The seeds were sown in 9x9 cm pots (0.75 l),
filled with
commercially available fertilized peat substrate (Berner Greencare,
NPK 12-6-14, conductivity 20 m Sm2), on the 18th October 2012.
Germination was carried out at +20 C/RH 80% with a 9 h daily dim
light period. The pots (6 of each species) were inserted into