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秦艽(Gentiana macrophylla Pall.)离体培养再生过程中体细胞胚的发生(简报)(英文) 被引量:2

SOMATIC EMBRYOGENESIS PATHWAY FOR PLANT REGENERATION IN QINJIAO(GENTIANA MACROPHYLLA PALL.)
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摘要 本文以秦艽叶片和茎段作为外植体,通过离体培养对秦艽植株再生途径进行研究。愈伤组织在添加2mg/L 2,4-D和0.5mg/L BA的MS培养基上诱导,两周内可出现愈伤组织。愈伤组织在相同激素配比并附加500mg/L LH的MS培养基上继代。愈伤组织的分化在添加有0.1mg/L 2,4-D和0.5mg/L BA的MB培养基上进行。通过显微观测,疑似体细胞胚可以在叶片和茎段的愈伤组织上产生。形态学和组织学的分析进一步证实了秦艽离体再生过程中体细胞胚发生的现象。体细胞胚和合子胚一样,也经历球形、心形、鱼雷和子叶胚等发育时期。相对独立的结构说明秦艽的体细胞胚可能是单细胞来源。体细胞胚在愈伤组织的表面和内部都有出现。在本实验中,体细胞胚发生途径是在秦艽愈伤组织形成后观察到的唯一再生途径。 Qinjiao (Gentiana macrophylla Pall,) is a perennial herbage native to northwestern China. It has been taken as a kind of Chinese herbs for more than one thousand years . The major secondary metabolite named as gentiopicroside accounts for 8% of the dry weight of roots. It has been used for medical purpose in the treatment with rheumatism, osteoarthritis,
出处 《分子细胞生物学报》 CSCD 北大核心 2007年第4期267-271,共5页 Journal of Molecular Cell Biology
关键词 组织学分析 秦艽 次生胚 体细胞胚 Histological study. Qinjiao. Secondary embryo. Somatic embryo
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