单词 | plumula |
释义 | plumulan. Botany. = plumule n. 1. ΘΚΠ the world > plants > part of plant > reproductive part(s) > seed > [noun] > parts of > plumule or rudimentary shoot spirec1374 springa1400 sprout?1548 plume1578 spear1647 germen1651 acrospire1675 sprit1682 mistressa1722 plumula1727 plumule1727 plumelet1783 gemmule1844 stem-bud1877 epicotyl1880 1727 P. Shaw & E. Chambers in tr. H. Boerhaave New Method Chem. ii. 150 (note) We find its cavity fill'd with a young plant in miniature, and can easily distinguish a plumula, or future stem. 1805 Philos. Trans. (Royal Soc.) 95 97 Though no vessels can be traced which lead immediately from the cotyledons to the bud or plumula, it is not difficult to point out a more circuitous passage. 1832 J. Baxter Libr. Agric. & Hort. Knowl. (ed. 2) 37 The plumula begins to grow; and when this has grown to a certain extent within the grain, the further germination is checked by exposing the grain on a kiln. 1899 Bull. Torrey Bot. Club 26 21 Healthy rootlets are protruded, and the freely growing plumula has all the appearances of turgidity and firmness incidental to good nutrition. 1990 Jrnl. Appl. Ecol. 16 192 To determine the percentage germination, seeds were counted and removed when the plumula became visible. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1727 |
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