单词 | diaphototropic |
释义 | diaphototropic, a. Bot.|ˌdaɪəfəʊtəʊˈtrɒpɪk, -ˈtrəʊpɪk| [f. dia-1 + phototropic a.] Of a plant, leaf, etc.: turning at right angles to incident light. So ˌdiaphoˈtotropism. Cf. diaheliotropic a., -ism.
1901D. T. MacDougal Pract. Text-bk. Plant Physiol. viii. 127 Leaves..place their surfaces at right angles to the direction of the rays in response to their diaphototropism. Ibid. 138 The leaves of Taraxacum are diaphototropic, apogeotropic, and epinastic. 1929J. C. Bose Growth & Tropic Movem. Plants xiii. 133 (title) Dia-phototropism and negative phototropism. Ibid., The seedling..assumed a diaphototropic position under intense and long-continued action of light. |

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