| 单词 | cytokinin |
| 释义 | cytokinin[ sahy-tuh-kahy-nin ] / ˌsaɪ təˈkaɪ nɪn / noun Biochemistry.any of a class of plant hormones, produced by the roots and traveling upward through the xylem, that promote tissue growth and budding and, on application, retard plant senescence. Compare kinetin, zeatin. Origin of cytokininFirst recorded in 1960–65; cyto- + -kinin Words nearby cytokinincytoglucopenia, cytoid, cytokine, cytokinesis, cytokine storm, cytokinin, cytol., cytologic smear, cytologist, cytology, cytolysin Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for cytokinincytokinin / (ˌsaɪtəʊˈkaɪnɪn) / nounany of a group of plant hormones that promote cell division and retard ageing in plantsAlso called: kinin Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for cytokinincytokinin [ sī′tə-kī′nĭn ] Any of a class of plant hormones that promote cell division and growth and delay the senescence of leaves. Cytokinins are synthesized mainly in root tips. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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