单词 | ramet |
释义 | rametn. Chiefly Botany. Originally: an individual member of a clone of plants derived by vegetative reproduction from a single parent plant (ortet) and often (at least initially) remaining physically connected with it. Later also: a member or part of any clonal or modular organism; the basic unit or module of such an organism. Cf. ortet n., genet n.3 ΘΚΠ the world > plants > wild and cultivated plants > [noun] > cultivated or planted > that has been transplanted > from one original stock > individual plant belonging to ramet1929 1929 A. B. Stout in Jrnl. N.Y. Bot. Garden 30 33 It is here suggested that the word ‘ramet’..be used for a member of the clon. 1963 P. H. Davis & V. H. Heywood Princ. Angiosperm Taxon. x. 345 Cloning has obvious advantages in that the vegetative divisions or ramets are genetically identical. 1985 Coral Reefs 4 35 Two botanical terms, genet and ramet, referring to individuals derived from sexual (planula settlement) and asexual (fragmentation of colonies) processes respectively have been introduced to the coral literature. 1995 Canad. Geographic July 11/2 While individual aspen shoots are modest in size and are clearly dwarfed by large conifers, such as western red cedar and sequoia, thousands of aspen shoots (ramets) can originate as suckers from a single parental root system. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1929 |
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