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

• 栽培·生理生化 • 上一篇    下一篇

苹果砧木B9再生体系的建立与优化

田玉凤,马松亚*(masongya@caas.cn),杨  安,韩晓蕾,张彩霞*(zhangcaixia@caas.cn)   

  1. 中国农业科学院果树研究所,农业农村部园艺作物种质资源利用重点实验室,国家苹果育种中心,辽宁兴城125100
  • 收稿日期:2024-11-08 修回日期:2025-01-17 出版日期:2025-04-25 发布日期:2025-04-25
  • 通讯作者: *E-mail:masongya@caas.cnzhangcaixia@caas.cn
  • 基金资助:
    国家重点研发计划项目(2022YFD1600500)现代农业产业技术体系建设专项资助(CARS-27)中国农业科学院科技创新工程(CAAS-ASTIP-2021-RIP -02)

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 Published:2025-04-25 Online:2025-04-25

摘要: 为了建立高效的苹果砧木再生体系,以B9组培苗离体叶片为外植体,对不同浓度的TDZ/NAA植物激素组合、暗培养时间、苗龄以及潮霉素浓度等影响再生的重要因素进行筛选。结果表明:不定芽诱导培养基为MS + 3.0 mg · L-1 TDZ + 0.3 mg · L-1 NAA + 蔗糖30 g · L-1 + 琼脂7 g · L-1,苗龄45 d,暗培养14 d时不定芽再生效率最高;增殖培养基为MS + 0.8 mg · L-1 6-BA + 0.2 mg · L-1 IAA + 蔗糖30 g · L-1 + 琼脂7 g · L-1时,不定芽增殖效果最好;生根培养基为1/2MS + 0.6 mg · L-1 IBA + 蔗糖30 g · L-1 + 琼脂7 g · L-1时,组培苗生根率和平均生根数最高。叶片再生时潮霉素筛选浓度为2 ~ 4 mg · L-1,生根时潮霉素筛选浓度为2 ~ 3 mg · L-1

关键词: 苹果, 砧木, 再生, 植物激素, 不定芽

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

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