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<p>The content of wood chemical components (extractives, ash, Klason lignin, and polysaccharides) and Kraft-pulp properties (yield and kappa number) were directly determined for the inner and outer heartwood of 10-year-old 20 open-pollinated families in the third-generation <i>Acacia mangium</i> in Indonesia. The results show that the extractives, Klason lignin, and <i>α</i>-cellulose contents of outer heartwood were higher than those of inner heartwood. Relatively higher variance components of family were observed for polysaccharides and Kraft-pulp yield. Significant positive phenotypic correlations were found between stem diameter and either basic density or <i>α</i>-cellulose content, as well as between Kraft-pulp yield and <i>α</i>-cellulose content. Meanwhile, significant negative correlations were found between Kraft-pulp yield and organic solvent extracts or Klason lignin. Therefore, it is concluded that families with larger stem diameters and higher <i>α</i>-cellulose contents tend to produce higher pulp yield.</p>

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Among-family variations of chemical and Kraft-pulp properties in the heartwood of the third-generation Acacia mangium in Indonesia

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月5日

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  • Masendra,
  • Ikumi Nezu,
  • Fanny Hidayati,
  • Arif Nirsatmanto,
  • Sri Sunarti,
  • Surip,
  • Dwi Kartikaningtyas,
  • Jyunichi Ohshima,
  • Shinso Yokota,
  • Futoshi Ishiguri

摘要

The content of wood chemical components (extractives, ash, Klason lignin, and polysaccharides) and Kraft-pulp properties (yield and kappa number) were directly determined for the inner and outer heartwood of 10-year-old 20 open-pollinated families in the third-generation Acacia mangium in Indonesia. The results show that the extractives, Klason lignin, and α-cellulose contents of outer heartwood were higher than those of inner heartwood. Relatively higher variance components of family were observed for polysaccharides and Kraft-pulp yield. Significant positive phenotypic correlations were found between stem diameter and either basic density or α-cellulose content, as well as between Kraft-pulp yield and α-cellulose content. Meanwhile, significant negative correlations were found between Kraft-pulp yield and organic solvent extracts or Klason lignin. Therefore, it is concluded that families with larger stem diameters and higher α-cellulose contents tend to produce higher pulp yield.