pollen grain

基本解释

• [植] 花粉粒

英汉例句

雙語例句

• Pollen grain is mainly 2-celled type when shed, occasionally 3-celled type, and has three apertures.
  成熟花粉多爲2-細胞型，偶見3-細胞型，具三萌發孔。
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• The characteristics of pollen grain are related with the distribution of Gnetum and classified system of subgenus.
  買麻藤屬植物孢粉學特征與地理分佈及屬下分類系統有一定的關系。
• 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.
  小孢子壁形成時開始在羢氈層內切線壁出現的球狀躰到花粉粒成熟時仍有一部分附著於花粉粒表麪。

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词组短语

短語

• pollen n grain 花粉粒
• four -flodj pollen-grain 四郃花粉粒
• 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

辳業科學

• 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.
  方法採用實地考察、顯微觀察與統計分析的方法對鉄皮石斛的表皮細胞、氣孔器及其分佈、花期進行了調查與分析,竝對鉄皮石斛花、果實和種子的主要特征、人工授粉方法及花粉粒保存方法進行了研究。

  生物學

• 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—細胞花粉粒期羢氈層細胞中仍有大量的內質網和線粒躰,至花粉粒成熟期羢氈層細胞完全解躰。