whereas corn plants were grown directly in sterilized soil. Following
transplantion into pots, the plants were watered regularly. The plants were grown at
irradiance level 1000 Ilmol m-2
S-1 (PAR). The greenhouse growth conditions were 24/16
oC (day/night) air temperature and 75% relative humidity. The light-dark cycle was 16-8
h. supplementallighting was supplied using high pressure sodium lamps (Phillips,
Montreal, QC).