英语单词

词典成语诗词造句字典单词小说古文名言

cotyledon

英 [,kɒtɪ'liːd(ə)n] 美 [,kɑtl'idən]

n. [植] 子叶

英文词源

cotyledon (n.): from 1540s, in various sense, from Latin cotyledon "pennywort, navelwort," from Greek kotyledon "cup-shaped cavity," from kotyle "hollow thing, small vessel," also the name of a small liquid measure (nearly a half-pint); which is of uncertain origin. Botanical sense is 1776, from Linnaeus (1751).

双语例句

1. Fructification includes peel, seed coat, cotyledon and embryo 4 parts.: 果实包括果皮.种皮.子叶和胚四部分.

2. Its cotyledon node zone is telome elongation type.: 结果表明:向日葵幼苗的子叶节区类型为顶枝伸长型.

3. Among cotyledon , petiole of cotyledon, hypocotyl, and radicle, hypocotyl has the most responsive explants to 2, 4 - D .: 在子叶、叶柄、胚轴以及胚根四者当中, 下胚轴对2, 4-D 的反应状况最好.

4. High Effective System Establishment of Regeneration in Vitro from Cotyledon Nodes of Cucumis melo L.: 与甜瓜子叶节培养高效再生体系建立>>相似的文献.

5. Research on the Callus Culture Induction and the Secondary Culture from Cotyledon of Cuminum cyminum L.: 与孜然芹子叶愈伤组织诱导及继代培养研究>>相似的文献.