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Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (4): 947-958.doi: 10.16420/j.issn.0513-353x.2024-0707

• Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Establishment and Optimization of Regeneration System for Apple Rootstock B9

TIAN Yufeng,MA Songya*(masongya@caas.cn),YANG An,HAN Xiaolei,and ZHANG Caixia*(zhangcaixia@caas.cn)   

  1. National Apple Breeding Center,Key Laboratory of Horticultural Crop Germplasm Resource Utilization of the Ministry of Agriculture and Rural Affairs,Institute of Pomology Research,Chinese Academy of Agricultural Sciences,Xingcheng,Liaoning 125100,China
  • Received:2024-11-08 Revised:2025-01-17 Online:2025-04-25 Published:2025-04-25
  • Contact: ZHANG Caixia

Abstract: To establish an efficient regeneration system for apple rootstock,this study utilized detached in vitro leaves from tissue-cultured seedlings of apple rootstock B9 as explants. This study screened key factors influencing regeneration,including various concentrations of phytohormone combinations,durations of dark culture,seedling ages,and hygromycin concentration. The findings revealed that the optimal medium for inducing indefinite buds was MS + 3.0 mg · L-1 TDZ + 0.3 mg · L-1 NAA + 30 g · L-1 sucrose + 7 g · L-1 agar,with a seedling age of 45 days and a dark culture period of 14 days,leading to the highest regeneration efficiency. The proliferation medium consisted of MS + 0.8 mg · L-1 6-BA + 0.2 mg · L-1 IAA + 30 g·L-1 sucrose + 7 g · L-1 agar;The rooting medium was 1/2 MS + 0.6 mg · L-1 IBA + 30 g · L-1 sucrose + 7 g · L-1 agar. The appropriate hygromycin concentration for leaf regeneration was 2–4 mg · L-1,while for rooting,it was 2–3 mg · L-1.

Key words: apple, rootstock, regeneration, phytohormone, indefinite buds

CLC Number: