| 摘要: |
| 从细胞学方面研究了K型小麦雄性不育系助细胞的无配子生殖。结果表明，在延迟授粉子房的胚囊中，助细胞之一首先体积增大，细胞质变浓，核及核仁也增大，接着进入有丝分裂，第一次分裂后形成二细胞原胚，发育为各种不同类型的球形胚；球形胚再发育为梨形胚；梨形胚再发育为分化期胚，最后形成成熟胚，卵细胞孤雄生殖频率很低，过程与助细胞无配子生殖相似。 |
| 关键词: 助细胞，单倍体胚，无配子生殖，胚囊，小麦 |
| DOI： |
| 分类号:S512.103 |
| 基金项目:国家自然科学基金资助项目 |
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| Studies on The Cytology of The Synergid Apoganmy by Ae.Kotschyi Cytoplasm Male一Sterile in Common Wheat |
|
Sun Shangying Yang Tianzhang
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| Abstract: |
| This paper studiyes on the cytology of the synergid apogamy by Ae.kotschyi cytoplasm male-sterile in common wheat.The results are as follows:One of the two synergids in the embryo-sac, under the condition of delayed-pollination and nonpollination,Its volume increased first,the cytoplasm got thicker,the vacuole disapered,the nucleus and nucleolus increased too,thenit got into the mitosis stage so as so from two cells proembryo and develop in various irregular types such as global embryo,pear-shaped embryo and differentiation stage embryo,and finally,it became muture embryo. The frequency of the egg-cell partherogenesis is minimum,and its developing process is similar to the synergid apogamy. |
| Key words: synergid,appogamy,haploid,embryo-sac,wheat |
