Seeds of green pepper (Capsicum annuum cv.
Dulce Italiano) were sown in 20 mL multipot trays
filled with neutralised peat. For a growth chamber
experiment, 2-week-old seedlings were transferred
to 400 mL pots filled with neutralised peat, with five
pots per treatment. The experiment was conducted
in a controlled environment chamber (EGC walk-in
chamber). The photosynthetically active photon flux
density in the growth chamber was 200 μmol m−2 s−1
during the 16 h photoperiod and the temperature
was maintained at 25°C.
For greenhouse experiments, 4- or 3-week-old
plants (2009 and 2010, respectively) were transferred
to 1 L pots. One plant was placed in each pot, and
pots were filled with neutralised peat. Six pots per
treatment were randomly distributed along a north