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墨兰及其杂种的组织培养与快速繁殖
曾宋君; 程式君; 张京丽; 赵逢畔; 黄向力;   
中国科学院华南植物园
摘要:
针对墨兰及其杂种常规分株繁殖慢、种子在自然状况下极难萌发的情况,以仙殿白墨及其它与象牙白、西藏虎头兰杂交所得的杂种的胚,仙殿白墨与其杂种F1代的茎尖、花芽、幼叶、根进行离体培养。结果表明,胚培养以1/2MS+NAA0.5mg/L+10%椰子汁培养基萌发效果较好,发育到一定时期的早期胚即能萌发;茎尖、花芽培养在MS+6-BA05mg/L+NAA05mg/L+05%活性炭培养基上诱导原球茎比较适合,根与幼叶离体培养未诱导出原球茎;根状茎增殖在以花宝一号、花宝二号、蛋白胨等为主要原料并附加05%活性炭的自制G3培养基上长得粗壮且繁殖速度快;根状茎出芽诱导在B5+6-BA2~3mg/L+NAA02mg/L+05%活性炭培养基上效果最好;生根壮苗以1/2MS+NAA20mg/L+10%苹果汁+10%香蕉汁+10%活性炭培养基能达到较理想的效果;蔗糖浓度生根培养时以2%较佳,其它培养以3%较好。仙殿白墨杂交种的胚萌发率比仙殿白墨略低,萌发期略长;但其花芽与茎尖的原球茎诱导、根状体增殖、根状茎出芽、生根壮苗培养、生长势、抗逆性等方面均具有杂种优势。
关键词:  墨兰  原球茎  根状茎  组织培养  杂种优势  
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