• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

余甘花粉形态观察

An Observation on the Pollen Morphology of Amla (Phyllanthus emblica L.)

  • 摘要: 对余甘16个品种的花粉进行了光学显微镜和扫描电镜观察。余甘花粉粒为球形,平均轴径17.82—21.19μm,以4、5孔沟为主,花粉粒表面具有网状纹饰。不同品种的花粉粒大小有极显著差异,而且与果实大小之间有中度正相关(r=0.8269),表面纹饰特征也有一定差别。这些差别可作为品种鉴别的参考。余甘花粉粒的孔沟类型,不论是种内还是品种内,都具有多样性,这也反映出其所属的大戟科及叶下珠属花粉多类型的特点;余甘品种间花粉粒形态的差异尚无明显的类群之分,与地理位置不同也无密切联系,这似乎表明,各品种的系统发育过程仍处于半野生的大致相同的水平。

     

    Abstract: The morphological characteristics of pollen grains in 16 varieties of amla (Phyllanthus emblica L.)are examined by optical microscope and SEM. The pollen grains of amla are spherical. The mean axis diameter is 17. 82 ?21. 19μm. The colporate number in pollen grains is mostly 4-5. The net-like sculptures exist on the exine of pollen grains. Among different amia varieties, there are very significant differences in pollen size which has moderately positive correlation with fruit size (r = 0. 8269) and some differences of the exine sculpture are also found. These differences may be taken into account for references in the variety identification. Regardless of interspecific or intervarietal levels, the colporate types of pollen grains are diversified , which reflects the polymorphous character of pollen grains in the family Euphorbiaceae and the genus Phyllanthus Linn. There is no clear distinction for grouping the intervarietal differences of amla pollen morphology as yet and no close relation with the geographic distribution. It seems that the systemic development of different amla varieties is still located at the nearly same level of seminatural condition.

     

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