The experimental
design was again completely randomized, with treatments in
factorial 2 (NAA concentrations; 0.05 and 0.5 μM) x 2 (cytokines:
BAP and KIN) x 2 (cytokine levels: 2.2 and 4.4 μM) + 1 (control
with basal MS, without growth regulators), with ten replications per
treatment.