Three DAWW gs and E of the 390 WS plants were reduced compared
to the first DAWW (Figs. 5A and 5B). On the same day, Pn
of 750 WS plants was similar to that of 390 WW and 750 WW
plants (Fig. 5C). In contrast, Pn of 390 WS plants was only 12.1 mol
CO2 m−2 s−1, a value 34% lesser than of that 750 WS plants. When
the leaf cuvette CO2 concentration was increased to 750 L L−1, gs
(Fig. 5A) and Pn (Fig. 5C) of 390 WS plants were similar to that of
750 WW and 390 WW plants.