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植物研究 ›› 2009, Vol. 29 ›› Issue (6): 681-684.doi: 10.7525/j.issn.1673-5102.2009.06.007

• 论文 • 上一篇    下一篇

核桃楸的胚胎学研究(Ⅰ)——小孢子发生及雄配子体发育

孟颖;王秀华*;王丛红   

  1. (东北林业大学生命科学院,哈尔滨 150040)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-11-20 发布日期:2009-11-20
  • 通讯作者: 王秀华
  • 基金资助:
     

Embryology of Juglans mandshurica Maxim.(Ⅰ) the Microsporogenesis,and the Development of Male Gametophytes

MENG Ying;WANG Xiu-Hua*;WANG Cong-Hong   

  1. (College of Life Science,Northeast Forestry Unversity,Harbin 150040)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-11-20 Published:2009-11-20
  • Contact: WANG Xiu-Hua
  • Supported by:
     

摘要: 通过石蜡制片技术对小孢子的发生和雄配子体发育过程进行了系统的研究。结果表明:花药含有4个花粉囊;花粉囊壁包括表皮、纤维层、中层、绒毡层;花药壁发育属基本型,腺质绒毡层,中层和绒毡层在花粉发育过程中逐渐解体,成熟的花粉囊只保留表皮和纤维层。小孢子母细胞减数分裂中,细胞质分裂是同时型。四分体排列方式为四面体型,四分体解体产生单核花粉粒,成熟花粉为2-细胞型。

关键词: 核桃楸, 小孢子发生, 雄配子体, 发育

Abstract: Microsporogenesis and development of male gametophytes were systenatically studied. Microspore mother cells (pollen mother cells) possess four pollen sacs, the pollen sac includes the epidermis,fibrous layer,middle layer and tapetum.Anther wall development belongs to the basical type.The tapetum belongs to galandular type. Pollen grains middle layer and tapetum dispear gradually during the pollen development.The cytokinesis after meiotic division of PMCs is simultaneous and the microspore arrangement in the tetrad is tetrahedral.Later,terads are divided into to 4 single-cell.Mature pollen is 2-cells type.

Key words: Juglans mandshurica Maxim., microsporogenesis, male gametophyte, development

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