Abstract：Prunus x blireana ‘Meiren’twigs cuttings were treated with 200mg/L ABT rooting agent,and water treatment was used as a control to compare and analyse the changes in external morphology,nutrient content, antioxidant enzyme activity and endogenous hormone content of the cuttings during rooting.The results showed that: (1) the overall time required for cuttings to form a large number of adventitious roots from the beginning of cutting was about 28 d; (2) ABT had a significant favourable effect on the rooting of cuttings; (3)the soluble sugars,soluble protcins，Proline(Pro)，growth hormone ( Indole-3-acetic Acid, IAA) and Gibberellins (GA) content were significantly higher than CK after the late stage of cutting; (4) for the trend of Superoxide Dismutase(SOD) activity，there was no significant difference between treatments and CK. Through the analyses, it can be concluded that the rooting of Prunus x blireana‘Meiren’requires high content of IAA and low content of GA,and higher levels of soluble sugars and soluble proteins in the carly stage can promote the induction and development of adventitious roots. The accumulation of soluble sugars and soluble proteins in ABT-treated cuttings was significantly increased in the middle and late stages of cutting, while the contents of IAA and GA were also increased, which effectively balanced the endogenous hormone levels of the cuttings and provided favourable conditions for the growth of adventitious roots.
2024, Vol. 37 
