Sökning: "Picea glauca"
Hittade 5 avhandlingar innehållade orden Picea glauca.
1. Composition of lignin in outer cell-wall layers
Sammanfattning : The composition of lignin in the outer cell-wall layers of spruce and poplar has been studied and the data obtained have been compared with those of the mature reference wood in which the secondary cell wall predominates. Materials with exclusively or predominantly outer cell-wall layers were examined. LÄS MER
2. Conifer Evolution, from Demography and Local Adaptation to Evolutionary Rates : Examples from the Picea genus
Sammanfattning : Evolutionary process can be inferred at three different levels: the species level, the population level and the molecular level. In this thesis, I applied approaches at these three levels and aimed to get a comprehensive picture of conifer evolution, from speciation and demography to geographic variation and local adaptation, and then to the molecular evolution of proteins and small regulatory RNAs. LÄS MER
3. Neutral and Adaptive Processes Shaping Genetic Variation in Spruce Species
Sammanfattning : Population genetic analyses can provide information about both neutral and selective evolutionary processes shaping genetic variation. In this thesis, extensive population genetic methods were used to make inferences about genetic drift and selection in spruce species. LÄS MER
4. Adaptive Evolution and Demographic History of Norway Spruce (Picea Abies)
Sammanfattning : One of the major challenges in evolutionary biology is to determine the genetic basis of adaptive variation. In Norway spruce (Picea abies) the timing of bud set shows a very strong latitudinal cline despite a very low genetic differentiation between populations. LÄS MER
5. Genetics of disease resistance in Norway spruce (Picea abies) : a look in the past with an eye to the future
Sammanfattning : Trees have evolved strategies to fight enemies and survive during their million-year history. These strategies have been shaped by natural selection and are reflected in their genomes today. Tree planting is a priority for governments, but there is a risk that trees selected by humans will lack alleles important for disease resistance. LÄS MER