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 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。
• 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；
• 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。
• 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；
• 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。
• The tetrads are linear, few triads.
  四分体线形，少数三分体。
• 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 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；
• 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）。
• 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