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植物研究 ›› 1987, Vol. 7 ›› Issue (2): 17-26.

• 论文 • 上一篇    下一篇

后蕊苣苔属的花粉形态

席以珍   

  1. 中国科学院植物研究所, 北京
  • 出版日期:1987-06-15 发布日期:2016-06-13

POLLEN MORPHOLOGY OF OPITHANDRA BURTT(GESNERIACEAE)

Xi Yi-zhen   

  1. Institute of Botany, Academia Sinica, Beijing
  • Online:1987-06-15 Published:2016-06-13

摘要: 本文用光学显微镜和扫描电子显微镜系统观察了苦苣苔科后蕊苣苔属的花粉形态,本属花粉粒为近球形,稍长或稍扁,具三拟孔沟,个别种具四拟孔沟的萌发孔类型,外壁表面具网状纹饰,网脊光滑或具小刺。根据网脊宽度。网眼形状以及网纹明显程度而将本属花粉分为三个类群.1.网脊较宽,宽度不均匀,网脊宽度大于网眼直径,包括的植物种类有Opithandra sinohenryi,O.primoloidesO.fargesii等三种;2.网脊较窄,宽度均匀,包括的种类是O.dalzielii,O.obtusidentata,O.dinghushnnensisO.cinerea等4种;3.网不明显,小刺突出,具这种纹饰的植物只有O.acaulis一种。

Abstract: Pollen morphology of Opithandra Burtt has been examined with LM and SEM. The pollen grains suhsphercidal, slightly long. and oblate, 3-colporoidate (most species). and 4-colporoidate(only one species, Opithandra primuloides). Exine reticulate, muri smooth or spinulate. According to width and clear degree of muri, and shape of lumina, pollen grains of this genus may be divided into three groups as follows. 1. Primuloides group including O. sinohenryi, O. primuloides and O. fargesii:muri wide, smooth, width of muri uneven. 2. Dalzielii group including O. dalzielii, O. obtusidentata, O.dinghushanensis and O. cinerea:muri narrow, smooth or with spinules. 3. Acaulis group with only one species, i. e. O. acaulis:reticulation obscure, and spinulate ornamentation distinct.