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园艺学报 ›› 2004, Vol. 31 ›› Issue (3): 353-356.

• 研究报告 • 上一篇    下一篇

柿胚胎发生发育的研究

钟云1 ;刘勇2*;蒋侬辉3;刘善军2   

  1. (1广东省农业科学院果树研究所,广州510640;2江西农业大学园艺系,南昌330045;3广东省韶关学院食品系,韶关 512005)
  • 收稿日期:2003-07-28 修回日期:2003-10-14 出版日期:2004-06-25 发布日期:2004-06-25
  • 通讯作者: 刘 勇

Studies on the Embryogenesis of Persimmon

Zhong Yun1;Liu Yong2*;Jiang Nonghui3 ;Liu Shanju2   

  1. ( 1 Institute of Fruit Tree Research,Guangdong Academy of Agricultural Science,Guangzhou 510640,China; 2Horticultural Department of Jiangxi Agricultural University,Nanchang 330045,China; 3 Department of Food Science,Shaoguan College,Shaoguan 512005,China)
  • Received:2003-07-28 Revised:2003-10-14 Online:2004-06-25 Published:2004-06-25

摘要: 以甜柿品种‘卡迟莎’和涩柿品种‘高安方柿’为材料,采用常规石蜡切片法对胚胎发生发
育进行了研究。结果表明:柿胚珠倒生,双珠被,薄珠心,单孢原细胞;大孢子四分体为直线型,仅合点端的一个具功能作用;蓼型胚囊,两个助细胞具角状丝状器,两极核在受精前融合为次生核,3个反足细胞呈“品”字形排列;胚胎发育属于茄型,合子约休眠两周后开始分裂;胚乳为核型,花后3 d开始分裂,在球形胚早期开始形成细胞壁,在子叶形胚期胚乳组织基本形成。在胚胎发生发育的过程中有胚乳退化,合子不分裂等败育现象。

关键词: 柿, 胚胎发育, 胚胎学

Abstract: The embryogenesis of persimmon was mainly studied on the varieties of ‘Kazusa’ and ‘Gaoan Fangshi’.Materials were dehydrated,embedded and cut in Paraffin wax.Th e results were as follows:Th eir ovules Was anatropous,biteguminous and tenuinucellate,archesporium one-celled and functioning directly as the megaspore mother cell.The tetrad ofmegaspores Was linear shaped,with the first cell from the chalazal end being functiona1.The development of the embryo sacs belongs to the ‘polygonum’type.The female gametophyte consists of egg apparatus,central cell and three antipodal cells at the mature embryo sac stage.The filiform apparatus of each synergid was at the micropyle end.The double fertilization belongs to the premitotic type of syngamy.Three antipodal cells were triangularly arrayed.The embryo develops to confornl the‘Solanad’type.Zygote began to divide after anthesis about two weeks.Th e development of endosperm conforms to the nuclear type.The primary endosperm nucleus began to divide 3 days after anthesis.Endosperms began to undergo cellular endosperm stage at the early globular emb ryo stage and almost completed at the cotyledonary emb ryo stage.Many abnorm al phenomena were observed during the development of embryo: Endosperm abortion and the division of zygote did not occur,etc.

Key words: Persimmon, Embryonic development, Embryology

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