After one month under each EOD treatment, the elongating part of the shoot tips (stem) (0.5–1 cm) from each of six plants of the cv Christmas Eve were harvested into liquid nitrogen.
The samples were freeze-dried using a freeze dryer machine.
For each light treatment six samples, each consisting of three shoot tips from one plant, were used for hormone analysis.
Of these, three samples were used for the analysis of auxin, abscisic acid (ABA), cytokinin (CK) and their metabolites, and the three other samples were used for gibberellin (GA) analysi