关键词: 合欢, 扦插, 不定根, 解剖, 酶活性

Abstract: With one-year hardwood cutting from Albizia julibrissin Duraxx. trees, we studied the anatomical structure during the formation of adventitious roots by paraffin section, and detected the activities of peroxidase(POD), polyphenol oxidase(PPO) and indoleaceticacid oxidase by colorimetry. The adventitious root of A.julibrissin cuttings was derived from a type of induced root primordium, and the primordium of adventitious root originated from the cambium. The enzyme activities of POD, PPO and IAAO showed the same trends in treatment and control during rooting process, but the activities of three enzymes in treatment were higher than those in control.

Key words: Albizia julibrissin, Cutting, adventitious root, anatomy, enzymatic activity