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<p>To explore the high-value utilization potential of bamboo rhizomes—typically discarded as forest residues—and to enrich the raw material base for bamboo-based plastic alternatives, this study systematically characterizes the micro-morphological features of <i>Phyllostachys sulphurea</i> rhizome (Golden-bamboo rhizome, G-rhizome) as a representative species, providing an in-depth understanding of its anatomical architecture and structural heterogeneity. Light microscopy, scanning electron microscopy, and computer-vision analysis were combined to map vascular bundles, fibers, parenchyma cells, and vessel elements in situ, followed by quantitative measurements of their dimensions and volumetric fractions. The results revealed that the overall anatomical configuration of G-rhizome closely resembles that of <i>Phyllostachys edulis</i> culm (Moso-bamboo culm, M-culm). However, the G-rhizome contained a markedly higher proportion of fibrous tissue (up to 48.57%). The fibers and parenchyma cells were smaller in size, while the vessel distribution exhibited a consistent radial gradient with vessel diameters averaging 127.93 μm—slightly smaller than those in M-culm. Moreover, the fibers in G-rhizome showed short length and low aspect ratio. These anatomical traits indicate that while the rhizome may not match the culm in structural reinforcement performance, it holds strong promise for conversion into biodegradable composites such as disposable tableware, flexible packaging, transparent films, and 3D-printing feedstocks, thereby expanding the resource base for bamboo-for-plastic initiatives.</p>

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Qualitative and quantitative study of the anatomical characteristics of Phyllostachys edulis rhizome

  • 期刊论文

  • 发表日期：

    2025年11月15日

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  • Na Su,
  • Yihua Li,
  • Qingqing Yan,
  • Mengqi Zhu,
  • Hua Wang,
  • Caiping Lian,
  • Wenyu Su,
  • Haocheng Xu

摘要

To explore the high-value utilization potential of bamboo rhizomes—typically discarded as forest residues—and to enrich the raw material base for bamboo-based plastic alternatives, this study systematically characterizes the micro-morphological features of Phyllostachys sulphurea rhizome (Golden-bamboo rhizome, G-rhizome) as a representative species, providing an in-depth understanding of its anatomical architecture and structural heterogeneity. Light microscopy, scanning electron microscopy, and computer-vision analysis were combined to map vascular bundles, fibers, parenchyma cells, and vessel elements in situ, followed by quantitative measurements of their dimensions and volumetric fractions. The results revealed that the overall anatomical configuration of G-rhizome closely resembles that of Phyllostachys edulis culm (Moso-bamboo culm, M-culm). However, the G-rhizome contained a markedly higher proportion of fibrous tissue (up to 48.57%). The fibers and parenchyma cells were smaller in size, while the vessel distribution exhibited a consistent radial gradient with vessel diameters averaging 127.93 μm—slightly smaller than those in M-culm. Moreover, the fibers in G-rhizome showed short length and low aspect ratio. These anatomical traits indicate that while the rhizome may not match the culm in structural reinforcement performance, it holds strong promise for conversion into biodegradable composites such as disposable tableware, flexible packaging, transparent films, and 3D-printing feedstocks, thereby expanding the resource base for bamboo-for-plastic initiatives.