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

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