忍冬种子萌发期间PAL活性呈不断提高趋势，并在胚根与子叶突破或脱离种应时出现两次高峰；氯原酸含量表现为持续提高，提高幅度不断加大。PAL活性变化与氯原酸含量变化并不同步但有密切关系。笔者还测定了幼苗不同器官中的PAL活性与氯原酸含量。

Changes of phenylalanine ammonia lyase (PAL) activity and chlorogenic acid content of honeysuckle seeds during germination were studied. The results showed that the activity of phenylalanine ammonia lyase increased and two peaks occurred on the time when the radicle and cotyledon broke the seed coats, and the content of chlorogenic acid also increased but not synchronously. There was close relationship between phenylalanine ammonia lyase activity and chlorogenic acid content. The phenylalanine ammonia lyase activity and chlorogenic acid content in different organs of honeysuckle seedlings were determined.