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中国农学通报 ›› 2020, Vol. 36 ›› Issue (28): 43-51.doi: 10.11924/j.issn.1000-6850.casb20191000780

所属专题: 生物技术 园艺

• 林学·园艺·园林 • 上一篇    下一篇

洋葱通用型愈伤组织诱导的建立

杨海峰1(), 惠林冲1, 陈微1, 李威亚1, 何林玉1, 王江英1, 陈振泰1, 缪美华1, 潘美红1(), 刘冰江2   

  1. 1连云港市农业科学院,江苏连云港 222000
    2山东省农业科学院蔬菜花卉研究所,济南 250000
  • 收稿日期:2019-10-31 修回日期:2020-02-23 出版日期:2020-10-05 发布日期:2020-09-23
  • 通讯作者: 潘美红
  • 作者简介:杨海峰,男,1978年出生,贵州黄平人,副研究员,本科,研究方向:洋葱育种、栽培及分子生物学研究。E-mail:13775492959@163.com
  • 基金资助:
    江苏省自主创新项目“高效生态加工型洋葱产品产业链技术创新与集成应用”(CX(17)2020);连云港市财政专项支持“CRISPR/Cas9初步建立洋葱基因编辑转化体系”(QNJJ1806);苏北科技专项项目“优质多样化洋葱绿色高效生产技术集成与示范”(LYG-SZ201931)

Establishment of Universal Allium cepa Callus Induction

Yang Haifeng1(), Hui Linchong1, Chen Wei1, Li Weiya1, He Linyu1, Wang Jiangying1, Chen Zhentai1, Miao Meihua1, Pan Meihong1(), Liu Bingjiang2   

  1. 1Lianyungang Academy of Agricultural Sciences, Lianyungang Jiangsu 222000
    2Vegetable and Flower Research Institute of Shandong Academy of Agricultural Sciences, Jinan 250000
  • Received:2019-10-31 Revised:2020-02-23 Online:2020-10-05 Published:2020-09-23
  • Contact: Pan Meihong

摘要:

为研究洋葱愈伤诱导体系建立问题,对洋葱种子幼苗、鳞茎盘、幼嫩花序不同组织进行愈伤诱导,同时对愈伤组织进行继代培养和发芽诱导筛选。结果表明,12份洋葱种子材料未诱导出愈伤组织,12份洋葱球的鳞茎盘只有‘早春黄3号(不育系)’诱导出愈伤组织;22份洋葱花序在黑暗条件进行愈伤诱导,诱导率为100%,说明洋葱不同组织对愈伤的诱导发生存在差异,洋葱幼嫩花序培养基诱导率100%,说明洋葱最佳诱导愈伤的组织为幼嫩花序。对不同材料愈伤进行继代培养,‘早春黄3号(不育系)’和‘黄金大玉葱’愈伤生长最快;利用液体培养基进行继代培养,能够快速、高效扩繁愈伤组织。选用27份不同梯度组合的培养基对愈伤组织进行出苗诱导,在光照条件下,开始会有绿色组织形成,全部诱导出根,均未诱导出苗。石蜡切片观察外植体诱导愈伤和继代培养愈伤无差异,再生培养基诱导后有根形态形成。说明不同成分的培养基诱导洋葱愈伤组织,其内部促进生根的激素增加,导致根的诱导发生。通用型洋葱愈伤组织的诱导形成,为不同基因型的洋葱诱导出苗、生根奠定材料基础,对洋葱基因编辑等技术应用具有促进作用。

关键词: 洋葱, 幼嫩花序, 愈伤组织, 诱导, 通用型

Abstract:

The paper aims to study the establishment of onion callus induction system. Callus induction was carried out from onion seedlings, bulbs and young inflorescence, and the callus was subcultured and germinated. The results showed that callus was not induced in 12 accessions of onion seed material, only 12 accessions of the bulbs of onion balls had callus induction by ‘Zaochunhuang3 (sterile line)’; 22 accessions of onion inflorescence had callus induction in dark condition, and the induction rate was 100%. The results showed that there was distinct difference in callus induction from diverse tissues of onion. The induction rate of onion young inflorescence medium was 100%, indicating that it was the best tissue for callus induction of onion. Callus subculture of dissimilar materials showed that ‘Zaochunhuang3 (sterile line)’ and ‘Big Golden Globe’ had the fastest growth of callus; subculture with liquid medium could quickly and efficiently expand the callus. The callus was satisfied to emerge from the medium with 27 gradient combinations. Under light condition, green tissues were formed first, and roots were induced in all the medium, while no seedlings were induced. Paraffin sections showed no difference in explant-induced callus and subculture callus, and root formation was observed after regeneration medium induction, indicating that the medium of separate ingredients could induce onion callus, and the internal hormones promoting rooting increased, leading to the induction of roots. Therefore, the study on the induction and formation of general-purpose onion callus lays a material foundation for the induced emergence and rooting of onion of distinct genotypes, and promotes the application of onion gene editing.

Key words: Allium cepa, young inflorescence, callus, induction, general purpose

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