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林业科学 ›› 2013, Vol. 49 ›› Issue (8): 168-175.doi: 10.11707/j.1001-7488.20130824

• 研究简报 • 上一篇    下一篇

异叶苦竹大小孢子及雌雄配子体的发育

林树燕, 丁雨龙   

  1. 南京林业大学竹类研究所 南京 210037
  • 收稿日期:2012-12-21 修回日期:2013-04-25 出版日期:2013-08-25 发布日期:2013-08-17
  • 通讯作者: Ding Yulong
  • 基金资助:

    supported by National Natural Science Foundation of China (31000294).

Observations on Megasporogenesis, Microsporogenesis and Development of the Male and Female Gametophytes of Arundinaria simonii f. heterophylla

Lin Shuyan, Ding Yulong   

  1. Bamboo Research Institute, Nanjing Forestry University Nanjing 210037
  • Received:2012-12-21 Revised:2013-04-25 Online:2013-08-25 Published:2013-08-17

关键词: 小孢子发生, 大孢子发生, 异叶苦竹

Abstract:

Embryological characters of Arundinaria simonii f. heterophylla were reported in this article. The anthers were tetrasporangiate in which the cytokinesis of microsporocyte in meiosis was successive type and the produced microspore tetrads were bilaterally symmetrical. The cells of tapetum layer with dense cytoplasm were secretory type, and they began to degenerate during meiosis division. The mature pollen was trinucleate. The single ovule with parietal placenta was anatropous, double integument and tenuinucellatae. The development of the embryo sac was polygonum type. Generally the florets close to the base of spikelets bloomed earlier than others, and development of both stamens and pistils within a spikelet was synchronized.

Key words: microsporogenesis, megasporogenesis, Arundinaria simonii f. heterophylla

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