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Role of the gelatinous layer (G-layer) on the origin of the physical properties of the tension wood of Acer sieboldianum

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Abstract

The tension wood (TW) properties of a 70-year-old specimen of Acer sieboldianum Miq. were analyzed by using the G-fiber model that was proposed in our previous report. The roles of the G-layer on the origins of (1) a high tensile growth stress, (2) a large longitudinal Young’s modulus, and (3) a high longitudinal drying shrinkage in the TW xylem are discussed on the basis of the simulations using the G-fiber model. The results suggest that the G-layer generates a high tensile stress in the longitudinal direction during xylem maturation; the longitudinal Young’s modulus of the green G-layer becomes significantly higher than that of the lignified layer; furthermore, the G-layer tends to shrink extraordinarily more than that of the lignified layer during moisture desorption.

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Correspondence to Hiroyuki Yamamoto.

Additional information

This report follows the previous report “Role of the gelatinous layer on the origin of the physical properties of the tension wood.” J Wood Sci (2004) 50:197–208. Part of this paper was presented at the 49th Annual Meeting of the Japan Wood Research Society, Tokyo, April 1999, and at the 2nd International Conference of the European Society for Wood Mechanics, Stockholm, May 2003

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Yamamoto, H., Abe, K., Arakawa, Y. et al. Role of the gelatinous layer (G-layer) on the origin of the physical properties of the tension wood of Acer sieboldianum. J Wood Sci 51, 222–233 (2005). https://doi.org/10.1007/s10086-004-0639-x

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Key words

  • Cellulose microfibril
  • Gelatinous fiber
  • Growth stress
  • Wood cell wall
  • Reaction wood