| 野鸢尾种子至种苗的发育形态学 |
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| 引用本文： | 刘强,刘剑锋,程云清,周晓梅,王占武,倪福太.野鸢尾种子至种苗的发育形态学[J].东北林业大学学报,2012(2):23-25,88. |
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| 作者姓名： | 刘强 刘剑锋 程云清 周晓梅 王占武 倪福太 |
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| 作者单位： | 吉林师范大学 |
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| 基金项目： | 吉林省科技重点资助项目(20070225);吉林师范大学博士科研启动基金(吉师博2009006) |
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| 摘 要： | 追踪观察了野鸢尾从种子到种苗的发育过程。结果发现,种子胚苗端发育先于根端;萌发时首先出现下胚轴,继而根环处膨大产生下胚轴毛。种子胚时期,胚芽呈三角形,萌动一段时间后变为舌形,继而胚芽位置开始膨大,向外一侧的子叶鞘逐渐变薄,胚芽突破子叶鞘进入空气之中。野鸢尾可能是由原始水生植物进化来的,因为其种苗发育具有原始水生大型植物的特点。
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| 关 键 词： | 野鸢尾 种子 种苗 发育形态学 |
Developmental Morphology of Iris dichotoma from Seed to Seedling |
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| Liu Qiang,Liu Jianfeng,Cheng Yunqing,Zhou Xiaomei,Wang Zhanwu,Ni Futai.Developmental Morphology of Iris dichotoma from Seed to Seedling[J].Journal of Northeast Forestry University,2012(2):23-25,88. |
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| Authors: | Liu Qiang Liu Jianfeng Cheng Yunqing Zhou Xiaomei Wang Zhanwu Ni Futai |
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| Institution: | (School of Life Sciences,Jilin Normal University,Siping 136000,P.R.China) |
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| Abstract: | An experiment was conducted to observe the development process from seed to seedling of Iris dichotoma.Results showed that the shoot ends developed earlier than the root ends in seed embryo.When the seeds germinated,the hypocotyls appeared firstly and swelled around the end of it,and some hairs(hypocotyl hair) arose from the swelling.Embryo was triangular in seed embryo,and then embryo developed into a tongue shape and swelled after a time.At last,embryo broke out of cotyledonary sheath into air.The development process of I.dichotoma seedlings coincides with that of original aquatic macrophytes.I.dichotoma may evolve from original aquatic plants. |
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| Keywords: | Iris dichotoma Seeds Seedlings Developmental morphology |
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