The other cells of the tetrad undergo degeneration.
胚囊发育类型为单孢子蓼型胚囊
Microspore abortion occurred after the tetrad formation.
小孢子败育发生在四分体形成以后。
Microtubule bundles in the tetrad cell radiated from the nucleus.
在细胞质存在一个疏松的微管束网络。
Abnormal development was observed at tetrad and mature embryo sac.
在四分体和成熟胚囊时期观察到了异常发育现象。
In tetrad stage, the structures of tapetal cells begin to dissociate.
四分体时期，绒毡层细胞内部结构开始解体。
The sporocytes form tetraspores by meiosis and enter the tetrad phase.
孢子母细胞减数分裂形成四分孢子，进入四分体时期。
There were micronuclei and tetraspores of various types in the tetrad stage.
四分体阶段有微核和不同类型的四分孢子群。
One pair of homologous chromosomes resulting from the division of a tetrad during meiosis.
二分体一对由四分体在成熟分裂过程中形成的同源染色体
Tetrad Phase Diagram applies in the producing of potassium nitride by multiresolving method
四元相图在复分解法制硝酸钾中的应用
Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
大孢子四分体为线形，合点端功能大孢子发育成为蓼型胚囊。
There is only one layer of parietal cells at the stage of sporogenous cell, megaspore mother cell and tetrad.
造孢细胞，大孢子母细胞和四分体时期，周缘细胞仅1层。
Reduced spinor formalism by means of tetrad calculus with application to yang's gravitational field equations.
标架形式的简化旋量体系及其对杨振宁方程的应用
Using tetrad field get spinor field equations of unified gravity and electromagnetic field with spacetime torsion.
利用标架场得到有挠时空的旋时场方程。
Correlation between concurrent malformation of Fallot's tetrad and average facies frontalis of electrocardiological axis
法洛四联症合并畸形与平均额面心电轴的关系
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