Figure 11From: Mechanisms by which the infection of Sclerotinia sclerotiorum (Lib.) de Baryaffects the photosynthetic performance in tobacco leavesThe effect of K 2 C 2 O 4 and KCl treatment on the cyclic electron flow. The treated leaves were illuminated with a 20 s far-red light, then turn off the light and record the changes of the MR820nm signal. The initial rate of MR820nm indicates the activity of cyclic electron flow.Back to article page