pollen grain

基本解释

• [植] 花粉粒

英汉例句

双语例句

• Pollen grain is mainly 2-celled type when shed, occasionally 3-celled type, and has three apertures.
  成熟花粉多为2-细胞型，偶见3-细胞型，具三萌发孔。
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• The characteristics of pollen grain are related with the distribution of Gnetum and classified system of subgenus.
  买麻藤属植物孢粉学特征与地理分布及属下分类系统有一定的关系。
• The ubisch bodies which appeared on the inner tangential wall of the tapetum at the time of microspore wall formation are partially remain on the surface of matured pollen grain.
  小孢子壁形成时开始在绒毡层内切线壁出现的球状体到花粉粒成熟时仍有一部分附着于花粉粒表面。

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词组短语

短语

• pollen n grain 花粉粒
• four -flodj pollen-grain 四合花粉粒
• Pollen grain formation stage 花粉粒形成期
• pollen grain of 花粉中造粉
• impotence of pollen grain 花粉粒不育

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专业释义

农业科学

• 花粉粒

  Method Biological characteristics such as the epidermal cells,stomatal apparatus and its distribution,the flowering period,the characteristics of flower,fruit and seed,artificial pollination technology and preservation method of pollen grain were studied by the method of investigation,microscopic observation and satistical analysis.
  方法采用实地考察、显微观察与统计分析的方法对铁皮石斛的表皮细胞、气孔器及其分布、花期进行了调查与分析,并对铁皮石斛花、果实和种子的主要特征、人工授粉方法及花粉粒保存方法进行了研究。

  生物学

• 花粉粒

  At the 2-cell stage, endoplasmic reticulum and mitochondria were still existing in tapetum. Tapetum dismissed completely at the pollen grain maturing stage.
  在2—细胞花粉粒期绒毡层细胞中仍有大量的内质网和线粒体,至花粉粒成熟期绒毡层细胞完全解体。