Relative expression levels of <i>TrbSAMS</i> (A), <i>TrbSAMDC</i> (B), <i>TrbPAO</i> (C), and <i>TrbACS</i> (D) during different IBA-induced and untreated rooting phases in softwood cuttings of tetraploid black locust.

Abstract

<p>Initiation phase (I). Callus induction phase (C). Root primordia formation phase (RP). Adventitious root formation and elongation phase (AR). Error bars represent the standard deviation (SD) calculated from three biological replicates with IBA, CK (n = 3). CK, control treatment; IBA, indole-3-butanoic acid.</p