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Träd- och virkesegenskaper hos två kloner av mikroförökad masurbjörk

Wallin, Anita; Nylinder, Mats


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 its unique pattern of curly-grained wood. In order to preserve the same pattern in many trees vegetative propagation has to by utilized. Rooting of birch cuttings is more or less impossible. Micro-propagation is a more efficient method than grafting or inoculation. Cloning of curly birch would be a possibility to produce trees with a predetermined structure 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 individuals from the same clone give a similar wood. In 1985 three different curly birches and one non-curly birch were micro-propagated in an examination work supervised by Anita Wallin. Of each clone about 15 micro-propagated 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 micro-propagated 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 industrial trade. There is a great difference in prerequisite for industrial processing of the wood. Clone M1 yields relatively straight and long logs with a homogenous wood structure, compared to M3. Clone M1 would be usable in veneer turnings and veneer cutting as the veneer surface would be uniform all over. Micro-propagation for efficient curly-grained wood production. Cloning of curly birch by micro-propagation is proven to be a reliable method to obtain many individuals with the same stem form and equivalent masur quality

Published in

Rapport - Sveriges lantbruksuniversitet, Institutionen för skogens produkter och marknader
2005, number: 17
Publisher: SPM, SLU

      SLU Authors

    • Nylinder, Mats

      • Department of Forest Products, Swedish University of Agricultural Sciences

    UKÄ Subject classification

    Forest Science

    Permanent link to this page (URI)