| 樟子松受精作用和原胚的选择 |
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| 引用本文： | 田成玉,李春英,赵春建,祖元刚.樟子松受精作用和原胚的选择[J].植物研究,2007,27(1):34-37. |
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| 作者姓名： | 田成玉 李春英 赵春建 祖元刚 |
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| 作者单位： | [1]东北林业大学森林植物生态学教育部重点实验室,哈尔滨150040 [2]黑龙江省烟草专卖局,哈尔滨150001 |
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| 摘 要： | 樟子松发育成熟的雄配子体中的精子6月15日左右在颈卵器中上部与卵细胞结合，进行受精作用，其后，受精卵进行游离核分裂，形成8个子核时，开始形成细胞壁。它们再分裂1次，形成16个细胞的原胚。接着胚柄细胞层迅速生长、伸长，把下面的原胚送出颈卵器基部的细胞壁，进入胚乳中的溶蚀腔。原胚吸收溶蚀腔中的营养，生长发育。初期，胚的数目往往很多，但常常只有1个发育成熟。
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| 关 键 词： | 樟子松 受精作用 胚 胚乳 发育 |
| 修稿时间： | 2005-10-15 |
The Fertilization and Proembryo Choose of Pinus sylvestris var. mongolica |
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| TIAN Cheng-Yu,LI Chun-Ying,ZHAO Chun-Jian,ZU Yuan-Gang.The Fertilization and Proembryo Choose of Pinus sylvestris var. mongolica[J].Bulletin of Botanical Research,2007,27(1):34-37. |
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| Authors: | TIAN Cheng-Yu LI Chun-Ying ZHAO Chun-Jian ZU Yuan-Gang |
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| Institution: | 1. Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040;2. Tobacco Regie of Hei Longjiang Province, Harbin 150001 |
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| Abstract: | The fertilization was processed by sperm in mature male gametophyte combining with egg cell on the top of archegonia on June 15 or so. Then fertilized egg made division of free nuclei and cell wall was began to form while 8 daughter nucleus forming. When they were divided again, proembryo containing 16 cells was formed. In succession, cell layer of suspensor rapidly grew, elongated and down proembryo was carried away cell wall of archegonial base, then get into corrosion cavity in endosperm. Proembryo absorbed nutrition in corrosion cavity and grew, developed. In the first stage, the number of embryoes were very much, but only one developed to mature as usual. |
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| Keywords: | Pinus sylvestris var mongolica fertilization embryo endosperm development |
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