| 释义 |
gibberellin|dʒɪbəˈrɛlɪn|
[f. mod.L. Gibberell-a (generic name of the fungus G. fujikuroi, from cultures of which gibberellin was first isolated), dim. of the generic name Gibbera, f. L. gibber hump: see -in1.]
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.
1939Yabuta & Hayashi in Jrnl. Agric. Chem. Soc. Japan (Eng. Abstr.) Mar. 41 (heading) Isolation of ‘gibberellin’, the active principle which makes the rice seedlings grow slenderly. 1958Science News XLVII. 9 Plants treated with a few micrograms of gibberellin became much longer. 1961Q. Rev. XV. 59 The gibberellins are used to stimulate swelling of fruits, e.g., grapes and tomato. 1965Bell & 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. 1968New Scientist 21 Mar. 651/1 Some 23 gibberellins, each with a slightly different physiological action and chemical structure, have so far been recognized. |