北方农业学报 ›› 2020, Vol. 48 ›› Issue (5): 119-124.doi: 10.12190/j.issn.2096-1197.2020.05.21

• 园艺·草业 • 上一篇    下一篇

高丹草组织培养再生体系的建立

石悦1,2, 房永雨3, 于卓2, 杨东升2, 柴文娟1, 刘拴成1   

  1. 1.集宁师范学院 生命科学学院,内蒙古 集宁 012000;
    2.内蒙古农业大学 农学院,内蒙古 呼和浩特 010019;
    3.内蒙古自治区农牧业科学院 草原研究所,内蒙古 呼和浩特 010031
  • 收稿日期:2020-08-02 出版日期:2020-10-20 发布日期:2020-12-17
  • 通讯作者: 于 卓(1958—),男,教授,博士,博士生导师,主要从事饲用作物及马铃薯遗传育种的研究工作。
  • 作者简介:石 悦(1990—),女,讲师,博士,主要从事饲用作物遗传育种的研究工作。房永雨(1984—),男,助理研究员,博士,主要从事牧草育种与分子生物学的研究工作。石悦和房永雨为同等贡献作者。
  • 基金资助:
    集宁师范学院博士科研启动基金项目(jsbsjj1901); 国家自然科学基金(31772644); 内蒙古自治区自然科学基金项目(2018BS03011)

Establishment of tissue culture and regeneration system for Sorghum-Sudangrass

SHI Yue1,2, FANG Yongyu3, YU Zhuo2, YANG Dongsheng2, CHAI Wenjuan1, LIU Shuancheng1   

  1. 1. College of Life Science,Jining Normal University,Jining 012000,China;
    2. College of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,China;
    3. Institute of Grassland,Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China
  • Received:2020-08-02 Online:2020-10-20 Published:2020-12-17

摘要: 【目的】建立高丹草组织培养再生体系,为高丹草转基因育种研究奠定基础 。【方法】试验以高丹草成熟种子为外植体,采用MS基本培养基,研究不同外源激素配比(2,4-D、NAA、6-BA、IBA)对愈伤组织、不定芽诱导分化和组培苗生根的影响。【结果】适宜的愈伤组织诱导培养基为MS+2,4-D(1.5 mg/L),诱导率达到65.63%;芽分化培养基为MS+NAA(0.5 mg/L)+6-BA(1.5 mg/L),分化率为80.21%;生根培养基为MS+IBA(1.0 mg/L),生根率达74.30%;移栽组培苗选择花土∶珍珠岩∶蛭石=3∶1∶1的营养土作为移栽基质,生长状况较好。【结论】高丹草成熟种子的再生体系为诱导培养基MS+2,4-D(1.5 mg/L),芽分化培养基为MS+NAA(0.5 mg/L)+6-BA(1.5 mg/L),生根培养基为MS+IBA(1.0 mg/L)。

关键词: 高丹草, 成熟种子, 组织培养, 愈伤组织

Abstract: 【Objective】To establish a tissue culture and regeneration system of Sorghum-Sudangrass for the research of Sorghum-Sudangrass transgenic breeding.【Methods】The experiment used MS as the basic medium,and the mature seeds of Sorghum-Sudangrass were used as explants to study the effect of different exogenous hormone ratios(2,4-D,NAA,6-BA,IBA)on callus,induction and differentiation of adventitious buds and influence of seedling rooting.【Results】The suitable callus induction medium was MS+2,4-D(1.5 mg/L),and the induction rate reached 65.63%;adventitious bud inductions MS medium with NAA(0.5 mg/L)and 6-BA(1.5 mg/L)was optimal,with a adventitious bud induction rate of 80.21%;the optimal rooting medium was MS medium containing 1.0 mg/L IBA,with a rooting rate of 74.30%;for transplanting tissue culture seedlings,the nutrient soil of flower soil∶perlite∶vermiculite = 3∶1∶1 was selected as the transplanting substrated.【Conclusion】 The regeneration system of mature seeds of Sorghum-Sudangrass was induction medium MS+2,4-D(1.5 mg/L),and the bud differentiation medium was MS+NAA(0.5 mg/L)+6-BA(1.5 mg/L),and rooting medium was MS+IBA(1.0 mg/L).

Key words: Sorghum-Sudangrass, Mature seeds, Tissue culture, Callus

中图分类号: 

  • S544.9