%0 Research article
%T Tracheid wall thickness and lumen diameter in different axial and radial locations in cultivated Larix sibirica trunks
%A Luostarinen, Katri
%D 2012
%J Silva Fennica
%V 46
%N 5
%R doi:10.14214/sf.921
%U https://silvafennica.fi/article/921
%X In Larix trunks the properties of wood differ clearly radially, but the  axial differences are smaller as well as being less studied. Wood  anatomy is in particular poorly studied, even though all other wood  properties derive from cell and tissue structure. The aim of this study  was to chart variation in tracheid size (double wall thickness (2CWT),  diameter of lumen (RD)) within fast grown cultivated Siberian larch  (Larix sibirica Ledeb.) trunks. The differences in 2CWT and RD were  clear between earlywood (EW) and latewood (LW), 2CWT increasing clearly  less in EW than in LW towards the bark, while RD stayed quite stable in  LW but in EW increased markedly towards the bark. The difference in 2CWT  between EW and LW increased towards the upper trunk. In conclusion, the  radial variation in RD and 2CWT was different between the butt and  other studied heights. As the difference in 2CWT between EW and LW was  smaller at the butt than the upper portion of the trunk, the wood was  the most homogenous at the butt.