nucellus

nucellus什么意思,nucellus翻译

基本解释

n.: 【植】珠心
网络: 一整团珠心；珠心细胞；胚珠珠心

英汉解释

• 【植物;植物学】珠心

• 球心

词性分析

• 复数：nucelli

例句

• A minute structure in seed plants, containing the embryo sac and surrounded by the nucellus, that develops into a seed after fertilization.

  种子植物的一个小的结构，含有胚囊并被珠心所包围，施肥后长成种子。

• Cell walls were getting thick in nucellus cells near the female gametophyte and polysaccharides accumulated abnormally. 2.

  另外不育系胚珠珠心组织细胞异常加厚，多糖物质出现异常积累。

• The result indicated that the corn is an anatropous ovule, thick nucellus embryo sac.

  结果表明玉米是倒生胚珠，厚珠心胚囊。

• The tube nucleus disintegrates as the pollen tube penetrates the nucellus .

  另外的粉管核会在花粉管穿过珠心时发生分裂。

• integument A layer surrounding the nucellus in the ovules of gymnosperms and angiosperms.

  是裸子植物和被子植物的胚珠中包裹珠心的结构。

• Food materials may be stored in a special tissue derived from the nucellus , called the perisperm.

  营养物质可以贮藏于由珠心产生的一种特殊组织，叫外胚乳。

• In the second year, the resting pollen tube revives its activity in the nucellus towards the March.

  第二年三月，休眠的花粉管在珠心内恢复活动，四月形成二个不等的雄配子。

• Ultrastructural Study of Nucleus Transfer in Nucellus of Pennisetum squamulatum

  非洲狼尾草珠心细胞核穿壁运动超微结构研究