Central cylinder

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Schematic cross-section through a dicotyledonous plant root with the beginning of secondary growth

The central cylinder is a term from botany . It describes the central part of the root and the stem axis of vascular plants . The primary bark follows outwards . In the root, the pericambium (pericyclic) forms the outermost layer of the central cylinder and delimits it from the endodermis , the innermost cortical layer.

The central cylinder contains vascular bundles (the so-called stele ), the basic tissue ( medulla and medullary rays ) and, if necessary, strengthening tissue ( sclerenchyma ).

literature

  • Sitte, P .; Ziegler, H .; Ehrendorfer, F .; Bresinsky, A .: Strasburger - Textbook of botany for universities . 34th edition, G. Fischer Verlag, Stuttgart / New York 1999. ISBN 3-8274-0779-6
  • Herder-Lexicon of Biology, Spectrum Academ. Verlag, 1994. ISBN 3-86025-156-2

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