Sökning: "Endosperm"
Visar resultat 1 - 5 av 16 avhandlingar innehållade ordet Endosperm.
1. Evolutionary Resolutions of Conflicts with Mates and Offspring
Sammanfattning : In sexual conflicts and conflicts between parents and offspring, natural selection acts in different directions on the two sides. For example, males may be selected to achieve many mates, but female fitness may be maximised by monogamy. In this thesis I study the evolutionary outcome of these situations mainly by theoretical modelling. LÄS MER
2. On the Ecology and Evolution of seed and Bud Dormancy
Sammanfattning : This thesis considers the ecological and evolutionary significance of seed and bud dormancy. First, I present theoretical support to the idea that seed dormancy may evolve as a strategy to reduce sib competition in temporally homogeneous environments. LÄS MER
3. Autophagic programmed cell death in the suspensor and endosperm of Vicia faba : An ultrastructural study
Sammanfattning : Programmed cell death (PCD) is a widely spread phenomenon among multi-cellular organisms. Without the deletion of cells no longer needed, the organism will not be able to develop in a predicted way. LÄS MER
4. Metabolic engineering for production of complex lipids in tobacco (Nicotiana benthamiana) leaves and rice (Oryza sativa) endosperm
Sammanfattning : World chemical and energy supplies for industry are today highly dependent on unsustainable fossil reserves. Vegetable lipids with similar chemical structures to fossil oil could be the ultimate renewable solution to replace fossil oil and provide environmentally friendly feedstocks and energy resources. LÄS MER
5. Signalling mechanisms and epigenetic regulation of seed development in Arabidopsis thaliana
Sammanfattning : In flowering plants, seed development starts with a double fertilisation event, leading to the formation of the embryo and the endosperm. Though only the embryo contributes to the next generation, control of endosperm proliferation, as well as the timing of its cellularisation are crucial for embryo viability. LÄS MER