Inoue Y, Oku T, Furuta S, Shibata K
Biochim Biophys Acta. 1976 Sep 13;440(3):772-6. doi: 10.1016/0005-2728(76)90060-8.
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.
