欢迎访问《植物研究》杂志官方网站,今天是 分享到:

植物研究 ›› 2007, Vol. 27 ›› Issue (6): 664-668.doi: 10.7525/j.issn.1673-5102.2007.06.005

• 论文 • 上一篇    下一篇

单叶蔓荆小孢子发生和雄配子体的发育

王仲礼;孔冬瑞;王 磊   

  1. 鲁东大学生命科学学院,烟台 264025
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-11-20 发布日期:2007-11-20
  • 通讯作者: 王仲礼
  • 基金资助:
     

Microsporogenesis and Development of Male Gametophyte in Vitex trifolia var. simplicifolia (Verbenaceae)

WANG Zhong-Li;KONG Dong-Rui;WANG Lei   

  1. College of Life Science,Ludong University,Yantai 264025
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-11-20 Published:2007-11-20
  • Contact: WANG Zhong-Li
  • Supported by:
     

摘要: 利用常规石蜡制片法对单叶蔓荆小孢子发生和雄配子体发育进行了详细观察。主要结果如下:(1)花药壁由四层细胞构成,由外到内分别为表皮、药室内壁、中层和绒毡层,花药壁发育方式为双子叶型。(2)花药壁表皮细胞具多细胞腺体。(3)药室内壁和部分药隔细胞具纤维性加厚。(4)绒毡层细胞有两种来源,外周部分来源于初生壁细胞,近药隔部分来源于药隔细胞。绒毡层为分泌型,细胞具双核。(5)小孢子母细胞减数分裂过程中胞质分裂为同时型,形成的四分体主要为四面体型排列,偶有左右对称型。(6)成熟花粉粒为2细胞型,花粉具3孔沟。

关键词: 单叶蔓荆, 小孢子发生, 雄配子体

Abstract: The microsporogenesis and development of male gametophyte of Vitex trifolia var. simplicifolia were observed by means of conventional paraffin sections. The main results are as follows: (1) Anther wall comprises epidermis, fibrous endothecium, one middle layer and glandular tapetum with two-nucleate cells. The development of anther wall belongs to dicotyledonous type. (2)There are multicellular glands on the epidermis of anther. (3) Wall thickening occurs in both endothecium and some cells of connective tissue. (4)The tapetum has dual origin: towards outside the tapetum is derived from the primary parietal layer, whereas on the inner side it develops from the cells of the connective. The tapetum is secretory and two-nucleate. (5)Cytokinesis of microsporocyte meiotic division is of simultaneous,and the tetrads are tetrahedral, occasionally isobilateral. (6) The mature pollen grains are two-celled with three colpates.

Key words: Vitex trifolia var. simplicifolia, microsporogenesis, male gametophyte

中图分类号: