Fig. 6.
The 75 ms linear time plot of the variable fluorescence response (F exp(t) − F PP(t)), complementary to the rise exclusively caused by the release of primary photochemical quenching, upon a 1 s saturating pulse SP (red line) of 3000 µmol photons m−2 s−1 intensity in a Kalanchoë leaf. The curve is obtained after subtraction F PP(t) (see Fig. 4, 5) from F exp(t) (see insert Fig. 2). The curve with red diamonds is the graphic plot of Eq. 7, attributed to F PE(t), with substitution of the parameter values estimated for F PP(t) (see insert Fig. 4) and supplemented with those estimated for k qbf and k −qbf, given in the insert table, to obtain the best fit with the experimental curve in the 0 to 30 ms time domain, after ‘correction’ for F PP(t)