…This classification can be generally used across plant groups and organs. On the other hand, PEL van Tieghem defined the vascular bundle as a central pillar inside the epidermis and cortex. This classification is convenient when considering phylogeny. … From [Stem] ...Looking at the external shape of a stem, there is a distinction between the apex, which is located at the end of the stem and is the site of active growth and differentiation, the nodes, which are the parts of the stem where leaves grow, and the internodes, which are the stems between the nodes. From [Central Pillar]…the system of conductive tissues that runs through the stems and roots of vascular plants (ferns, gymnosperms, and angiosperms) and serves as the pathway for water and nutrients and mechanical support for the plant. The stele is a tissue system first recognized by Van Tieghem (1886) and contains the vascular bundles and the pith that are surrounded by them. The vascular bundles are made up of xylem and phloem, and the pith is made up of parenchyma tissue, like the cortex on the outside of the stele. … *Some of the terminology that mentions "van Tieghem, PEL" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この分け方は植物群や器官の違いをこえて一般的に利用できる。一方ファン・ティガンP.E.L.van Tieghemは維管束を表皮・皮層の内側にある中心柱として定義した。この分け方は系統を考えるときには都合がよい。… 【茎】より…茎の外部形態をみると,茎の先端にあって生長・分化の盛んな茎頂,葉がつく部位である節,節と節の間の茎つまり節間などが区別される。 【中心柱】より…維管束植物(シダ植物,裸子植物,被子植物)の茎,根を貫く通道組織系で水分や養分の通道と植物体の機械的支持のはたらきをする。中心柱はファン・ティーゲンVan Tieghemが最初に認めた組織系(1886)であって維管束とそれによって囲まれた髄を含む。維管束は木部と師部から,髄は中心柱の外側の皮層と同じく柔組織からなる。… ※「van Tieghem,P.E.L.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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