Sökning: "dormancy"
Visar resultat 1 - 5 av 58 avhandlingar innehållade ordet dormancy.
1. Seed dormancy and germination in an ecological context : comparative studies of annual weeds
Sammanfattning : Germination ecology studies, i.e. studies of interactions between characteristics of the seeds and environmental circumstances, provide understanding of spatial and temporal patterns of emergence of wild species, as weeds in the field. A large number of species have seed dormancy, i. 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. Functional analyses of growth and development in the liverwort Marchantia polymorpha
Sammanfattning : Land plants developed from a freshwater charophycean algae about 500 million years ago. Today, they consist of two main clades, the vascular plants and the non-vascular bryophytes including hornworts, liverworts and mosses. LÄS MER
4. Selection during Early Life Stages and Local Adaptation in Arabidopsis thaliana
Sammanfattning : Organisms are often adapted to their local environment, but the role of early life stages in adaptive differentiation among populations remains poorly known. The aim of my thesis was to investigate the contribution of early life stages to the magnitude and genetic basis of local adaptation, and to identify the underlying adaptive traits. LÄS MER
5. Strategy games; on survival and reproduction
Sammanfattning : Classical evolutionary life history concerns questions such as optimal timing of maturation, life span and number of offspring. These questions have mostly been studied theoretically under the assumption that the environment is stable and without taking into account frequency and density dependence. LÄS MER