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Compression Wood – Anatomical properties

Light microscopy of compression wood in Sitka spruce

Photographs Forest Research

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    Severe compression wood
  • light-microscopy-ss-2.jpg
    Normal latewood
  • light-microscopy-ss-3.jpg
    Normal earlywood

Scanning Electron microscopy of compression wood in Sitka spruce

Photograph courtesy of Centre for Ecology and Hydrology

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Measurement of microfibril angle

Photographs courtesy of University of Florence

microfibril-measurement.jpgEach single portion of the ring(EW and LW) are subjected to stress cycles (wetting and drying).

Microscopic section of 15-18 m in thick are cut and coloured using iodine solution, according to Senft & Bensted method.

25 angles measured for each portion of annual ring.

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Microscopic examination of compression wood in larch

Photograph courtesy of University of Florence

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