Serbian spruce - endemicity and advantages

Aleksandra Lj. Mitrović, Jelena Bogdanović Pristov, Jasna Simonović Radosavljević, Lloyd Donaldson, Ksenija Radotić




Conifers, as a response to mechanical stress, such as wind and stem lean, form reaction wood called compression wood (CW). CW occurs in a range of gradations from near normal wood (NW) to severe CW (SCW). As the severity of CW affects the mechanical and chemical properties of wood, and as CW has limited value in the forest products industry, it is desirable to be able to measure CW severity. Picea omorika belong to slow-growing conifer species in which CW typically occurs in a severe form. We developed different morphometric and non-morphometric methods for estimation of CW severity tested on wood samples of P. omorika juvenile trees exposed to long term static bending. This specific review is aimed at presenting P. omorika as one of the most adaptable spruces, and as a good model for testing of methods for estimation of compression wood severity. First, we summarize main knowledge about P. omorika, features of CW, and methods for assessment of wood quality. Then, we present our new methods for estimation of compression wood severity tested on P. omorika juvenile wood samples.


cell wall, cellulose fibrils order, compression wood severity, fluorescence-detected linear dichroism microscopy, Picea omorika (Pančić) Purkynĕ, tracheid double wall thickness

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