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    瓜叶菊‘小丑’系列品种再生体系的研究

    Plant regeneration of five color series of Senecio cruentus ‘Jester’

    • 摘要: 以瓜叶菊‘小丑’系列5个花色品种的种子为外植体,MS为基本培养基,筛选出了瓜叶菊试管培养所需的培养基中最佳生长素种类及浓度,获得了试管苗。在此基础上,对试管苗进行了再生体系的研究。结果表明,不同外植体、生长调节剂种类及浓度均影响植株再生:叶片再生能力优于叶柄;诱导丛生芽效果最好的培养基配方为MS+6--BA 2.0 mg/L;诱导愈伤组织增殖的最佳培养基为MS+NAA 1.0 mg/L +6--BA 1.0 mg/L;诱导植株再生的最佳培养基为 MS+6--BA 2.0 mg/L + NAA 2.0 mg/L;生根培养基以添加 0.5 mg/L NAA 的1/2MS为佳。试管苗出瓶后,经过适宜培养,获得了健壮的开花植株。对再生植株花色进行测定发现,不同种子在上述培养基中建立的再生株系花色稳定。

       

      Abstract: In this study we used the seeds of Senecio cruentus ‘Jester’ as explants, and MS as the basal medium to select the optimal combination and concentration of growth regulators for plant regeneration. The results showed that different explants, growth regulator combinations and concentrations had significant effects on plant regeneration. The regernation capacity of laminae was higher than that of petioles. MS + 2.0 mg/L 6-BA gave the best result for multiplication of shoots. The optimal medium for callus multiplication was MS + 1.0 mg/L NAA + 1.0 mg/L 6-BA and for plant regenerated was MS + 2.0 mg/L 6-BA + 2.0 mg/L NAA. For the rooting medium, 1/2 MS added with 0.5 mg/L NAA was the best. Under favorable conditions healthy flowering plants were obtained after transplantation and phenotype test demonstrated that the color of flowers of regenerated plants from different seeds did not change.

       

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