抄録
It is evident in soybean plants that as the intensity of supplemental illumination at night for the purpose of gibing long day decreases lower, the inhibition of blooming due to long-day condition decreases as well. On the contrary, the intensity of the illumination increases higher, the inhibition of blooming increases as well. Furthermore this relation seems to be found more prominently in late-maturing varieties than early maturing ones, even when the supplemental illumination is not so strong. In discussing the influence of day-length, importance of the intensity of light must not be disregarded.
