Sökning: "ärtväxter"
Hittade 5 avhandlingar innehållade ordet ärtväxter.
1. Auxin dynamics during adventitious root formation in pea (Pisum sativum L.) cuttings
Sammanfattning : The regulatory function of the auxins indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) inadventitious root formation was studied in cuttings of pea (Pisum sativum L.). These auxins, aswell as the conjugate of IAA with aspartic acid (lAAsp), were identified as naturally occurringconstituents in both seedlings and cuttings. LÄS MER
2. Genetic variation and population differentiation in the forest herb Lathyrus vernus (Fabaceae)
Sammanfattning : In the present thesis, I investigated patterns of genetic variation in the forest herb Lathyrus vernus (Fabaceae), using plant material from different-sized populations representing three geographically separated regions: central Europe, southern and central Sweden. My studies included presumably neutral or weakly selected characters (allozymes and leaflet shape) as well as characters that should be under strong directional selection (e. LÄS MER
3. Ecosystems in the Anthropocene: the role of cropland management for carbon and nitrogen cycle processes
Sammanfattning : Through deforestation and conversion of natural ecosystems to croplands and pastures, have humans released vast amounts of carbon (C) dioxide (CO2) into the atmosphere. Roughly one third of the cumulative anthropogenic emissions until today stem from these practices, the remainder being mostly due to fossil fuel combustion. LÄS MER
4. Small biotopes: Landscape and management effects on pollinators
Sammanfattning : The intensification of agriculture during the second half of the twentieth century, has caused sever declines of farmland biodiversity, where loss of semi-natural habitats is one of the major drivers. To halt further loss of habitat and biodiversity, agri-environmental schemes (AES) are used to compensate farmers to use methods less harmful to the environment. LÄS MER
5. Pollinators and Insect Pollination in Changing Agricultural Landscapes
Sammanfattning : Agricultural intensification and associated loss of semi-natural grasslands, has resulted in reduced landscape heterogeneity. A concomitant loss of forage and nest sites for pollinating insects has driven declines across several pollinator taxa. LÄS MER