生殖细胞的细胞质

Relation between localization of nucleus and polar distribution of Con A receptors on surface of central cell and egg cell was also studied.

为进一步探讨由生殖细胞到精子的发育过程中细胞质膜表面凝集素受体的可能变化及两个精子的可能差异。

The ultrastructure characters of pollen grain in Brassica napus are:1There are vacuoles in cytoplasm but no starch grain in uniceelluar pollengrain.2The veget- ative nucleus of bicellular pollen grain is generally spheroidal;while the generative cell is spinde-shaped,with a big nucleus,thin layer of cytoplasmand few cell orgens,no cell wall.3In three-celled pollen grain the sperm cell is separated from the cytoplasm of vegetative cell by two layers of plasmic membrances.

Brassica napus的花粉粒，在不同发育时期超微结构的特征如下：1单胞花粉粒有一个球形的细胞核和明显的核仁，细胞质内出现液泡，缺少典型的淀粉粒。2双胞花粉粒的营养核多为球形。生殖细胞纺锤形，无细胞壁，细胞核比例大，细胞质呈薄层，细胞器少。3三胞花粉粒有一个裂片状的营养核和两个纺锤形的精细胞，精细胞无壁，以两层质膜与营养细胞的细胞质相隔。

It is showed that MG132 significantly reduced the germination rate and tube growth. Furthermore, MG132 treatment lead to vacuolization occurred both in tube cytoplasm and generative cell. While DMSO and non-proteasome inhibitor E-64 do not have similar effects. FTIR analysis revealed that MG132 treatment markedly reduced the contents of wall-bound proteins and pectin at the apex of tube.

结果表明：MG132显著抑制青扦花粉萌发和花粉管生长，并导致花粉管形态异常，主要表现为花粉管亚顶端出现液泡化，并且液泡随着培养时间的延长而扩大到整个花粉管，花粉管濒临死亡；而DMSO以及非蛋白酶体抑制剂E-64不产生类似结果；半薄切片结果表明，MG132处理后不仅花粉管细胞质发生液泡化，生殖细胞也发生液泡化；FTIR分析进一步表明，MG132处理后，花粉管顶端的细胞壁蛋白和果胶质含量大幅度下降。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。