绒

The tapetum cell of normal anther begin to disintegrate after the formation of tetrad.

正常花药的绒毡层细胞在四分孢子形成之后开始解体。

We found a special kind of multimembrane net structure in Pelargonuim hortorum tapetum.

在天竺葵绒毡层中我们发现了一种特殊的复膜网格结构（Multymenbrane Net Struc-ture，简称MNS）。

The BcPW1 gene can act on the signal transmission between a tapetum and pollen during the development process of a cell wall.

BcPW1基因可能作用于细胞壁发育过程中绒毡层与花粉的信号传递过程。

With nuclear sclerosis, a reflection from the tapetum will be seen, while a cataract will block reflection.

晶状体核硬化的犬只在收到电筒照射时绒毡层的反射光可见，而白内障患犬则无光反射。

Histological study indicated that low temperature inhibited microspore formation and caused abnormal multiplication of tapetum layer cells.

经切片观察，低温会造成绒毡层细胞的异常增殖，及产生多核性巨大小孢子，而阻止小孢子发育。

The results showed that the cell wall organization during anther development failed to divide into inner-wall, middle and tapetum normally, and not to provide material, energy and information transfer for the development of pollen mother cells, resulting in the occurrence of abnormal pollen mother cells separatist period; thus which could not form a normal pollen grains which led to abortion.

结果表明，不育花药壁组织在发育过程中，没有分化形成正常的内壁、中层及绒毡层，不能为花粉母细胞的发育提供物质、能量和信息的传递，造成花粉母细胞在减数分裂期发生异常，不能形成正常的四分体，因而未能形成正常的花粉粒而导致败育。

During male and female reproduction organ developments, CBKs were expressed obviously in temporal and spatial difference manners, especially in pollen development, tapetum cell development and degeneration and ovule development.

这种差异性突出体现在花粉细胞的发育、绒毡层细胞的发育和凋亡以及胚珠的发育等过程中。

The tapetum cells oftrisomic 7 and 10 showed abnormal phenomenon at meiosis,but trisomic 7 recovered normality at other periods.

而10号三体的绒毡层虽在四分体时期表现正常，但在小孢子时期又表现了异常，并且花粉全部败育。

With tobacco genomic DNA as templates, through the PCR amplification GenBank and tobacco tapetum of cell-specific promoter agreement TA29 fragments of the purpose 1500bp long.

以烟草基因组DNA 为模板，通过PCR 扩增得到与GenBank中烟草绒毡层特异性启动子TA29片段一致的长约1500bp的目的片段。

The carbon isotope composition of single alkanes (δ13Cia) in two plants (Leontopodium leontopodioidies and Taraxacum mongolicum ) growing in the northeastern Qinghai-Tibet plateau was analyzed by means of GC-IMS in order to know its relationship with altitude,and furthemore, to gain new data for the research on climatic changes.

用色谱—同位素质谱仪对青藏高原东北部高寒草甸生态系统中的两种高等植物—火绒草和蒲公英的烷烃进行分析，讨论环境因素对植物单体烷烃碳同位素组成（δ13Cia）的影响。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。