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银杉的雄配子体

王伏雄, 陈祖铿   

  1.  (中国科学院植物研究所,北京)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1986-12-18 发布日期:1986-12-18
  • 通讯作者: 王伏雄

Male Gametophyte of Cathaya

Wang Fu-Hsiung, Chen Zu-Keng   

  1. (Institute of Botany, Academia Sinica, Beijing)
  • Received:1900-01-01 Revised:1900-01-01 Online:1986-12-18 Published:1986-12-18
  • Contact: Wang Fu-Hsiung

摘要:

银杉具2个原叶细胞,但其形成与松科其他属不同,先切出1个初生原叶细胞,这个细
  胞再分裂1次,产生第二个次生原叶细胞; 花粉成熟时原叶细胞不退化,散粉时为3个细胞。传
  粉与受精的间隔时间为13个月左右。2个精子大小不等。

关键词: 银杉, 雄配子体

Abstract:

There are two prothallial cells in Cathaya, but their formation is different from
that of the other genera of Pinaceae.  A primary prothallial cell is cut off first and the division
of this cell gives rise to 2 prothallial cells which remain intact in mature pollen grains. 3-celled
pollen grains are formed.  The interval between polination and fertilization is about 13 mon-
ths.  The two sperms are different in size.

Key words: Cathaya, male gametophyte