Department of Botanical Sciences and Space Biology Laboratory, Brain Research Institute, University of California, Los Angeles, California 90024.
Plant Physiol. 1971 May;47(5):676-81. doi: 10.1104/pp.47.5.676.
The rhythmic leaf movement of Biloxi soybean (Glycine max) and its relationship to the rhythmic flowering response were studied. The movements of fully expanded trifoliate leaves were recorded with kymographs and time lapse photography in growth chambers. A comparison between the leaf movement rhythm and the rhythmic flowering response indicates that a high degree of similarity exists between the two rhythms. A definite relationship was shown to exist between the direction of the leaf movement and the photophil-photophobe phases of the rhythmic flowering response.Short light perturbations may affect flowering by interacting directly with the flowering process while not affecting the basic endogenous rhythm. Long light perturbations may affect flowering by phase shifting the basic endogenous rhythm. Thus, light perturbations appear to have a dual effect on the flowering response of Biloxi soybean. The hypothesis that both the flowering rhythm and the leaf movement rhythm are coupled to the same basic oscillator is supported by the similarity of the phase shifts induced in the two rhythms by identical light perturbations.
比洛克西大豆（Glycine max）的节律性叶片运动及其与节律性开花反应的关系进行了研究。在生长室中，使用动图和延时摄影记录完全展开的三叶叶片的运动。将叶片运动节律与节律性开花反应进行比较表明，两者之间存在高度相似性。叶片运动的方向与节律性开花反应的光性-避光阶段之间存在明确的关系。短暂的光照干扰可能通过直接与开花过程相互作用而不影响基本的内源性节律来影响开花。长光照干扰可能通过改变基本的内源性节律来影响开花。因此，光照干扰似乎对比洛克西大豆的开花反应有双重影响。开花节律和叶片运动节律都与相同的基本振荡器耦合的假设得到了支持，因为相同的光照干扰在这两种节律中引起的相位移动具有相似性。
