富贵菜器官发生的研究  

Study on Organogenesis of Gynura divaricata DC.

作　　者：李娈[1] 蒋道松[2] 周朴华[2] 

机构地区：[1]湖南农业大学东方科技学院,湖南长沙410128 [2]湖南农业大学生物科学技术学院,湖南长沙410128

出　　处：《湖南农业科学》2009年第6期4-6,共3页Hunan Agricultural Sciences

摘　　要：以富贵菜叶片、茎段为外植体,诱导过程中定期取样进行石蜡制片,观察不定芽分化过程中细胞组织学变化及不定根的发育过程。结果表明:脱分化始于叶缘周围细胞;形态发生的主要方式是由愈伤组织分化出不定芽;再生植株茎内无潜伏根原基;不定根由诱生根原基发育形成,诱生根起源于束间形成层,约12 d后,不定根原基发育为幼小不定根并伸出周皮之外。The histological changes of adventitious buds and the development of adventitious roots had been observed termly by olefin slice of leaf and stem of gynura divaricata DC. during induced process. The results showed that the dedifferentiation started from the ceils at the edge of leaf cut; the major way of morphogenesis was adventitious buds differentiated from the ealli; there were no latent root primodium in the stem of regenerated plant; the adventitious roots developed from induced root primordia, which 12 days later than induced root originated from interfascicular cambium.

关 键 词：富贵菜 不定芽 不定根 器官发生 

分 类 号：S649[农业科学—蔬菜学]