幼よう芽が鞘しょう

noun

coleoptile; acrospire

Botanical term for the protective sheath covering the emerging shoot of a grass seedling. 'Acrospire' is a less common synonym used mainly in malting contexts.

• イネの幼よう芽が鞘しょうは、土つちの中なかから最さい初しょに出でてくる部ぶ分ぶんです。

  The coleoptile of rice is the first part to emerge from the soil.