[Objective] The study aimed to reveal the effect of osmosis-regulating substances and organic appendices on somatic embryogenesis in wheat. [Method] The suitable concentration combination of appendices was optimized by adding different concentrations of osmosis-regulating substances including mannitol, sorbitol and organic appendices such as Gln, CH and LH, into the somatic embryogenesis in wheat. [Result] The mannitol or sorbitol lower than 40 g/L was helpful for improving somatic embryogenesis; there was no significant difference in the induction rate of somatic embryogenesis when 300-500 mg/L Gln、CH or LH was respectively added into the induced medium, while somatic embryogenesis could be enhanced dramatically in the presence of 500 mg/L Gln together with 300 mg/L CH. [Conclusion] Somatic embryogenesis could be improved to some extent by different concentrations of osmosis-regulating substances and organic appendices, which laid foundation for establishing a more perfect system of somatic embryogenesis in wheat.
用不同浓度配比的生长素和细胞分裂素诱导梨枣叶片和茎段愈伤组织的产生,并研究了不定芽诱导的最佳配方,建立了梨枣叶片和茎段的再生体系。结果表明,梨枣叶片愈伤组织诱导的最佳培养基为M S+2,4-D 1.5m g.L-1+6-BA 0.5 m g.L-1;茎段为M S+2,4-D 1.0 m g.L-1+6-BA 0.5 m g.L-1。叶片不定芽诱导的最佳培养基为M S+IBA 0.1 m g.L-1+6-BA 1.5 m g.L-1。A gNO3能阻止叶片外植体褐化并有效地促进叶片愈伤组织分化。茎段能在同一培养基上产生愈伤组织并直接分化出不定芽。
