NaCl (50 mM) was applied to 14-day-old seedlings which had been raised in the growth chamber
At day 15, the plants were trans- ferred to the glasshouse
Photosynthetic gas exchange parameters (PN , gs , E and Ci )were assayed at noon with a CIRAS-1 photo- synthesis system (UK) on the most recent fully expanded leaves when the seedlings were 18 days old
At the time of measurement, the photosynthetic active radiation at the plant canopy was about
300 mol m−2 s−1 and leaf temperature was 22–24 ◦ C.