Department of Horticulture, University of Wisconsin, Madison, Wisconsin 53706.
Plant Physiol. 1971 Jan;47(1):68-70. doi: 10.1104/pp.47.1.68.
Rhythmic rotational movements with the midvein as the axis have been observed in the unifoliate leaves of Phaseolus angularis Wight grown under controlled environmental conditions with continuous light. The mean period of this movement for all leaves was 53.2 +/- 4.3 minutes and remained constant as the leaf matured, except after removal of the apical meristem and emerging trifoliate leaf when the period increased by about 5 minutes. The amplitude of the movement also remained constant as the leaf matured. These rotational movements were pronounced when the leaf blade was in a horizontal position and were not evident during the downward or "sleep" movements of the leaf. This movement began 3 days after leaf unfolding and continued for at least 6 days. It was most pronounced at the time of inflection of the leaf length growth curve after the logarithmic phase of growth.
在控制环境条件下，用连续光照培养的豌豆单叶，观察到以中脉为轴的有节奏的回旋运动。所有叶片的平均运动周期为 53.2±4.3 分钟，在叶片成熟过程中保持不变，除了去除顶芽和出现三叶的新叶时，周期增加了约 5 分钟。叶片成熟时，运动的幅度也保持不变。当叶片处于水平位置时，这种回旋运动很明显，而在叶片向下或“休眠”运动时则不明显。这种运动在叶片展开后 3 天开始，并持续至少 6 天。它在生长对数阶段之后，叶片长度生长曲线的拐点处最为明显。
