生物技术通报 ›› 2013, Vol. 0 ›› Issue (1): 111-115.

• 研究报告 • 上一篇    下一篇

甘蓝型油菜高效离体再生体系的建立

杨长友,袁中厚,郑小敏 ,张涛   

  1. 重庆师范大学生命科学学院,重庆 401331
  • 收稿日期:2012-07-26 修回日期:2013-01-31 出版日期:2013-01-30 发布日期:2013-01-30
  • 作者简介:杨长友,男,硕士研究生,研究方向:生物化学与分子生物学;E-mail :15823507359@126.com
  • 基金资助:
    国家自然科学基金(31171588),重庆市自然科学基金(cstc2010BB5324,cstc2012jjA80010),重庆市教委科技项目(KJ100604)

Establishment of Effective Regeneration System of Brassica napus L.in vitro

Yang Changyou, Yuan Zhonghou ,Zheng Xiaomin ,Zhang Tao   

  1. College of Life Science,Chongqing Normal University,Chongqing 401331
  • Received:2012-07-26 Revised:2013-01-31 Published:2013-01-30 Online:2013-01-30

摘要: 以甘蓝型油菜(Brassica napus L.)HC8 为材料,从无菌苗苗龄、预培养基激素浓度、预培养天数、6-BA 及NAA 的浓度等方面对影响油菜组织培养的因素进行了分析研究,建立了甘蓝型油菜品系HC8 的离体再生技术体系。结果表明,该油菜组织培养的最佳苗龄为5 d ;最佳预培养时间为5 d,最佳2,4-D 浓度为1.0 mg/L ;子叶最佳诱导培养基为MS+2.0 mg/L 6-BA+0.05 mg/LNAA+3.5 mg/L AgNO3 或MS+3.0 mg/L 6-BA+0.1 mg/L NAA+3.5 mg/L AgNO3,该条件下子叶愈伤组织诱导率最高可达100%,再生频率及分化频率分别可达88.0% 和108.33% ;下胚轴最佳诱导培养基为MS+4.0 mg/L 6-BA+0.05 mg/L NAA+3.5 mg/L AgNO3,子叶愈伤组织诱导率最高可达95.24%,再生频率及分化频率分别可达81.82% 和104.55% ;最佳生根培养基为MS+0.5 mg/L NAA,生根率最高为90.0%。

关键词: 甘蓝型油菜 , 愈伤组织诱导 , 离体再生 , 芽分化

Abstract: We examined the effect of the seedling age of sterile seedling, the days and concentrations of growth regulators in precultivation,the concentrations of 6-BA and NAA on rape tissue culture with HC8(Brassica napus L.). We established the technical systemof regeneration of HC8 in vitro with high frequency. The results showed that the best seedling age and the optimal day of pre-cultivation wasfive days for rape tissue culture with HC8, and the optimal concentration of 2, 4-D was 1.0 mg/L. The best medium for callus induction anddifferentiation of cotyledons were MS+2.0 mg/L 6-BA+0.05 mg/L NAA+3.5 mg/L AgNO3 or MS+3.0 mg/L 6-BA+0.1 mg/L NAA+3.5 mg/L AgNO3.With the medium, the ratios of the highest level of callus induction, regeneration and differentiation were 100%, 88% and 108.33%, respectively.The best medium for callus induction and differentiation of hypocotyls were MS+4.0 mg/L 6-BA+0.05 mg/L NAA+3.5 mg/L AgNO3. With themedium, the ratios of the highest level of callus induction, regeneration and differentiation were 95.24%, 81.82% and 104.55%, respectively.The best medium for rooting of regenerated plant was MS basal medium supplemented with 0.5 mg/L NAA with the ratio of the highest level ofrooting(90%).

Key words: Brassica napus L. , Callus induction , Regeneration in vitro , Shoots differentiation