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植物研究 ›› 2001, Vol. 21 ›› Issue (4): 561-566.

• 论文 • 上一篇    下一篇

八角莲小孢子发生和雄配子形成

黄衡宇1, 马绍宾2, 李鹂1   

  1. 1. 湖南吉首大学生物系, 吉首 416000;
    2. 云南大学生物系, 昆明 650091
  • 收稿日期:2001-05-16 出版日期:2001-12-15 发布日期:2016-06-14
  • 作者简介:黄衡宇, 男, 29 岁, 硕士, 讲师, 主要从事植物胚胎学研究。
  • 基金资助:
    国家自然科学基金资助项目;云南省基础应用基金资助项目。

THE GENESIS OF MICROSPORE AND THE FORMATION OF MALE GAMETOPHYTE IN DYSOSMA VERSIPELLIS(HANCE)M.CHENG

HUANG Heng-yu1, MA Shao-bin2, LI Li1   

  1. 1. The Biology Department of Jishou University, Jishou 416000;
    2. The Biology Department of Yunnan University, Kunming 650091
  • Received:2001-05-16 Online:2001-12-15 Published:2016-06-14
  • Supported by:
    Supported by National Natural Science Foundation of China (No.39860022);Supported by Basic & Appli cation Foundation of Yunnan (No.98C002Q)

摘要: 首次报道了八角莲(Dysosma versipell is (Hance)M.cheng)小孢子发生和雄配子体形成的过程。主要结果如下:花药四室, 药壁发育方式为双子叶型;药室内壁有带状加厚现象;二层绒毡层细胞, 多具双核, 腺质;多孢原, 发生于表皮下;小孢子母细胞减数分裂时的胞质分裂为同时型, 少数小孢子母细胞减数分裂Ⅰ 完成后, 在两子核间形成一异型沟, 使其具类似二分体的结构;四分孢子多为四面体形, 少数为左右对称形、十字交叉形、直线形及"T"形;成熟花粉粒为二细胞, 呈圆形, 具三孔沟。

关键词: 八角莲, 小孢子, 雄配子体

Abstract: The present paper firstly reports the microsporogenesis and the formation of male gametophyte in Dysosma versipellis(Hance) M.cheng. The main results can be concluded as follows:The anther is tetrasporangiate and its wall develops conforming to the dicotyledonous type. The endothecium develops fibular thickenings. The tapetum is of the glandular type, of two cell nuclei. The cytokinesis of the microspore mother cell in meiosis is of the simultaneous type. A few partition of microspore mother cells have heterotypicfurrow between the two nuclei after the end of meiosisⅠthereby forming a structure which like dyad. Most of the microspore tetrads are tetrahedral and there are still a few other types, such as isobilateral, dilateral, linear and "T'shape. Microspores have various types of abortive to development. Mature pollen grain is of the 2-celled type and has three colpates.

Key words: Dysosma versipellis(Hance) M.cheng, microspore, male gametophyte