…In gymnosperms and dicotyledons, the radicle grows to become the taproot, but in monocotyledons, the radicle does not grow significantly, and adventitious roots develop to form fibrous roots. In this way, roots that grow from stems and other parts of the plant, other than the roots that form in the embryo (radicles), are collectively called adventitious roots. Stems usually have the ability to form adventitious roots, and it is known that growth-promoting substances, especially auxin, have the property of causing new adventitious roots to form (Figure 1). … *Some of the terminology explanations that mention "radicle" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…裸子植物や双子葉類では幼根が伸長して主根となるが,単子葉類では幼根は顕著に伸長せず,不定根が発達してひげ根をつくる。このように,胚に形成される根(幼根radicle)以外で,茎などから分出してくる根を不定根と総称する。茎には通常不定根をつくる能力があり,生長促進物質,とくにオーキシンには不定根を新生させる性質があることが知られている(図1)。… ※「radicle」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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