Evaluation of the growth and health status of selected clone mixtures in comparison with ordinary planting stock
2010
Leugner, J.,Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Opocno (Czech Republic) | Jurasek, A.,Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Opocno (Czech Republic) | Martincova, J.,Vyzkumny Ustav Lesniho Hospodarstvi a Myslivosti, Opocno (Czech Republic)
The present paper compares the growth of parent trees and potentially stress-tolerant mixtures of clones of Norway spruce progenies coming from a specific locality near the Cerna hora peat bog in the Krkonose Mts, Czech Republic. Growth was studied in generative ortet plantations in Trutnov locality and in a mountain ortet plantation Lesni bouda, in the 1st generation clone plantation Benecko and in the 2nd generation clone plantation in the Cernohorska raselina locality. In the latter locality chlorophyll fluorescence and water losses during controlled desiccation were also measured in selected clones and compared with control (generatively propagated) spruces. Partial data acquired until now show good growth dynamics and physiological state of some clones in extreme climatic conditions indicating that cuttings were taken from vital parent trees growing in exposed mountain localities. Growth relations among the clones were identical in all evaluated localities. The growth of the 2nd generation clone plantation has been markedly influenced by plantation and specific site conditions until now.
显示更多 [+] 显示较少 [-]