In root, there were some correlations between TSB activity, TDC activity and CPT content, especially, the correlation was more obvious between TSB activity and CPT content in light shading.

• 在根中,TSB和TDC活性与喜树碱含量之间有一定的相关性,尤其是轻度遮荫条件下TSB活性与喜树碱含量的相关性表现较为明显。