ektexine

简明释义

英[ekˈteksɪn]美[ekˈteksɪn]

n. 外表层；外壁

英英释义

单词用法

同义词

反义词

例句

1.The heat exchanged by nature convection between cylinder ektexine and air was equivalent to that from the holes on plastic cylinder.

筒外壁与温室空气间的自然对流换热量和塑料筒放热孔与室内空气的换热量相当。

2.The heat exchanged by nature convection between cylinder ektexine and air was equivalent to that from the holes on plastic cylinder.

筒外壁与温室空气间的自然对流换热量和塑料筒放热孔与室内空气的换热量相当。

3.In botany, the ektexine plays a crucial role in protecting the genetic material inside the pollen.

在植物学中，ektexine在保护花粉内的遗传物质方面起着至关重要的作用。

4.Researchers studied the ektexine composition to understand how it affects pollen viability.

研究人员研究了ektexine的成分，以了解其如何影响花粉的活力。

5.During the examination, the scientists noted the thickness of the ektexine layer.

在检查过程中，科学家注意到了ektexine层的厚度。

6.The ektexine can vary significantly between different species of plants.

不同植物种类之间的ektexine可以有显著差异。

7.The structure of the pollen grain is composed of a tough outer layer known as ektexine.

花粉粒的结构由一个称为ektexine的坚固外层组成。

作文

The study of pollen and its components is crucial for understanding plant biology and ecology. One of the key structures in pollen grains is the outer layer known as ektexine, which plays a significant role in protecting the pollen from environmental stresses. The ektexine is composed of various materials, primarily sporopollenin, which is highly resistant to degradation. This resilience allows pollen grains to survive for extended periods, even under harsh conditions. In botanical research, scientists often focus on the ektexine when examining the evolutionary adaptations of flowering plants. The thickness and texture of the ektexine can vary significantly among different species, providing insights into their reproductive strategies and ecological niches. For example, some plants have developed a thicker ektexine to withstand extreme weather conditions, while others may have a more delicate structure that facilitates easier pollen dispersal by wind or insects.Moreover, the ektexine is not just a protective barrier; it also plays a role in the interaction between pollen and the stigma of flowers during fertilization. The surface characteristics of the ektexine can influence pollen germination and the successful transfer of genetic material. Thus, understanding the properties of the ektexine can help researchers develop better methods for pollination management in agriculture, ensuring higher crop yields and food security.In addition to its biological functions, the ektexine has applications in paleobotany, where fossilized pollen grains provide valuable information about past climates and ecosystems. By analyzing the ektexine of ancient pollen, scientists can reconstruct historical vegetation patterns and gain insights into how climate change has influenced plant evolution over millions of years.Overall, the ektexine is a fascinating topic within the field of botany, linking various disciplines such as ecology, evolution, and agriculture. As research continues to advance, our understanding of the ektexine will undoubtedly deepen, revealing more about its significance in the natural world. This knowledge is essential not only for academic purposes but also for practical applications in environmental conservation and sustainable farming practices. Hence, the study of the ektexine is vital for both scientific inquiry and real-world solutions to pressing environmental issues.

对花粉及其成分的研究对于理解植物生物学和生态学至关重要。花粉粒中的一个关键结构是被称为外层的外层，它在保护花粉免受环境压力方面发挥着重要作用。外层主要由各种材料组成，主要是孢子素，这种物质具有很强的抗降解性。这种韧性使得花粉粒能够在严酷条件下存活很长时间。在植物研究中，科学家们通常关注外层，以研究开花植物的进化适应性。不同物种的外层的厚度和纹理可能会有显著差异，这提供了关于它们繁殖策略和生态位的见解。例如，一些植物已经发展出更厚的外层以承受极端天气条件，而另一些植物可能具有更精致的结构，以便通过风或昆虫更容易地传播花粉。此外，外层不仅仅是一个保护屏障；它还在授粉过程中花粉与花朵柱头之间的相互作用中发挥作用。外层的表面特征可以影响花粉的萌发和遗传物质的成功转移。因此，了解外层的特性可以帮助研究人员开发更好的授粉管理方法，以确保更高的作物产量和粮食安全。除了其生物功能外，外层在古植物学中也有应用，化石化的花粉粒提供了有关过去气候和生态系统的宝贵信息。通过分析古代花粉的外层，科学家可以重建历史植被模式，并深入了解气候变化如何影响数百万年来植物的进化。总的来说，外层是植物学领域中的一个迷人主题，连接着生态学、进化论和农业等多个学科。随着研究的不断进展，我们对外层的理解无疑会加深，揭示其在自然界中的重要性。这一知识对于学术目的至关重要，同时也对于环境保护和可持续农业实践的实际应用至关重要。因此，研究外层对于科学探究和解决紧迫环境问题的现实方案都是至关重要的。