| 卡特兰雌配子的发育 |
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| 引用本文： | 郑宝强,王雁,郭欣.卡特兰雌配子的发育[J].林业科学研究,2015,28(4):497-501. |
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| 作者姓名： | 郑宝强 王雁 郭欣 |
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| 作者单位： | 中国林业科学研究院林业研究所, 国家林业局林木培育重点实验室, 北京 100091;中国林业科学研究院林业研究所, 国家林业局林木培育重点实验室, 北京 100091;中国林业科学研究院林业研究所, 国家林业局林木培育重点实验室, 北京 100091 |
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| 基金项目： | 中央级公益性科研院所专项 (CAFYBB2012014);北京市园林绿化局计划项目(Y1HH200900304) |
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| 摘 要： | 采用石蜡切片法观察了卡特兰雌配子的发育过程。结果表明:卡特兰在授粉前,胎座和胚珠并没有开始发育;在成功授粉后,胚珠原基开始发育;卡特兰的胚珠为倒生型,具薄珠心和2层珠被,成熟胚囊为8核;从授粉到胚囊成熟需要112 d左右;外珠被的过早发育可能是造成胚败育的原因之一。
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| 关 键 词： | 卡特兰 雌配子 发育 |
| 收稿时间： | 2014/8/29 0:00:00 |
Female Gametophyte Development in Cattleya |
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| ZHENG Bao-qiang,WANG Yan and GUO Xin.Female Gametophyte Development in Cattleya[J].Forest Research,2015,28(4):497-501. |
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| Authors: | ZHENG Bao-qiang WANG Yan and GUO Xin |
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| Institution: | Research Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China;Research Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China;Research Institute of Forestry, Chinese Academy of Forestry, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China |
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| Abstract: | The female gametophyte development in Cattleya was studied by the method of paraffin cut. The results showed that the placental growth and ovule development did not initiate until pollination. After successful pollination, the ovule primordium begins to grow. The ovule is anatropous with 2 integuments and one-layered nucellus around the megaspore mother cel1. The mature embryo sac consists of 8 nuclei. The interval between pollination and the mature embryo sac is about l12 days. The advanced development of out integument might be a reason causing the abortion of embryo. |
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| Keywords: | Cattleya female gametophyte development |
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