Search for dissertations about: "allelochemicals"

Found 3 swedish dissertations containing the word allelochemicals.

  1. 1. Syntheses of Allelochemicals for Insect Control

    University dissertation from Stockholm : Kemi

    Author : Olof Smitt; KTH.; [2002]
    Keywords : isoprenoids; natural product synthesis; allelochemicals; kairomones; allomones; bisabolane terpenoids; Hylobius abietis; germacrane terpenoids; Neodiprion sertifer; stereoselective synthesis;

    Abstract : This thesis describes the synthetic preparation of somecompounds, which can serve as chemical signals for use in thedevelopment of control methods for pest insects. The compoundssynthesised are of the isoprenoid type and of two kinds:carvone derivatives and germacranes. READ MORE

  2. 2. The role of allelopathy in microbial food webs

    University dissertation from Växjö, Kalmar : Linnaeus University Press

    Author : Astrid Weissbach; Linnéuniversitetet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Freshwater ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi Limnisk ekologi; Akvatisk ekologi; Aquatic Ecology; Microbial food web; Allelopathy; Alexandrium tamarense; Prymnesium parvum; Infochemicals; marine plankton community;

    Abstract : Phytoplankton produce allelochemicals; excreted chemical substances that are affecting other microorganisms in their direct environment.In my thesis, I investigated strain specific variability in the expression of allelochemicals of the harmful flagellate Prymnesium parvum, that is euryhaline but mainly bloom forming in brackish water. READ MORE

  3. 3. Purification, Stereoisomeric Analysis and Quantification of Biologically Active Compounds in Extracts from Pine Sawflies, African Butterflies and Orchid Bees

    University dissertation from Sundsvall : Mittuniversitetet

    Author : Joakim Bång; Mittuniversitetet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Semiochemicals; sex pheromone; pine sawflies; Bicyclus; Euglossa; chiral separation; derivatisation; GC-­MS; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Abstract : Stereochemistry plays an important role in nature because biologically important molecules such as amino acids, nucleotides and sugars, only exist in enantiomerically pure forms. Semiochemicals carry messages, between the same species (pheromones) and between different species (allelochemicals). READ MORE