Search for dissertations about: "Agricultural mechanisms"

Showing result 1 - 5 of 180 swedish dissertations containing the words Agricultural mechanisms.

  2. 1. Gene silencing mechanisms in Phytophthora infestans

    Author : Vetukuri Ramesh; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The hemibiotrophic oomycete, Phytophthora infestans, causes late blight on potato and tomato. This destructive pathogen is well known for the rapidity with which it overcomes host resistance. This thesis focuses on the molecular basis of gene (RNA) silencing in P. infestans and the role it may have in its genome biology and pathogenesis. READ MORE

  4. 2. Behavioural mechanisms behind aggregation in a tritrophic perspective

    Author : Jörg Stephan; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Gregarious organisms need to handle the trade-off between positive effects of group living and increasing food competition. The gregarious Phratora vulgatissima, a specialist leaf beetle on willow in Europe and Asia, frequently reaches outbreak densities in natural stands and short rotation coppices. READ MORE

  5. 3. Bio-based materials from crambe and carinata industrial oilseed meals : compression moulded and extruded oilseed meal plastics

    Author : William Newson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Protein-based plastics are considered as a new route for valorisation of oilseed meal from the industrial oil crops Crambe abyssinia (crambe) and Brassica carinata (carinata) as they cannot be used for animal feed or human food. To convert oilseed meals into protein-based plastic films compression moulding was used with varying processing temperature, chemical additives and protein extraction conditions. READ MORE

  6. 4. Molecular genetics and mechanisms of pigmentation and melanoma

    Author : Elisabeth Sundström; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Ever since man domesticated the first wild animals several thousand years ago, many species have been living in close relationship with humans, being objects for our requests and wishes about any kind of phenotypic traits. As a result, we have by selective breeding created a fascinating spectrum of phenotypes within most species we have domesticated. READ MORE

  7. 5. Food webs in agroecosystems : implications for biological control of insect pests

    Author : Eve Roubinet; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The management of insect pests in modern agriculture is dominated by chemical control, despite wide recognition of its detrimental impact on the environment and human health. As a sustainable alternative, the service of biological control of insect pests is provided by a diversity of natural enemies, such as ground dwelling carabids and spiders. READ MORE