| 蜈蚣草胚胎发育的观察 |
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| 引用本文： | 马天意,宗琦,张凌献,程薪宇,刘保东.蜈蚣草胚胎发育的观察[J].西北植物学报,2010,30(5). |
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| 作者姓名： | 马天意 宗琦 张凌献 程薪宇 刘保东 |
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| 作者单位： | 1. 哈尔滨师范大学,生命科学与技术学院,哈尔滨,150025
2. 哈尔滨师范大学,生命科学与技术学院,哈尔滨,150025;中国科学院植物研究所,北京,100093 |
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| 基金项目： | 中国科学院项目，哈尔滨师范大学科技创新基金项目 |
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| 摘 要： | 用石蜡切片技术观察了蜈蚣草(Pteris vittata L.)的胚胎发育过程.结果表明:蜈蚣草的胚胎由受精卵发育而来.合子最初3次的分裂顺序为X-Y-Z;球形胚最早分化出的组织是基足,其后几乎同时分化出第一叶原始细胞和第一根原始细胞,继而分别分化出第一叶原基和第一根原基,再后来才形成茎干原基;当第一叶、第一根形成时,茎干原基仍不活跃.总结出蜈蚣草的胚胎发育模式图,并讨论了有关分化的作用和意义.
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| 关 键 词： | 蜈蚣草 胚胎 发育 |
Observation on Embryo Development of Pteris vittata |
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| MA Tian-yi,ZONG Qi,ZHANG Ling-xian,CHENG Xin-yu,LIU Bao-dong.Observation on Embryo Development of Pteris vittata[J].Acta Botanica Boreali-Occidentalia Sinica,2010,30(5). |
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| Authors: | MA Tian-yi ZONG Qi ZHANG Ling-xian CHENG Xin-yu LIU Bao-dong |
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| Institution: | MA Tian-yi1,ZONG Qi1,ZHANG Ling-xian1,CHENG Xin-yu1,2,LIU Bao-dong1(1 College of Life Sciences and Technology,Harbin Normal University,Harbin 150025,China,2 Institute of Botany,the Chinese Academy of Sciences,Beijing 100093,China) |
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| Abstract: | Through the method of paraffin,we observed the embryo of Pteris vittata by light microscope.The results showed that P.vittata develops from the zygote.The first three times division of zygote is X-Y-Z type;The earliest tissue differentiated by globular embryo is foot,then the first leaf primitive cell and the first root primitive cell almost differentiates at the same time,subsequently the first leaf primordium and the first root primordium differentiates,after that the stem primordium forms;The stem primor... |
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| Keywords: | Pteris vittata embryo development |
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