After leaves were sprayed with p chloromercuri benzoie acid (PCMB), the ADC activity was inhibited and putamine content was reduced. However the Spd and Spm content rose slightly.

• 对氯汞苯甲酸（PCMB）能抑制ADC活性，并使腐胺（Put）含量减少，而亚精胺（Spd）和精胺（Spm ）含量稍有增加。