tetrads

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网络  四联球菌; 四分体; 四元组; 四体花粉

双语例句

• The results showed that the type of microsporic tetrads of the simple flower is belong to tetrahedral type and the mature pollen is two-celled with bristles on the surface.
  单瓣紫花木槿的小孢子母细胞经过减数分裂形成四面体状的四分体，成熟花粉是二细胞型花粉，圆球型，表面有刺毛。
• Based on this, double exchange of tetrads and centromere mapping are analysed and discussed in detail.
  在此基础上，对双交换四分子的分析和着丝粒作图进行了详细地讨论。
• The results showed that the microspore abortion occurred at the stage of microspore mother cell, tetrads and uninucleate microspore.
  结果表明，小孢子的败育发生在小孢子母细胞时期、四分体时期以及单核小孢子时期。
• The insoluble polysaccharides are at very low level in the MMC, tetrads and functional megaspore stages while RNA and protein are at higher level in all of them.
  大孢子母细胞、大孢子四分体及功能大孢子中含较少不溶性多糖，但却含丰富的RNA和蛋白质。
• The results indicated that the pollen mother cells carried on their meiosis and cytokinesis simultaneously and their tetrads were tetrahedral or decussate types;
  结果表明：花粉母细胞减数分裂的细胞质分裂为同时型，四分体为正四面体型或十字交叉型；
• The shapes and forms of tetrahedral tetrads grains may be described with a new method of polar coordinate that is more exact and more direct than with traditional measurement method of polar axis ( P) and equatorial axis ( E).
  用极坐标法描述四合体花粉的新方法可以表现其饱满度，比较传统上用极轴、赤道轴的长短表现花粉平面大小的方法，更加准确而直观。
• It is not clear whether the abortion of the tetrads stimulates proliferation of the tapetal cells or the proliferating tapetum actually interferes with microspore development, thereby causing degeneration.
  由于绒毡层细胞异常膨大，挤压四分体，四分体不分离产生四分小孢子，从而不能形成正常的花粉粒而导致败育。
• In reproductive organs, much CaMK was found in young embryos and some anther cells such as microspore mother cells, tetrads and tapetum.
  在生殖器官中，有大量钙调素激酶分布于幼胚及花药小孢子母细胞、四分体及绒毡层细胞中；
• Most macrospore tetrads are linear and a few are T-shaped;
  大孢子四分体多数为直线形排列，少数为T字形排列；
• Cytokinesis in the MMC accompanies meiosis and the megaspore tetrads are linear or T-shaped.
  大孢子四分体为直线形或T形排列。