tetrad

英

美

网络  四分体; 四联球菌; 四联体; 四分子; 四分孢子

复数：tetrads　

计算机

英英释义

noun

• the cardinal number that is the sum of three and one
  Synonym:four4IVquaternquaternionquaternaryquaternityquartetquadrupletfoursomeLittle Joe

双语例句

• This phenomenon occurs in the early tetrad stage.
  这个现象在早期四分体阶段出现。
• The characteristics of tetrad was that the nucleus and Golgi bodies being in the active state.
  四分孢子的显著特征是细胞核和高尔基体呈活跃状态。
• The tetrad analysis of some hybrids led the discovery of two complementary genes systems.
  通过四分体分析发现一些杂种有两种互补基因系。
• Pollen abortion of MS-4 was in the single nucleus pollen grain stage after the division of microspore tetrad.
  MS-4花粉败育的时期，是在小孢子四分体分开至单核花粉粒时期。
• From tetrad stage to microspore stage, the ABA content in sterile buds was higher than fertile buds.
  四分体到小孢子单核期和小孢子二核后期至成熟花粉期不育花蕾ABA含量仍高于可育花蕾。
• At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.
  此时每条染色体由一对染色单体构成，这两条联合的染色体称为四分体。
• It appears however that the formation of megaspore tetrad associated with the high GA3/ ZT ratio.
  高水平的ZT/IAA有利于大孢子母细胞和花粉粒的形成，而大孢子四分体的形成则需要高的GA3/ZT比值。
• The megaspore mother cell undergoing meiotic divisions produces a T-shaped, or, rarely, linear tetrad.
  大孢子母细胞减数分裂产生T形四分体和少数线形四分体。
• In the course of the embryonic development, after the microspore tetrad is formed, although some forms of the microspore were under developed, and lose of protoplasm, but some have formed normal microspore.
  在胚胎发育过程中，小孢子四分体形成后，虽然出现有些小孢子形状不规则，原生质少或无等现象，但也有发育正常的花粉粒。
• At both tetrad and pollen mother cell stages, the amount of polysaccharides in pollen cells of male sterility line was slightly higher than that of its maintainer lines.
  在花粉母细胞和四分体时期，不育系细胞中多糖物质的含量稍高于保持系细胞中的含量，但它们之间差异不显著。