以下为句子列表：
英文: The haploid pollen cells develop in the tapetal zone from spore mother cells.
中文: 单倍体花粉细胞由绒毡层提供营养发育。
更详细...
英文: The ultrastructural changes of microspore mother cells and tapetal cells in anthers during the abortion of male sterile cotton Kang Awere observed by comparing with its maintainer Kang Band by using transmission electron microscopy.
中文: 摘要以棉花细胞质雄性不育系“抗A”为材料，以其同核异质保持系“抗B”为对照，用透射电子显微镜技术，观察了不育系败育过程中小抱子母细胞与绒毡层细胞超微结构的变化。
更详细...
英文: When microspore mother cell (MMC) preparing meiosis, calcium precipitates appeared in the cytoplasm of tapetal cells and callus wall surrounding MMC.
中文: 当花粉母细胞进行减数分裂时，花药中的钙颗粒进一步增加，尤其是在小孢子母细胞的胼胝质壁中。
更详细...
英文: The upstream regulatory region of the tapetal specific gene A9 was amplified from Arabidopsis thaliana genome by polymerase chain reaction and cloned into HincⅡ and KpnⅠ site of pUC18.
中文: 以拟南芥菜 ( Arabidopsis thaliana)基因组 DNA为模板 ,通过 PCR扩增得到绒毡层特异表达基因 A9的启动子片段 ,克隆到 p UC18载体上。
更详细...
英文: The results of investigations show that there is no notable differences in the development of the tapetal cells and pollen walls between bisexual and unisexual flowers. But the intine of the pollen grain is thicker.
中文: 果表明,两种不同类型的花粉在绒毡层和细胞壁的发育方面没有明显差别,但两性花的花粉内壁较厚,细胞器和淀粉的贮存明显不足,且缺乏蔗糖等化合物,氨基酸的种类也较可育花粉少.
更详细...
|
