激素水平对福建道地瓜蒌组培快繁的影响
Effect of Hormone on Tissue Culture and Rapid Propagation of Trichosanthes kirilowii Maxim
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摘要: 以福建道地瓜蒌带腋芽的茎段为外植体,MS为基础培养基,研究不同激素水平对福建道地瓜蒌组织培养的影响,探讨福建道地瓜蒌快速繁殖的有效途径。结果表明:瓜蒌带腋芽的茎段接种于MS+1.0 mgL-16-BA 蔗糖培养基上,15 d后外植体出现许多绿色的小芽点,芽点健壮;30 d后,诱导出的丛生芽数平均达6.5个,长势快,平均出芽率达81.25%。分离正常的幼芽在MS+0.4 mgL-1NAA的生根培养基上,效果最好,15 d后长出不定根,再生成完整的瓜蒌植株,平均生根5条,根系粗壮、发达,生根整齐,生根率达100%。通过瓜蒌带腋芽茎段的组织培养,可以对瓜蒌种苗进行脱毒和品种更新复壮,解决瓜蒌以种子繁育雌雄比例不协调的问题,可在短期内大量繁殖瓜蒌雌雄种苗,具有成本低,效益高的特点。Abstract: Effect of hormone application on tissue culture of Trichosanthes kirilowii Maxim was investigated. Stems with axillary buds were used as explantlet,and MS for the basic medium. A vailable methods for the rapid propagation to clone T. kirilowii Maxim are reviewed.In the experiment, the young adventitious buds continuously appeared for 15 days in the culture medium of MS + 1.0 mgL-1 BA. In 30 days, the average number of shoots was 6.5, and the average shoot ratio was 81.25%. The excised plantlets could produce root 15 days after inoculation on the MS + 0.4 mg NAA L-1 medium. They continued to gradually develop into normal plants. A single plant had an average of 5 roots. The average rooting percentage was 100%. This rapid propagation method for T. kirilowii Maxim appeared to offer many benefits at low cost.