Search for dissertations about: "Nicotiana alata"

Found 2 swedish dissertations containing the words Nicotiana alata.

  2. 1. Environmental effects on pollen performance:potential consequences on gene flow

    Author : Margaret Mollel; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plant ecology; siring ability; risk assessment; pollen germination; pollen tube growth rate; Nicotiana alata; morphological markers; Cucumis sativus; Genetically modified crops hybridisation; Växtekologi;

    Abstract : This thesis illustrates the effects of environmental factors on pollen performance and its importance on gene flow. Pollen competitive ability between the wild and cultivated species of four genera belonging to Cucurbitaceae family was compared to evaluate the evolutionary potential for selection on pollen tube growth rate. READ MORE

  4. 2. Effects of Environmental Factors on maternal Choice and Gene Dispersal in Plants

    Author : Teklehaimanot Haileselassie; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; siring ability; Maternal effect; genetically modified crops; risk assessment; morphological markers; herbivory; Cucumis sativus; Växtekologi; pollen tube growth rate; Plant ecology; Nicotiana alata;

    Abstract : Gene dispersal through pollen is affected by both abiotic and biotic environmental factors. In this study, I mainly investigated the effect of environmental factors: nutrient availability, simulated herbivory and floral morphology (flower colour), on the siring success of competing pollen donors and fitness of the resulting offspring. READ MORE