---

作 者 ：曾志将 颜伟玉 王开发

期 刊 ：植物学通报 2002年 19卷 04期 页码：488-490

关键词：花粉；元素分布；

摘 要 ：以油菜和玉米花粉为材料，应用扫描电镜及能谱仪技术对花粉中内外元素分布进行了初步研究。结果表明：花粉粒萌发沟区与非萌发沟区，花粉壁与原生质内外的不同部位，Fe、Zn、Si、Al、Ca、P、S、Mg、K、Cl、Cu、Mn、Co及Ni 14种元素组成有很大差异；两种花粉的萌发沟区都未检测出Fe元素，而非萌发沟区的Fe元素相对含量为1.12%～368%；花粉壁中比花粉原生质中更富含Si,Ca,K,Cl等元素。本项研究为蜜源植物花粉的开发和利用提供了有价值的资料。

Abstract:The experiments were conducted with pollen grains of rape and maize, the element distribution in internal and external parts of pollen grains obtained by scanning electron microscope and energy dispersive X_ray analysis indicated that the composition of 14 elements such as Fe、Zn、Si、Al、Ca、P、S、Mg、K、Cl、Cu、Mn、Co and Ni differed greatly in different positions of the pollen grains. The Fe could not be detected in germinant colpus area of the two kinds of pollen, but t he relative contents of Fe in non_germinant colpus area was 1.12%～3.68%. The contents of Si, Ca, K, Cl etc. in the pollen wall were more than in pollen protoplasm. This paper provided an information for utilization and exploitation of nectariferious plants pollen.

---