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植物研究 ›› 1995, Vol. 15 ›› Issue (4): 536-538.

• 论文 • 上一篇    下一篇

水曲柳大孢子发生及雌配子体发育的研究

王秀华1, 魏春茹1, 刘红2   

  1. 1. 东北林业大学, 黑龙江, 哈尔滨 150040;
    2. 黑龙江哈尔滨园林管理局, 黑龙江, 哈尔滨 150010
  • 收稿日期:1995-03-01 出版日期:1995-12-15 发布日期:2016-06-14

STUDIES ON MEGASPOROGENESIS AND THE DEVELOPMENT OF FEMALE GAMETOPHYTE IN FRAXINUS MANDSHURICA

Wang Xiu-hua1, Wei Chun-ru1, Liu hong2   

  1. 1. Northeast Forestry University, Harbin 150040, Heilongjiang;
    2. Landscape Management Bureau Harbin, 150010 Heilonajiang
  • Received:1995-03-01 Online:1995-12-15 Published:2016-06-14

摘要: 水曲柳(Fraxinus mandshuica Rupr.)子房为二心皮;二室, 中轴胎座, 每室内具二个倒生胚珠, 薄珠心, 单珠被。单个孢原细胞分化于珠心顶端表皮之下, 直接发育成为大孢子母细胞, 大孢子四分体为直线形, 通常为合点端第一大孢子具功能, 胆囊发育为蓼型。

关键词: 水曲柳, 大孢子发生, 雌配子体

Abstract: The ovary is twicarpellm, twilocular with two ovules each loculus. The ovuleis unitegmic, tenuinucellar, and anatropous. The embryo sacoriginates from thesingle-archesporial. Usually the chalazal megaspore is the functional one. Thedevelopment of embryo sac is of the Polygoum type. The polar nuclei fuse beforefertilization, and antipodals are ephemeral.

Key words: Fraxinus mandshurica, Megasporogenesis, Female gametophyte