Sökning: "genotypic variation"

Hittade 5 uppsatser innehållade orden genotypic variation.

  1. 1. Effects of climate on phenology, flowering, and berry production of boreal forest understory plants

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Shakhera Akter Shimu; [2023]
    Nyckelord :Climate change; plant phenology; phenological traits; phenology change; cumulative temperature; phenotypic plasticity; genotypic variation;

    Sammanfattning : Climate is changing faster than it was predicted before and consequently its impact is highly visible on many types of ecosystems globally. Effects of changing climate on forests and the environment are leading to threats for all sorts of ecosystems. LÄS MER

  3. 2. Performance of susceptible and tolerant juvenile Fraxinus excelsior infected by Hymenoscyphus fraxineus, the invasive pathogen causing ash dieback

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Axelina Jonsson; [2017]
    Nyckelord :ash dieback; Fraxinus excelsior; Hymenoscyphus fraxineus; disease tolerance; heritability;

    Sammanfattning : European ash (Fraxinus excelsior), a tree species with both economic and ecological importance, has experienced a steady population decline in Europe since the early 1990’s due to ash dieback, caused by the pathogen Hymenoscyphus fraxineus. In 2001, the first observations of ash dieback were made in Sweden and by 2010, ash had become a red-listed species. LÄS MER

  4. 3. Genotypic variation of Puccinia graminis infecting barberry and grasses

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Forest Mycology and Plant Pathology

    Författare :Karolina Jörgensen; [2016]
    Nyckelord :Puccini graminis; population biology; barberry; Berberis spp.; phylogeny; small sequence repeats;

    Sammanfattning : Stem rust on cereals is a large problem in parts of the world, and it may reduce the yields significantly. It is caused by Puccinia graminis, a heteroecious basidiomycete with 365 known telial host grass species. Puccinia graminis reproduces asexually on the grass host. LÄS MER

  5. 4. Genotypic and phenotypic variation of Phytopthora infestans on potato in the two Swedish regions Bjäre and Östergötland in 2015

    Master-uppsats, SLU/Dept. of Forest Mycology and Plant Pathology

    Författare :Ida Peterson; [2015]
    Nyckelord :potato late blight; mating type; simple sequence repeat markers SSR ; microsatellites; Multiplex PCR; sexual reproduction; asexual reproduction; aggressiveness; tests; population study;

    Sammanfattning : Potato late blight, caused by the oomycete Phytophthora infestans, is a very im-portant disease on potato, and one of the most devastating plant diseases in agri-culture worldwide. Despite the small area of potato in comparison with other cul-tivated crops, 40 % of the total use of fungicides in Sweden is used on potato. LÄS MER

  7. 5. Ash decline in Jönköping and Östergötland conunties : current status and future prospects for Fraxinus excelsior

    Magister-uppsats, SLU/Dept. of Forest Mycology and Plant Pathology

    Författare :Sara Strandberg; [2015]
    Nyckelord :Fraxinus excelsior; Ash decline; invetory; common ash; ash dieback; Hymenoscyphus fraxineus; Ulmus glabra;

    Sammanfattning : Fraxinus excelsior has great ecological, cultural and a somewhat economical importance in Sweden despite its low abundance. The future of common ash is however seriously threatened by the ascomycete fungus Hymenoscyphus fraxineus rapidly spreading across Europe and currently affecting ash throughout Sweden. LÄS MER