…The absorption of water into the plant body is mainly through the roots, so the degree of root development is of great ecological importance. In gymnosperms and dicotyledons, the taproot is the center and the branch roots that grow from it form the root system, and the structure of the root system is closely related to the habitat of the species. In places with a thick layer of humus and deep groundwater, the taproot often grows long and the branch roots are well developed, but in places where only a thin layer of soil has accumulated on bedrock, the root system tends to be shallow and spread out. … *Some of the terminology that mentions "root system" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…植物体内への水の吸収は主として根から行われるので,根の発達の程度が生態的に重要な意味をもつ。裸子植物や双子葉類では主根を中心にそれから生じる支根が根系root systemをつくるが,根系の構造はその種の生育場所と深い関係がある。腐植土が厚く堆積し,地下水が深いところでは主根が長く伸び,支根がよく発達することが多いが,岩盤の上に土壌層が薄く堆積しただけのところでは,根系は浅く広がる傾向がある。… ※「root system」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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