Search for dissertations about: "poaceae"

Showing result 1 - 5 of 11 swedish dissertations containing the word poaceae.

  2. 1. Thriving in extremes : Local adaptation of grasses (Poaceae) to geothermally heated soils on a subarctic island

    Author : Jan-Niklas Nuppenau; Aelys M. Humphreys; Catarina Rydin; Johan Ehrlén; Alessandro Chiarucci; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; abiotic stress; Agrostis; cold; colonization history; common garden; extreme environments; Festuca; frost; ice encasement; Iceland; heat; overwintering; phenology; plastome; snown; thermal tolerance; Plant Systematics; växtsystematik;

    Abstract : Temperature is one of the most decisive parameters when it comes to determining characteristics and distributions of life worldwide. For plants, as sessile organisms, it is particularly important to be able to deal with the temperatures they are exposed to at a given location. READ MORE

  4. 2. Sample preparation and analysis of metabolites from plants in the families of Cyperaceae, Poaceae and Apiaceae

    Author : Linus Svenberg; Åsa Emmer; Jenny Lindh; Margareta Sandahl; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Gas chromatography; Mass spectrometry; Ultrasound assisted extraction; Solid-phase microextraction; Volatile compounds; Allelopathy; Bioassay; Gaskromatografi; Masspektrometri; Ultraljudsassisterad extraktion; fastfas-mikroextraktion; Flyktiga ämnen; Allelopati; Bioanalys; Kemi; Chemistry;

    Abstract : An important aspect of understanding how plants effect their environmentis the study of volatile compounds and how these influence interactions between plants and other living organisms. The study of these secondary metabolites from plants can be used in practical applications, such as behaviour control of insects, and is an important part in the search for novel compounds that can be used to influence the behaviour of disease spreading vectors. READ MORE

  5. 3. Phylogenetic studies of Elymus s.s. L. (Poaceae) : plant systematics as a prerequisite for efficient conservation and utilization

    Author : Jonatan Leo; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Elymus (wild-rye), in the tribe Triticeae, is a diverse genus and contains about 150 species growing in a wide range of habitats in temperate areas all over the world. The species are wild relatives to some of the most important cereal crops like bread wheat, durum wheat, rye, and barley. READ MORE

  6. 4. Genetic Analysis of Cytosolic PGI in Festuca ovina

    Author : Lena Ghatnekar; MEMEG; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Växtgenetik; Plant genetics; pseudogenes; grasses; cytosolic PGI; introgression; duplication; Festuca ovina;

    Abstract : Festuca ovina, sheep's fescue is a widely distributed perennial outbreeder that belongs to the grass family Poaceae and is very common in the northern temperate zone. The genus Festuca s.l. is partitioned into fine-leaved fescues to which F. READ MORE

  7. 5. Present and Past Coastal Dune Environments of South Buenos Aires Province, Argentina

    Author : Sonia L. Fontana; Keith D. Bennett; Sara C. Ballent; Marie-José Gaillard; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quaternary geology; pollen; ostracods; dune vegetation; Holocene; Buenos Aires Province; Argentina; Kvartärgeologi; Quaternary geology; Kvartärgeologi;

    Abstract : The aim of this thesis is to describe present and past coastal dune environments in southern Buenos Aires Province, Argentina. The present vegetation of a dune system and its zonation are described on the basis of air photographs, physiognomy of the dune system and floristic composition. READ MORE