单词 | gibberellin |
释义 | gibberellinn. Any of numerous compounds which are chemically related to gibberellic acid and which are present in many higher plants as growth regulators; their characteristic effects include elongation of the stem and other parts of the plant and the promotion of germination and flowering. ΘΚΠ the world > matter > chemistry > organic chemistry > organic acids > [noun] > tetracyclic lactonic acids > gibberellic acid > any of the compounds related to gibberellin1939 1939 T. Yabuta & T. Hayashi in Bull. Agric. Chem. Soc. Japan 15 41 (heading) Isolation of ‘gibberellin’, the active principle which makes the rice seedlings grow slenderly. 1958 Sci. News 47 9 Plants treated with a few micrograms of gibberellin became much longer. 1961 Q. Rev. Chem. Soc. 15 59 The gibberellins are used to stimulate swelling of fruits, e.g., grapes and tomato. 1965 P. Bell & D. Coombe tr. Strasburger's Textbk. Bot. (new ed.) iii. 498 Gibberella fujikuroi, which causes a disease of rice in Japan, yields the growth substance gibberellin, now much used in plant physiological researches. 1968 New Scientist 21 Mar. 651/1 Some 23 gibberellins, each with a slightly different physiological action and chemical structure, have so far been recognized. This entry has not yet been fully updated (first published 1972; most recently modified version published online September 2020). < n.1939 |
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