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 meiosis behavior of pollen mother cell of sterile plant was normal and tetrads were formed. However degradation of tetrad callose wall was abnormal.
  不育株花粉母细胞减数分裂过程基本正常，可形成四分体，但四分体胼胝质壁不能适时解体，小孢子或于胼胝质壁内彻底败育解体，或发育至单核中期败育；
• 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。
• Cytological analysis showed a large number of abnormal tetrads in mutant anther, especially hexads, pentads and irregular tetrads, which indicated abnormalities in meiosis.
  细胞学观察发现突变体的花药中形成大量异常的四分体，特别是六分体、五分体和不规则的四分体，这表明突变体的减数分裂可能出现问题。
• 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。
• The tetrads are linear, few triads.
  四分体线形，少数三分体。
• 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；
• 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。
• 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。
• Hypertrophy and hyperplasia of tapetum at tetrads stage were related to pollen abortion.
  四分体时期绒毡层肥大增厚可能与花粉败育有关。
• Some microspore tetrads which conglutinated with each other formed complex microspore tetrads on white cucumber.
  白皮黄瓜部分小孢子四分体之间相互粘连在一起，相互粘连的胼胝质壁水解形成复合小孢子四分体；