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
英英释义
noun
- the cardinal number that is the sum of three and one
双语例句
- The merit of viewing the four as a tetrad rather than selecting only three to form a triangle is that it gives greater prominence to quality.
把这四个变量看成是四元的而不是选出三个组合成三角形,它的优点在于:它给质量上带来了很多显著的帮助。 - 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。 - Microspore abortion occured after the tetrad formation.
小孢子败育发生在四分体形成以后。 - 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。 - 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。 - 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。 - Otherwise, the chromosome morphology involving Haynaldia chromatin was observed at preleptotene I, and the frequencies of chromatin nucleus at tetrad stage and at microspore stage were investigated.
此外,观察了前期I的簇毛麦染色体形态,统计了四分体和小孢子中小麦和簇毛麦染色质微核频率。 - Callose exists mainly in transverse walls during dyad, triad and tetrad stages, a little in side walls.
二分体、三分体、四分体时期,胼胝质荧光主要存在于大孢子之间的横壁上,侧壁内胼胝质荧光较弱。 - The abnormality of tetrad callose wall degradation and tapetum development was associated with the abortion of microspore.
导致小孢子败育的原因与四分体胼胝质壁不适时解体和绒毡层细胞发育异常、延迟解体有关。 - 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。