Institute of Plant Biology and Physiology of the University, Place de la Riponne 6, CH-1005, Lausanne, Switzerland.
Planta. 1979 Jan;145(4):403-4. doi: 10.1007/BF00388370.
Apical root segments of Zea mays L. cv. Orla 264 undergo some geotropic curvature in complete darkness but the curvature increases considerably if prior to geostimulation the segments are given a light pretreatment. If the light treatment is follwed by a dark treatment before the root is geostimulated the light-induced response is not changed by dark periods up to 2 h but declines with longer ones, and disappears completely after 5 h of darkness.
玉米 cv. Orla 264 的根尖段在完全黑暗中会发生一些向地性弯曲，但如果在向地刺激之前先给予光预处理，弯曲程度会大大增加。如果在向地刺激之前，光处理后再进行黑暗处理，则黑暗期长达 2 小时不会改变光诱导的反应，但随着时间的延长，反应会逐渐减弱，黑暗 5 小时后完全消失。
