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 tetrads are linear, few triads.
  四分体线形，少数三分体。
• Predominant linear and a few "T"-shaped megaspore tetrads with chalazal functional one; The first one towards the chalazal end of four megaspores that are arranged in one row is functional.
  少数为T字形排列，合点端大孢子有功能；直线形大孢子四分体，合点端大孢子有功能，三次核分裂的单孢子胚囊类型（蓼型）。
• 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。
• 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。
• Cytological observation on the transgenic plants indicated that abortion of microspore development occurred at the stages of from tetrads to uninucleate.
  通过对转基因植株进行细胞学染色、切片观察等方法，显示转基因后代小孢子败育发生在四分体到单核期。
• 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；
• Ultrastructure and development of the microspore in Cunninghamia lanceolata ( lamb.) hook& ⅱ. tetrads, microspore, and tapetum
  杉木小孢子发育过程中细胞的超微结构&Ⅱ.四分体、小孢子、绒毡层
• 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；
• 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；
• 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。