EFFECT OF GREEN LIGHT TO LEAFLET MOVEMENT AND ELECTRICAL POTENTIAL ON THE PULVINULE IN KIDNEY BEAN.

为了明确绿色光对菜豆叶片运动的影响，采用不同的光强度和光照强度对菜豆叶片运动进行了研究。通过带通滤光器，对终末小叶的叶枕进行红光（红色;大于600 nm）、绿色光（绿色; 500 - 600 nm）、蓝光（蓝色;小于500 nm）和分别从白色光（白色）中消除红光、绿色光和蓝光的光（-红色、-绿色和-蓝色）照射。结果表明，在光照30分钟内，绿色的叶片垂直角（CVAL）和叶枕上、下表面电位（EP）的变化最大，其次是白色，而红色和蓝色对CVAL的影响不大，绿色的效果与绿色相同。蓝色也导致了与白色相同的效果，但红色没有影响。由于-GREEN和-BLUE含有红光成分，-RED不含红光成分，因此，不仅绿色光，而且红光也与小叶运动有关，GREEN和-GREEN的EP模式与白色相似，而不是与RED和BLUE相似，EP在开始照射后3-5分钟内向负电压方向变化，结果表明，在枕下表面的EP变为正电压，而在枕上表面的EP则不变为正电压。瓣叶下表面EP的变化与瓣叶运动密切相关，因为这种极化也发生在-BLUE中，导致了很大的CVAL。本研究的结果表明，瓣叶运动存在两个作用谱，即，光的独立影响的绿色元素（500- 600 nm）和与其它元素一起影响的红色元素。

To make clear the effect of green light to the leaflet movement of Kidney bean (Phaseolus vulgaris L.) , illuminations of red light (RED ; more than 600nm) , green light (GREEN ; between 500 and 600nm) , blue light (BLUE ; less than 500nm) and lights (-RED,-GREEN and -BLUE) which were eliminated the red, green and blue lights from white light (WHITE) respectively, were conducted onto pulvinule of the terminal leaflet throughout band-pass filters. The effect was estimated by measuring change of vertical angle of the leaflet (CVAL) and electrical potential (EP) on upper and lower surfaces of the pulvinule during 30 minutes of the illumination.GREEN showed a large CVAL following WHITE that was the most effective, although RED and BLUE did not almost affect to CVAL.The effect of -GREEN was however the same as one of GREEN.-BLUE also resulted in the same effect as WHITE,but -RED did not affect. Because -GREEN and -BLUE included an element of red light and -RED excluded one, not only green light but also red light would relate to the leaflet movement.EP patterns of GREEN and -GREEN were similar to the pattern of WHITE rather than RED and BLUE.The EP changed toward minus voltage during 3-5 minutes just after starting of illumination, then showed the polarization that the EP on a lower surface of the pulvinule changed to plus voltage, but one on the upper surface did not. Change of EP on the lower surface of leaflet would closely relate to the leaflet movement, because such a polarization also occurred in -BLUE that resulted in a great CVAL.Result from this study suggested an existence of two action spectra on the leaflet movement, i.e., a green element (500-600nm) of light that affects independently, and a red element that affects with the other elements.