期刊
TREES-STRUCTURE AND FUNCTION
卷 17, 期 3, 页码 263-268出版社
SPRINGER-VERLAG
DOI: 10.1007/s00468-002-0233-z
关键词
Pinus sylvestris L.; Coniophora puteana; heartwood durability; cell wall constituents; extractives
类别
The cell wall chemistry (amount of hemicellulose, alpha-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 Kerimaki. 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/cm(3)) of hemicellulose, alpha-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.
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