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Age-related trends in the growth performance of seedlings and cuttings of Chamaecyparis obtusa.

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Title: Age-related trends in the growth performance of seedlings and cuttings of Chamaecyparis obtusa.
Authors: Matsushita, Michinari1 (AUTHOR) matsushita_michinari660@ffpri.go.jp
Source: Canadian Journal of Forest Research. 2/18/2026, Vol. 56, p1-10. 10p.
Subject Terms: *Tree growth, *Tree height, *Forest management, *Trees, *Seed technology, *Physiology, Tree trunks, Plant growth
Abstract: For the success of forestry practices, it is important to understand the performance of cuttings and seedlings over time to properly understand the advantages and disadvantages of seedling and clonal forestry. In this study, we investigated the tree height, diameter growth, and trunk forms in Chamaecyparis obtusa (Sieb. et Zucc.) Endl. at four plantation stands, and compared the performances of seedlings and cuttings. The seedlings surpassed the cuttings in terms of tree height and diameter growth, while the cuttings exhibited better trunk forms. The superior growth of seedlings diminished when aging; i.e., seedlings grew more than cuttings at younger ages, while the seedlings to cuttings ratio in terms of growth in height and diameter stabilized as trees grew older. This superiority in growth exhibited by the seedlings especially at younger ages suggested that their use is suitable for fast-growing afforestation, while planting cuttings has advantages to produce high-quality logs with straighter trunks in clonal forestry. The present results provide useful basic information for the selection of clonal or seedling forestry practices of Chamaecyparis obtusa, and the need for improving the initial tree growth rates to reduce weeding labor would favor seedling forestry rather than clonal forestry. [ABSTRACT FROM AUTHOR]
Copyright of Canadian Journal of Forest Research is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Items – Name: Title
  Label: Title
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  Data: Age-related trends in the growth performance of seedlings and cuttings of Chamaecyparis obtusa.
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  Data: <searchLink fieldCode="AR" term="%22Matsushita%2C+Michinari%22">Matsushita, Michinari</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> matsushita_michinari660@ffpri.go.jp</i>
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  Data: <searchLink fieldCode="JN" term="%22Canadian+Journal+of+Forest+Research%22">Canadian Journal of Forest Research</searchLink>. 2/18/2026, Vol. 56, p1-10. 10p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Tree+growth%22">Tree growth</searchLink><br />*<searchLink fieldCode="DE" term="%22Tree+height%22">Tree height</searchLink><br />*<searchLink fieldCode="DE" term="%22Forest+management%22">Forest management</searchLink><br />*<searchLink fieldCode="DE" term="%22Trees%22">Trees</searchLink><br />*<searchLink fieldCode="DE" term="%22Seed+technology%22">Seed technology</searchLink><br />*<searchLink fieldCode="DE" term="%22Physiology%22">Physiology</searchLink><br /><searchLink fieldCode="DE" term="%22Tree+trunks%22">Tree trunks</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+growth%22">Plant growth</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: For the success of forestry practices, it is important to understand the performance of cuttings and seedlings over time to properly understand the advantages and disadvantages of seedling and clonal forestry. In this study, we investigated the tree height, diameter growth, and trunk forms in Chamaecyparis obtusa (Sieb. et Zucc.) Endl. at four plantation stands, and compared the performances of seedlings and cuttings. The seedlings surpassed the cuttings in terms of tree height and diameter growth, while the cuttings exhibited better trunk forms. The superior growth of seedlings diminished when aging; i.e., seedlings grew more than cuttings at younger ages, while the seedlings to cuttings ratio in terms of growth in height and diameter stabilized as trees grew older. This superiority in growth exhibited by the seedlings especially at younger ages suggested that their use is suitable for fast-growing afforestation, while planting cuttings has advantages to produce high-quality logs with straighter trunks in clonal forestry. The present results provide useful basic information for the selection of clonal or seedling forestry practices of Chamaecyparis obtusa, and the need for improving the initial tree growth rates to reduce weeding labor would favor seedling forestry rather than clonal forestry. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Canadian Journal of Forest Research is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1139/cjfr-2025-0127
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Tree growth
        Type: general
      – SubjectFull: Tree height
        Type: general
      – SubjectFull: Forest management
        Type: general
      – SubjectFull: Trees
        Type: general
      – SubjectFull: Seed technology
        Type: general
      – SubjectFull: Physiology
        Type: general
      – SubjectFull: Tree trunks
        Type: general
      – SubjectFull: Plant growth
        Type: general
    Titles:
      – TitleFull: Age-related trends in the growth performance of seedlings and cuttings of Chamaecyparis obtusa.
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            NameFull: Matsushita, Michinari
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          Dates:
            – D: 18
              M: 02
              Text: 2/18/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00455067
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              Value: 56
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            – TitleFull: Canadian Journal of Forest Research
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