Sökning: "moderträd"
Hittade 4 uppsatser innehållade ordet moderträd.
1. Skillnader mellan granindivider gällande initieringsfrekvens för somatisk embryogenes
Kandidat-uppsats, SLU/School for Forest ManagementSammanfattning : Gran (Picea abies) har länge varit ett viktigt trädslag för den svenska skogsnäringen. Skogsbruket står inför en oviss framtid och med ett alltmer ostadigt klimat behövs ett genetiskt material som kan klara dessa nya prövningar. LÄS MER
2. Performance of susceptible and tolerant juvenile Fraxinus excelsior infected by Hymenoscyphus fraxineus, the invasive pathogen causing ash dieback
Master-uppsats, SLU/Southern Swedish Forest Research CentreSammanfattning : European ash (Fraxinus excelsior), a tree species with both economic and ecological importance, has experienced a steady population decline in Europe since the early 1990’s due to ash dieback, caused by the pathogen Hymenoscyphus fraxineus. In 2001, the first observations of ash dieback were made in Sweden and by 2010, ash had become a red-listed species. LÄS MER
3. The effects of mother trees and site conditions on the distribution of natural regeneration establishment in a Bornean rainforest disturbed by logging and fire
Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Forest Ecology and ManagementSammanfattning : In the tropics, logging and wild fire can result in degraded secondary forests with lower biodiversity than in the natural forest. One way to limit forest degradation is to rehabilitate the present large areas of secondary forests. LÄS MER
4. Undersökning av självspridning av contortatallen i norra Sverige
Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Forest Ecology and ManagementSammanfattning : Over the past 40 years 600 000 ha of lodgepole pine (Pinus contorta ssp. latifolia (Engelm.) Critchf.) has been planted in Sweden (280 000 ha on SCA's forest land alone which represents about 15% of the company's total forest land area). LÄS MER