在幼叶、成叶和树皮中重度遮荫的TSB活性大于轻度遮荫的，在根中则是轻度遮荫的大于重度遮荫的。

In young leaves, mature leaves and bark, TSB activity of heavy shading was higher than that of light shading, however, in root, a reverse result was showed.

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TDC在幼叶中的活性最高，其次依次为成叶、根和树皮。(3)在遮荫处理过程中，TSB活性先下降后上升。

TDC activity was highest in young leaves, the following were mature leaves, root and bark sequently. (3) During the period of shading, TSB activity firstly decreased, and then increased.

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