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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Profile of bordered pit aspiration in Cryptomeria japonica using confocal laser scanning microscopy: pit aspiration and heartwood color

Journal of Wood Science volume 51, pages 328–333 (2005)Cite this article

Abstract

Nine trees of Cryptomeria japonica from six elite tree clones with a broad range of heartwood colors were selected. The profiles of pit aspiration percentage (ASP) of earlywood and latewood from pith to bark for green and air-dry conditions were determined to study the relationship between heartwood color and pit aspiration. Confocal laser scanning microscopy (CLSM) observations showed that the ASP of earlywood was low in sapwood and high in heartwood in the green condition. Pit aspiration increased in intermediate wood when compared with sapwood. On the other hand, latewood pits did not aspirate during heartwood formation. Comparing the air-dry condition with the green condition, sapwood pits aspirated during drying in both earlywood and latewood; however, there was no significant difference in pit aspiration of heartwood. There was no significant difference between samples with red and black heartwoods for ASP. The difference in ASP between individual trees was larger than that by heartwood color. The general advantage of CLSM over light microscopy is that serial optical sections along the Z axis can be obtained for any moisture condition, without the need for thin sectioning or embedding.

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Authors and Affiliations

  1. Laboratory of Wood Science, Department of Forest and Forest Products Sciences, Faculty of Agriculture, Kyushu University, Fukuoka, 812-8581, Japan

    Junji Matsumura, Yoko Yamasaki & Kazuyuki Oda

  2. Kyushu Regional Office, Forest Tree Breeding Center, Kumamoto, 861-1102, Japan

    Yoshitake Fujisawa

Authors
  1. Junji Matsumura
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  2. Yoko Yamasaki
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  3. Kazuyuki Oda
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  4. Yoshitake Fujisawa
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Correspondence to Junji Matsumura.

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Matsumura, J., Yamasaki, Y., Oda, K. et al. Profile of bordered pit aspiration in Cryptomeria japonica using confocal laser scanning microscopy: pit aspiration and heartwood color. J Wood Sci 51, 328–333 (2005). https://doi.org/10.1007/s10086-004-0668-5

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  • DOI: https://doi.org/10.1007/s10086-004-0668-5

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