scots pine; trinexapac-ethyl;

    Sammanfattning : The use of so-called micro-plant propagation have become a well-adapted cultivation technique in Swedish forestry nurseries. Although this production method has many advantages, a commonly occurring problem is that the young plants, after trans- plantation in the nursery, have an underdeveloped root system when the shoot part have reached desired length. LÄS MER

  5. 4. Sedimentology and palynofacies analysis of Jurassic rocks Eriksdal, Skåne, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Muhammad Saeed; [2013]
    Nyckelord :Fuglunda member; Jurassic; pollen; spores; palynomorph; gymnosperms; Earth and Environmental Sciences;

    Sammanfattning : A sedimentlogical and palynological study of samples from the Middle Jurassic Fuglunda Member, Mariedal Formation at Eriksdal, Skåne, Sweden, has been carried out. The section is dominated by sandstone with minor units of coal, claystone, siltstone and conglomerate. LÄS MER