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突尼斯软籽石榴组织培养技术研究

Study on Tissue Culture Technology of Tunisia Soft Seed Pomegranate

  • 摘要: 本研究以突尼斯软籽石榴为材料,分别选取叶片和茎段为外植体,筛选出适宜的外植体、诱导培养基,并进行增殖培养、试管苗生根及驯化移栽。结果表明,用茎段和叶片作为外植体时,均表现出处理8(配方为MS+6-BA 0.6 mg/L+NAA 0.3 mg/L培养基)诱导率最高,分别为82.78%和45.00%,极显著(p<0.01)高于其他组合;相对于叶片来说,茎段是较为理想的外植体材料;最适宜继代愈伤组织分化的是处理7(配方为MS+6-BA 1.0 mg/L+NAA 0.4 mg/L培养基),分化率为75.00%,显著(p<0.05)高于其他组合,其次是处理6(配方为MS+6-BA 1.0 mg/L+NAA 0.2 mg/L),分化率为73.89%;最适宜突尼斯软籽石榴组培苗生根的是处理8(配方为1/2 MS+IBA 0.5 mg/L+NAA 0.3 mg/L)和处理7(配方为1/2 MS+IBA 0.5 mg/L+NAA 0.1 mg/L),生根率达90.00%以上,组培苗长势较佳;将生根苗移栽到V园土∶V草炭土∶V珍珠岩=2∶2∶1的基质中,成活率高达96.83%。

     

    Abstract: In this study, Tunisia soft seed pomegranate was used as material, and the leaves and stems were selected as explants. The suitable explants and induction medium were selected, and the proliferation culture, rooting and domestication of test tube seedlings were carried out. The results showed that when stem segments and leaves were used as explants, the induction rate of treatment 8 medium with MS + 6-BA 0.6 mg/L + NAA 0.3 mg/L was the highest, 82.78% and 45.00%, respectively(p<0.01), higher than other combinations extremely significantly. Compared with leaves, stem segment was an ideal explant material. The most suitable medium for subculture callus differentiation was MS + 6-BA 1.0 mg/L + NAA 0.4 mg/L medium in treatment 7, and the differentiation rate was 75.00%, which was significantly higher than that of other combinations(p<0.05), followed by MS + 6-BA 1.0 mg/L + NAA 0.2 mg/L, the differentiation rate was 73.89%. The most suitable for the rooting of Tunisia soft seed pomegranate tissue culture seedlings was that the formula of treatment 8 with 1/2 MS + IBA 0.5 mg/L + NAA 0.3 mg/L and the formula of treatment 7 with 1/2 MS + IBA 0.5 mg/L + NAA 0.1 mg/L,of which the rooting rate was more than 90.00% and tissue culture seedlings had good growth. The rooting seedlings were transplanted into garden soil, peat soil and perlite with a ratio of 2∶2∶1, and the survival rate was as high as 96.83%.

     

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