The histological
changes detected in the shoot apical meristem of explants grown in the presence of
1.8 mM TDZ during 30 d of culture are also described. Based on these findings, it is
suggested that both auxin and CKs seem to be involved with the floral transition of Dendrobium Second Love in vitro. However, a possible direct effect of TDZ on flower
formation is not discarded.