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园艺学报 ›› 2004, Vol. 31 ›› Issue (5): 657-659.

• 研究报告 • 上一篇    下一篇

不同培养条件对‘丰香’草莓离体叶片再生的影响

吴雪梅;汤浩茹*;文国琴;李燕   

  1. (四川农业大学林学园艺学院, 雅安625014)
  • 收稿日期:2003-12-25 修回日期:2004-03-12 出版日期:2004-10-25 发布日期:2004-10-25
  • 通讯作者: 汤浩茹

Effects of Different Culture Conditions on Regeneration from Leaves of Straw2berry ( Fraga ria ×ananassa Duch. ) ‘Toyonoka’

Wu Xuemei;Tang Haoru*;Wen Guoqin;Li Yan   

  1. ( Forestry and Horticultural College , Sichuan Agricultural University , Ya'an 625014 , China)
  • Received:2003-12-25 Revised:2004-03-12 Online:2004-10-25 Published:2004-10-25
  • Contact: Tang Haoru

摘要: 以草莓品种‘丰香’离体叶片为外植体, 探讨了基本培养基、不同细胞分裂素、暗培养、硝
酸银浓度以及不同植物生长调节剂组合对不定芽再生的影响。结果表明, 基本培养基中以MS 最为适合,WPM、QL 、AS 培养基均不利于不定芽的再生, 而TDZ 的诱导效果好于BA。以MS 基本培养基附加TDZ2.0 mg·L - 1和IBA 0.8 mg·L -1可以使‘丰香’叶片不定芽的再生率高达72.33 % , 平均每叶再生芽5.59个。暗培养14 d 可以将‘丰香’叶片的不定芽再生率提高到90.09 %。硝酸银对于提高‘丰香’叶片的不定芽再生没有明显效果, 但在一定程度上改变了细胞分化的方向。

关键词: 草莓, 不定芽, 再生, 体细胞胚发生

Abstract: The ideal regeneration system of strawberry ( Fragaria ×ananassa Duch. ) ‘Toyonoka’by leaf explants was established. In this study , the effects of plant growth regulators , dark periods and AgNO3 concentrations on shoot regeneration from leaves of strawberry were investigated. The results showed that the highest regeneration rate of 72.33 %, with 5.59 shoots per leaf disc , was obtained on the medium MS supplemented with
2.0 mg·L -1 TDZ and 0.8 mg·L -1 IBA. TDZ was more effective than BA in inducing shoot regeneration from leavesof strawberry ‘Toyonoka ’. Two weeks of dark treatment could increase the shoot regeneration rate to
90.09 %. Addition of AgNO3 to the medium could not stimulate shoot regeneration , but it changed the cell differentiational direction in somewhat from the formation of adventitious shoots to that of somatic embryos.

Key words: Strawberry, Adventitious shoots, Plant regeneration, Somatic embryogenesis

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