• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

红颜草莓组培快繁体系优化

Optimized Tissue Culture and Rapid Propagation of Benihoppe Strawberry

  • 摘要: 为进一步优化红颜草莓组培快繁体系,以红颜草莓匍匐茎尖为外植体,筛选最佳灭菌时间,并通过正交试验设计,研究培养基及植物生长调节剂对不定芽诱导、增殖、生根的影响。结果显示:最佳灭菌处理为75%酒精消毒30 s,0.1% HgCl2消毒7 min,成活率可达90%。对芽诱导的影响作用为基本培养基> 6-BA > IBA > NAA,筛选出最佳不定芽诱导培养基为MS+6-BA2.0 mg·L-1+NAA0.3 mg·L-1+IBA0.3 mg·L-1,诱导率92%。增殖阶段3种植物生长调节剂对试管苗的影响力为6-BA > GA3 > IBA,最佳增殖培养基为MS+6-BA0.50 mg·L-1+IBA0.08 mg·L-1+GA30.10 mg·L-1,增殖系数13.97。生根培养阶段,对生根指数的影响力为基本培养基> IBA >蔗糖,最佳生根培养基为1/2MS+蔗糖30 g·L-1+IBA0.4 g·L-1,生根指数为35.40。最佳移栽基质为草炭土:珍珠岩=1:1,成活率为93.33%。本试验采用的植物生长调节剂种类及浓度进一步提高了红颜草莓组培诱导率和增殖率,获得了良好的生根指数和移栽成活率,进一步优化了红颜草莓的快繁体系。

     

    Abstract: To optimize the tissue culture and rapid propagation of Benihoppe strawberry, effects of basic medium and plant growth regulators on the induction, proliferation and rooting of the adventitious buds were studied. The results showed that the disinfection of the strawberry stem tips with 75% alcohol for 30 s and 0.1% HgCl2 for 7 min satisfactorily rendered a survival rate of the tissue up to 90%. The bud induction was affected by the following factors in the order of basic medium > 6-BA > IBA > NAA. The best medium for the highest induction rate of 92%consisted of MS+ 6-BA 2.0 mg·L-1+NAA 0.3 mg·L-1+IBA 0.3 mg·L-1. The effects of the 3 plant growth regulators in the proliferation stage ranked 6-BA > GA3 > IBA with the optimal medium containing MS+6-BA 0.50 mg·L-1+IBA 0.08 mg·L-1+GA30.10 mg·L-1 resulting in a proliferation coefficient of 13.97. For the rooting, the effects were found to be in the order of basic medium > IBA > sucrose, and the optimal medium to be 1/2 MS+sucrose 30 g·L-1+IBA 0.4 g·L-1 to yield a rooting index of 35.40. The best basic medium was peat:perlite at 1:1 ratio that provided a seedling survival rate of 93.33%.The plant growth regulator and concentration used in this experiment further improved the induction and proliferation of Benihoppe strawberry, and obtained a good rooting index and seedling survival rate, and further optimized the rapid propagation system of Benihoppe strawberry.

     

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