Changes in Phytohormone and Antioxidant Enzyme Activities during the Healing Process of Different Crabapple Rootstock–Scion Combinations

By measuring the changes in phytohormones and related enzyme activities of Malus ‘Huabiao’ scions different rootstocks during healing process grafting, this study aims to analyze effects on physiological metabolism grafting site, thereby providing reference for selection M. rootstocks. The live seedlings 1-0 hupehensis, robusta baccata were chosen as rootstocks, grafted with these spring by pasting method. dynamic indole acetic acid, zeatin riboside, methyl jasmonate content peroxidase, polyphenol oxidase L-phenylalanine ammonia-lyase at site measured, combinations phytohormone investigated. It was found that ‘Huabiao’/M. hupehensis had significantly higher survival rate than which only a success 63%. At beginning graft healing, contents three sites all exhibited significant decrease. However, mid late stages, great differences shown content. During process, showed some regularities. In conclusion, have strong compatibility ‘Huabiao’; thus, they are suitable be selected propagation ‘Huabiao’. addition, activity reflect affinity relationship between rootstock scion grafting.