The cell wall chemistry (amount of hemicellulose, α-cellulose, and total lignin) and the concentration of extractives (total acetone-soluble extractives, resin acids, pinosylvins and the total phenolics quantified as tannin acid equivalents) were studied in brown-rot resistant and susceptible juvenile heartwood of Scots pine (Pinus sylvestris L.). The study material consisted of a total of 18 trees from two 34-year-old progeny trials at Korpilahti and Kerimäki. The trees were selected from among 783 trees whose decay rate had previously been screened in a laboratory test using a brown-rot fungus, Coniophora puteana. Samples from neither location showed any significant difference in the concentration (mg/cm3) of hemicellulose, α-cellulose and total lignin between the decay resistant and susceptible trees. At both locations only the concentration of total phenolics was higher in the decay-resistant heartwood than in the decay-susceptible heartwood. At Korpilahti, the amount of acetone-soluble extractives and the concentration of pinosylvin and its derivatives were higher in the resistant than in the susceptible trees.
- Pinus sylvestris L.
- Coniophora puteana
- Heartwood durability
- Cell wall sonstituents
Harju, A., Venäläinen, M., Anttonen, S., Viitanen, H., Kainulainen, P., Saranpää, P., & Vapaavuori, E. (2003). Chemical factors affecting the brown-rot decay resistance of Scots pine heartwood. Trees, 17(3), 263-268. https://doi.org/10.1007/s00468-002-0233-z