micropylar

简明释义

英[ˌmaɪkroʊˈpaɪlər]美[ˌmaɪkroʊˈpaɪlər]

珠孔的

卵膜孔的

英英释义

单词用法

同义词

反义词

例句

1.The haustorium cellularizated from the micropylar end to chalazal end at the later globular stage.

球形胚晚期吸器自珠孔端向合点端逐渐细胞化。

2.The endosperm development follows the nuclear type. The endosperm cells form at the micropylar end, and remain free nuclear phase at chalazal end.

胚乳发育为核型，珠孔端胚乳细胞化，合点端保持游离核状态。

3.When the free nuclei of the endosperm were 16 or 32, the nucellar embryo initial (s) originated from the nucellar cells near the micropylar end of the embryo sac.

当胚乳游离核达到1 6或32个时，最早的珠心胚原始细胞由靠近胚囊珠孔端的珠心细胞分化形成。

4.When the free nuclei of the endosperm were 16 or 32, the nucellar embryo initial (s) originated from the nucellar cells near the micropylar end of the embryo sac.

当胚乳游离核达到1 6或32个时，最早的珠心胚原始细胞由靠近胚囊珠孔端的珠心细胞分化形成。

5.The free cell wall formation occurs first in the micropylar end when the embryo is 4-6 celled stage, then to the chalazal end and the center.

当胚发育到4—6个细胞时，在胚囊珠孔瑞的游离核之间先形成细胞壁。细胞壁的形成是以自由壁的方式从珠孔端到合点端自外向内进行。

6.Synergid cells Two haploid cells located near the egg cell at the micropylar end of the embryo sac in flowering plants.

存在于开花植物胚囊内，是位于珠孔端的卵细胞两侧的两个单倍体细胞。

7.There are several nucellar cells in micropylar region that develop into embellum.

珠孔区域有伸长的珠心细胞。

8.During embryonic development, the micropylar (小孔的) region plays a significant role in nutrient transfer.

在胚胎发育过程中，micropylar (小孔的) 区域在营养转移中起着重要作用。

9.In some species, the micropylar (小孔的) end of the seed is crucial for water absorption during germination.

在某些物种中，种子的micropylar (小孔的) 端对发芽期间的水分吸收至关重要。

10.The fertilization process in plants begins when the sperm cells travel through the micropylar (小孔的) region of the ovule.

植物的受精过程始于精子细胞通过卵子中的micropylar (小孔的) 区域。

11.The micropylar (小孔的) opening allows for the entry of pollen grains in the fertilization process.

在受精过程中，micropylar (小孔的) 开口允许花粉粒进入。

12.Researchers are studying how the micropylar (小孔的) structure influences seed dispersal mechanisms.

研究人员正在研究micropylar (小孔的) 结构如何影响种子传播机制。

作文

In the study of botany, the term micropylar refers to a specific region of a seed that is crucial for its development. The micropylar end is where the pollen tube enters the ovule during fertilization, and it plays a significant role in the seed's growth process. Understanding the micropylar structure can provide insight into how seeds germinate and develop into plants. Seeds are remarkable structures that enable plants to reproduce and spread. When a seed is formed, it contains an embryo, which will eventually develop into a new plant. The micropylar region is essential because it allows the nutrients from the surrounding maternal tissues to be transferred to the developing embryo. This transfer is vital for the embryo's survival and growth. The micropylar opening serves as a conduit through which water and nutrients enter the seed. It is often surrounded by protective layers that ensure the seed remains viable until conditions are suitable for germination. In many species, the micropylar area is equipped with specialized structures that facilitate this nutrient transfer. For instance, in some legumes, the micropylar region features a chalazal plug that helps regulate the flow of resources to the embryo. Moreover, the micropylar part of the seed also influences the timing of germination. When environmental conditions such as moisture and temperature become favorable, the seed absorbs water through its micropylar opening. This hydration process triggers metabolic activities within the seed, leading to the growth of the embryo and the eventual emergence of the seedling. Research on the micropylar region has significant implications for agriculture and horticulture. By understanding how the micropylar structure functions, scientists can develop strategies to improve seed viability and germination rates. For example, manipulating the conditions surrounding the micropylar region can enhance nutrient uptake, resulting in healthier seedlings. Additionally, the micropylar feature is not only limited to flowering plants but can also be observed in gymnosperms and other seed-bearing organisms. This universality highlights the evolutionary significance of the micropylar structure in seed development. In conclusion, the term micropylar encapsulates a vital aspect of seed biology. Recognizing the importance of the micropylar region provides valuable insights into plant reproduction and development. As we continue to explore the complexities of plant life, the micropylar structure remains a key focus for researchers aiming to enhance agricultural practices and promote sustainable farming. Understanding the intricacies of the micropylar region can lead to innovations that support food security and environmental health.

在植物学研究中，术语micropylar指的是种子的特定区域，这对其发育至关重要。micropylar端是花粉管在受精过程中进入胚珠的地方，它在种子的生长过程中发挥着重要作用。理解micropylar结构可以提供关于种子如何萌发和发展成植物的见解。种子是使植物能够繁殖和传播的显著结构。当种子形成时，它包含一个胚胎，最终将发育成一株新植物。micropylar区域至关重要，因为它允许来自周围母体组织的营养物质转移到发育中的胚胎。这种转移对于胚胎的生存和生长至关重要。micropylar开口作为水分和营养物质进入种子的通道。它通常被保护层包围，以确保种子在适合萌发的条件下保持活力。在许多物种中，micropylar区域配备了专门的结构，以促进这种营养转移。例如，在某些豆科植物中，micropylar区域具有一个胶质塞，有助于调节资源流向胚胎。此外，种子的micropylar部分还影响萌发的时间。当环境条件如湿度和温度变得有利时，种子通过其micropylar开口吸收水分。这个水合作用过程触发了种子内部的代谢活动，导致胚胎的生长和幼苗的最终出现。对micropylar区域的研究对农业和园艺具有重要意义。通过了解micropylar结构的功能，科学家可以制定策略以提高种子的活力和萌发率。例如，操控围绕micropylar区域的条件可以增强营养物质的吸收，从而导致更健康的幼苗。此外，micropylar特征不仅限于开花植物，还可以在裸子植物和其他种子植物中观察到。这种普遍性突显了micropylar结构在种子发育中的进化重要性。总之，术语micropylar概括了种子生物学的一个重要方面。认识到micropylar区域的重要性为植物繁殖和发育提供了宝贵的见解。随着我们继续探索植物生命的复杂性，micropylar结构仍然是研究人员关注的关键焦点，旨在改善农业实践并促进可持续农业。理解micropylar区域的复杂性可以带来支持粮食安全和环境健康的创新。