查询词典 microspore

The main methods that produce doubled haploid lines for barley breeding are Hordeum bulbosum method, anther culture method and microspore culture method.

大麦加倍单倍体立的方法很多，目前在大麦遗传育种中运用较多的主要有球茎大麦法、药培养法和小孢子培养法等三种。

At mononucleus microspore stage,cytoplasm were thick and organella,such as mitochondria,endoplasmic reticulum were abundant.At two\|nucleus and three\|nucleus stage,there were a lot of starch grains.

结果表明，85 EA、89 AR、TA 与恢复系杂交F1 代小孢子发育表现出明显的可育特征：在单核期，细胞质浓，细胞器丰富，线粒体、内质网等十分发达，二核及三核期淀粉粒数量多。

The analysis shows that under heat stress, meiocytes degenerate while tetrad cell dispersion fails at microspore formation phase. During pollen maturation phase, loss of orientation of reproductive cells, abnormal vacuolization of tapetal cells, paramorphia or abortion of anther walls and pollens are observed under heat stress.

结果表明，受高温胁迫后，在小孢子形成阶段，水稻花粉母细胞发育异常、四分体无法适时分散；在花粉粒成熟阶段，水稻生殖细胞失去正确的排列方向、绒毡层细胞发生非正常分解、花药壁和花粉粒发生形态异常并出现败育。

Combining electron microscopy observation with DNA fluoresence detecting technique, it is systematically studied the ultrastructure of microspore, the distribution of plastid and mitochondria and the changes of organelle DNA at different developing stages in Phaseolus vulgaris, Pisum sativum, and Lilium Spec.(L. davidii and L. regale).

基于上述的情况，本研究应用电镜和DNA荧光技术系统研究了菜豆、豌豆及百合属中王百合和兰州百合这些植物种小孢子发育的超微结构，质体和线粒体的分布形式及其DNA的变化情况与遗传的关系，并应用RFLP分析了兰州百合的质体遗传方式，同时对另一种可遗传的细胞器——线粒体的遗传方式也进行了研究。

The temperature affects the sustained time of secondary sporogenous cell split, the sustained time of microspore mother cell, formation speed and regular of male gametophyte.

温度影响次生造孢细胞持续分裂的时间、小孢子母细胞的持续时间及雄配子体的形成速度和整齐度。

Under low temperature condition, fertility restoring, anther developing normally, the tetrads formed after archesporical cell, sporogenous cells and microspore mother cell. Subsequently, microspores were free from the tetrad of fertile anther and formed mature pollen grains, tapetumof the fertile anthers began to disintegrate and disappear at last.

在低温处理条件下，育性恢复，花药发育正常，经过孢原细胞期、造孢细胞期、花粉母细胞期后，可以顺利形成四分体，可育花药的四分体可以释放出小孢子并发育为成熟的花粉粒，同时绒毡层细胞开始解体，最后消失。

In particular during microsporogenesis and microspore development, a lot of specific proteins in staminate flowers vanish, which shows the proteins metabolism is on the decline and staminate flowers turn to death.

尤其是雄花在小孢子发生及发育期间，大量的特异蛋白消失，显示了雄花蛋白质代谢下降并将走向凋亡历程的信息。

The exine of pollen wall of rice was constructedduring microspore development and consisted ofsporopollenin which came from tapetal cells.

探索ATP酶在细胞中的分布状态是研究细胞物质运输和能量代谢的重要手段(Serrano1989；Fedorova等1999)。

Microspore disfunction was closelycorrelated with occurrence of tapetal abnormality.

萝卜胞质大白菜雄性不育系的花药发育从四分体期开始出现异常，绒毡层细胞发生异常膨大。

The results showed that PCD was initiated in the tapetal, chalice, and connective cells during tetrad stage after mitosis of the anther tissue cells; however, anther vascular tissues underwent PCD during microspore mother cell stage.

结果表明绒毡层、环形细胞、药隔组织细胞在减数分裂后四分体时期开始出现PCD，而花药维管束细胞从小孢子母细胞时期就开始出现PCD。

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。