Träd- och virkesegenskaper hos två kloner av mikroförökad masurbjörk
2005 (Swedish)Report (Other scientific)
The curly birch (Betula pendula var. carelica) has a wood that deviates from the non-curly form of birch. The curly birch has wavy lines or grains in the wood.
The masur formation is genetically controlled by sexual crossing or can eventually be formed by new formations of curly birches. Each individual has a unique pattern of curly-grained wood. In order to preserv the same pattern in many trees vegetative propagation has to be utilized. Rooting of birch cuttings is more or less impossible. Micropropagation is a more efficient method than grafting or inoculation.
Cloning of curly birch would be a possibility to produce trees with a predetermined stucture of the wood and in large quantities. In the light of these facts one need a model to characterize the wood and to make sure that the individuals from the same clone give a similar wood.
In 1985 three different curly birches and one non-curly birch were micropropagated in an examination work supervised by Anita Wallin. Of each clone about 15 micropropagated plants were planted and fenced.
The aim of this study was to classify the curly-grained wood and to compare the wood from 5 trees in two different micropropagated curly birches.
Wood characteristics. The difference is great between the wood structure of the cross-section of fully developed masur rose in the two clones. The disturbances of the wood are more extensive in M3 and the angle somewhat more acute in M3 than in M1.
The utility of the clones in industríal trade. There is a great difference in prerequisite for industrial processing of the wood. Clone M1 yields relatively straight and long logs with homogenous wood structure, compared to M3. Clone M1 would be usable in veneer turnings and veneer cuttings as the veneer surface would be uniform all over.
Micropropagation foir efficient curly-grained wood producation. Cloning of curly birch by micropropagation is proven to be a reliable method to obtain many individuals with the same stem form and equivalent masur quality.
Place, publisher, year, edition, pages
The Swedish University of Agricultural Science, Dept. of Forest Products and Markets, Uppsala , 2005. , 1-39 p.
, Publikationer från Institutionen för skogens produkter och marknader, Sveriges lantbruksuniversitet, ISSN 1651-0704 ; 17
masur, mikrförökning, vedanalys
IdentifiersURN: urn:nbn:se:uu:diva-75908ISBN: 1651-0704OAI: oai:DiVA.org:uu-75908DiVA: diva2:103819