... In the 19th century, knowledge increased in various fields of biology, and the nature of species differences, which had previously been identified only by morphology, began to be questioned. At the end of the 19th century, A. Jordan cultivated Lycium purpurea and examined its variations, revealing that more than 200 types could be isolated from a single Linnaean species. Jordan considered these types to be the basic units of biological classification, and later J.D. Lotsy came to call them Jordan species. ... *Some of the terminology explanations that mention "Jordan, A." are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 19世紀に入ってからは,生物学の各分野で知見が増え,形態だけで識別されていた種差の本質がなんであるかが問題にされるようになった。19世紀末になって,ジョルダンA.Jordanはヒメナズナを栽培して変異を調べ,ただ一つのリンネ種から200以上ものタイプが分離されてくることを明らかにした。ジョルダンはこのタイプこそ生物分類の基礎単位であると考え,後にこれはロッツィJ.D.Lotsyによってジョルダン種と呼ばれるようになった。… ※「Jordan,A.」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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