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1·Micronuclei were observed in the tetrad stage.

四分体阶段有微核。

2·This phenomenon occurs in the early tetrad stage.

这个现象在早期四分体阶段出现。

3·The micronuclei were not observed in tetrad stage.

四分体阶段无微核出现。

4·Stability of the complexes shows the Tetrad effect.

配合物稳定性呈“四分组效应”。

5·Microspore abortion occurred after the tetrad formation.

小孢子败育发生在四分体形成以后。

6·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。

7·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。

8·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。

9·At tetrad stage, dyad, triad, tetrad with micronucleus and polyad appeared.

四分体时期出现二分体、三分体、含微核的异常四分体及多分体。

10·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。

四分体

1·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。

2·This phenomenon occurs in the early tetrad stage.

这个现象在早期四分体阶段出现。

3·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。

4·The micronuclei were not observed in tetrad stage.

四分体阶段无微核出现。

5·Micronuclei were observed in the tetrad stage.

四分体阶段有微核。