查询词典 microspore

The vascular bundle of stem is the type of double phloem. The anther is tetrasporangiate. Simultaneous cytokinesis in the microspore mother cell follows meriosis.

茎的维管束是双韧类型；雄蕊的花药四室，小孢子的形成为同时型胞质分裂，悬垂胎座，倒生胚珠，核型胚乳，果实成熟时胚仍处于球形胚阶段。

In the course of present investigation in interspecific hybrid of Tritical crops, cytomixis mas observed at microspore stage, the present investigation deals with detailed analysis of this phenomenon at different conditions.

作者在麦类远缘杂种的减数分裂过程中发现，在减数分裂Ⅰ的前期和小孢子时期均存在核穿壁的现象，并对各种状态下的穿壁现象进行了详细的观察研究。

The disorganizing sequence of microspore is as follow: firstly, cell membrane dissolved, cytoplasm degenerated and became thiner; then, nuclear membrane dissolved, nuclear degenerated, and the last was nucleolus.

小孢子细胞解体顺序为：细胞膜首先断裂，细胞质分解变稀薄，然后是核膜断裂，细胞核降解，细胞质及细胞核降解物质充满整个药室，最后核仁解体。

It was suggested that one of the radical reasons resulting in microspore abortion of alloplasms was the disorder between nucleus and cytoplasm, which caused unbalance of enzymatic metabolism, decrease of activities of SOD and CAT, and damage of membrane systems led by accumulated active oxygen.

异质系核质关系不协调，酶代谢失调，SOD、CAT活性下降，活性氧积累导致膜系统损伤，可能是异质系花粉败育的根本原因之一。

Further examination by scanning electron microscopy indicates that the mutant microspore exine is aberrant and broken.

扫描电镜结果显示，突变体花药中小孢子外壁异常、破裂。

CaM may be involved in regulating suchevents as microspore development, pollen germination, pollen tube growth,fertilization, and substance transport during sexual plant reproduction through〓/CaM -mediated signaling pathways.

钙调素可能通过〓／CaM信号传递途径调节小孢子发育、花粉萌发、花粉管生长、受精以及物质运输等生理过程。

In the isolated microspore culture, part of microspores were swelled and few could develop into tetrads and died after 1 week..

在游离小孢子培养过程中，仅发现部分小孢子膨大，极少数能继续分化成四分体，1周后则被降解。

Results showed that the pollen abortion of female flowers occurred at the meiosis stage of microspore caused by the unnormal tetrads with uncomplete formation of cell plate.

该文以美国肥皂荚雌雄株上不同发育时期花蕾或花为试材，从实体解剖和组织细胞学角度对其性别分化过程进行了比较系统的研究。

Donor maize plants grown in the fields was used as experimental materials, study of technique optimization was made mainly for improving freq. of microspore survival and ELS formation.

以大田种植的玉米供体植株为实验材料，以提高游离小孢子存活率及成胚率为重点进行了技术优化研究。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。