高级检索+
温颖群, 廖景平. 小草蔻胚珠及雌配子体发育的研究[J]. 植物科学学报, 2002, 20(3): 182-184.
引用本文: 温颖群, 廖景平. 小草蔻胚珠及雌配子体发育的研究[J]. 植物科学学报, 2002, 20(3): 182-184.
WEN Ying-Qun, LIAO Jing-Ping. Study on the Development of Ovule and Female Gametophyte in Alpinia henryi[J]. Plant Science Journal, 2002, 20(3): 182-184.
Citation: WEN Ying-Qun, LIAO Jing-Ping. Study on the Development of Ovule and Female Gametophyte in Alpinia henryi[J]. Plant Science Journal, 2002, 20(3): 182-184.

小草蔻胚珠及雌配子体发育的研究

Study on the Development of Ovule and Female Gametophyte in Alpinia henryi

  • 摘要: 小草蔻(AlpiniahenryiK.Schum)胚珠倒生,厚珠心,双珠被.内珠被独自形成珠孔.造孢细胞,大孢子母细胞和四分体时期,周缘细胞仅1层.四分体线形,少数三分体.合点大孢子具功能.成熟胚珠具有珠心冠原和承珠盘结构.胚囊发育属蓼型.成熟胚囊,合点端狭长,形成盲囊.反足核不能构成细胞,是短命的.膜质假种皮的原基从外珠被和珠柄发生.

     

    Abstract: The ovules of Alpinia henryi K.Schum are anatropous,crassinucellate and bitegmic.The inner integument alone forms the micropyle.There is only one layer of parietal cells at the stage of sporogenous cell,megaspore mother cell and tetrad.The tetrads are linear,few triads.The chalazal megaspore is functional.Mature ovule has epistase and hypostase structures.The development of the embryo sac is of the polygonum type.Chalazal end of mature embryo sac is narrow and elongated,it forms a caecum.The antipodal nuclei do not organize into cells,are epheme ral .The initiation of membranous aril primordia from the outer integument and the funicle.

     

/

返回文章
返回