2.7. Growth conditions
All the cultures were kept under eight hour dark period and sixteen hour
photoperiod in a growth room (except Callus induction). Artificial light
was provided by parallel cool white fluorescent tubes installed above
the cultures. The light intensity was regulated to 1500-2000 lux and the
growth room temperature was adjusted at 25 ± 2 oC with
relative humidity (RH) of 65-70%.