A. Gaberscik et Z. Mazej, PHOTOSYNTHETIC PERFORMANCE AND PHOTOINHIBITION IN 2 SPECIES OF POTAMOGETON FROM LAKE BOHINJ (SLOVENIA), Acta botanica gallica, 142(6), 1995, pp. 667-672
Apparent photosynthesis, dark respiration, photochemical efficiency of
photosystem II and potential respiration, estimated as terminal elect
ron transport system (ETS) activity, were determined under experimenta
l conditions to evaluate physiological differences in two competing sp
ecies Potamogeton lucens L. and Potamogeton alpinus Balbis. The invest
igations showed that there are no significant differences in photosynt
hetic response and ETS activity. In P. lucens ETS capacity highly exce
eds dark respiration measured as O-2 consumption. Photochemical effici
ency of PS II in P. lucens was higher and the recovery after photoinhi
bition was more effective.