a Laboratory of Plant Physiology, The Institute of Physical and Chemical Research, Wakoshi, Saitama, Japan
b Institute of Biophysics, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
Abstract:
Spruce leaves greened in darkness were devoid of three of the five thermoluminescence bands found for mature leaves. These bands were developed rapidly by exposure of the dark-grown leaves to continuous light. The development of these bands was studied by illumination with repetitive flashes at varied intervals. Flashes at intervals of 1 s were the most effective in inducing these bands. Those at shorter or longer intervals were less effective. It was deduced from these data that the development of these bands is a multiquantum process which involves at least two photo-events with a dark reaction between them.