coleorhiza

简明释义

英[ˌkoʊliəˈrɪzə]美[ˌkoʊliəˈrɪzə]

n. [植] 胚根鞘

复 数 c o l e o r h i z a e

英英释义

单词用法

同义词

反义词

例句

1.Both root and root cap are covered by a sheath-like structure called the coleorhiza.

根和根冠被一鞘状结构，即胚根鞘所覆盖。

2.Both root and root cap are covered by a sheath-like structure called the coleorhiza.

根和根冠被一鞘状结构，即胚根鞘所覆盖。

3.In monocotyledons, the coleorhiza plays a significant role in seedling establishment.

在单子叶植物中，coleorhiza在幼苗建立中起着重要作用。

4.The structure of the coleorhiza is crucial for the plant's early development.

该coleorhiza的结构对植物的早期发育至关重要。

5.The protective function of the coleorhiza allows seedlings to survive harsh conditions.

由于coleorhiza的保护功能，幼苗能够在恶劣条件下生存。

6.During germination, the coleorhiza emerges first to protect the root.

在发芽过程中，coleorhiza首先出现以保护根部。

7.The coleorhiza of the seedling helps in anchoring it to the soil.

幼苗的coleorhiza有助于将其固定在土壤中。

作文

In the world of botany, understanding the various structures and functions of plants is crucial for both scientific research and practical applications. One such fascinating structure is the coleorhiza, which plays a significant role in the early stages of a plant's life cycle. The coleorhiza is a protective sheath that covers the young root of monocotyledonous plants, such as grasses and cereals. Its primary function is to safeguard the delicate root as it emerges from the seed and begins to penetrate the soil. This protective covering is essential because it helps to prevent damage from soil particles and other environmental factors that could hinder the root's growth.The term 'coleorhiza' originates from the Greek words 'koleos', meaning sheath, and 'rhiza', meaning root. This etymology highlights the structure's protective nature. When a seed germinates, the first structure to emerge is typically the radicle, which will develop into the primary root. However, before the radicle can grow effectively, it is enveloped by the coleorhiza. This sheath not only protects the young root but also facilitates its growth by providing a smooth surface that allows it to push through the soil more easily.Moreover, the coleorhiza is an essential component of the overall seed structure, which includes the seed coat and endosperm. The seed coat protects the seed from physical damage and desiccation, while the endosperm provides the necessary nutrients for the developing embryo. Together, these components ensure that the seed can successfully germinate and establish itself in a suitable environment.In agricultural practices, understanding the function of the coleorhiza can lead to better crop management strategies. For instance, farmers can enhance seedling emergence by ensuring that the soil conditions are optimal for root development. If the soil is too compacted or dry, the young root may struggle to break through the surface, leading to poor plant establishment. By recognizing the importance of the coleorhiza, farmers can take proactive measures to improve soil health and structure, ultimately leading to higher crop yields.Additionally, the study of the coleorhiza has implications for plant breeding and genetic research. Scientists can investigate how different varieties of plants develop their coleorhiza and how this affects their overall growth and resilience. By selecting for traits that enhance the effectiveness of the coleorhiza, breeders can cultivate plants that are better suited to withstand environmental stresses, such as drought or nutrient-poor soils.In conclusion, the coleorhiza is a vital structure in the life cycle of monocotyledonous plants, serving as a protective sheath for young roots. Its significance extends beyond mere protection, influencing agricultural practices and plant breeding efforts. As we continue to explore the complexities of plant biology, the coleorhiza serves as a reminder of the intricate relationships between plant structures and their environments. Understanding such components is essential for advancing our knowledge in botany and improving agricultural sustainability.

在植物学的世界里，理解植物的各种结构和功能对科学研究和实际应用至关重要。其中一个引人入胜的结构是coleorhiza，它在植物生命周期的早期阶段发挥着重要作用。coleorhiza是覆盖单子叶植物（如草类和谷物）幼根的保护鞘。其主要功能是在幼根从种子中萌发并开始穿透土壤时保护脆弱的根部。这个保护性覆盖物至关重要，因为它有助于防止土壤颗粒和其他环境因素造成的损害，这些因素可能会妨碍根的生长。“coleorhiza”一词源于希腊语中的“koleos”，意为鞘，和“rhiza”，意为根。这一词源突出了该结构的保护性质。当种子发芽时，通常首先出现的结构是胚根，它将发展成主根。然而，在胚根能够有效生长之前，它被coleorhiza包裹着。这个鞘不仅保护幼根，还通过提供一个光滑的表面来促进其生长，使其更容易推开土壤。此外，coleorhiza是整体种子结构的重要组成部分，种子结构还包括种皮和胚乳。种皮保护种子免受物理损伤和干燥，而胚乳则为发育中的胚胎提供必要的营养。这些组成部分共同确保种子能够成功发芽并在合适的环境中扎根。在农业实践中，理解coleorhiza的功能可以带来更好的作物管理策略。例如，农民可以通过确保土壤条件最适合根部发育来增强幼苗的出苗率。如果土壤过于紧实或干燥，幼根可能会难以突破表面，导致植物建立不良。通过认识到coleorhiza的重要性，农民可以采取积极措施改善土壤健康和结构，最终提高作物产量。此外，对coleorhiza的研究对植物育种和遗传研究也有重要意义。科学家可以研究不同品种的植物如何发育其coleorhiza，以及这如何影响它们的整体生长和抗逆性。通过选择增强coleorhiza有效性的特征，育种者可以培育出更适合抵御环境压力（如干旱或贫瘠土壤）的植物。总之，coleorhiza是单子叶植物生命周期中的一个重要结构，作为幼根的保护鞘。它的意义不仅限于保护，还影响农业实践和植物育种工作。随着我们继续探索植物生物学的复杂性，coleorhiza提醒我们植物结构与其环境之间的复杂关系。理解这些组成部分对于推进我们在植物学领域的知识和改善农业可持续性至关重要。