bracteal

简明释义

英[ˈbræktɪəl]美[ˈbræktɪəl]

adj. 苞的

英英释义

单词用法

同义词

反义词

例句

1.The number of leaf primordia was affected by both genotype and environment, while the Numbers of bracteal, spikelet and floret primordia were affected mainly by environmental factors.

叶原基数由基因型和环境条件共同决定，而苞叶原基、小穗原基和小花原基数以环境因子的影响为主。

2.The number of leaf primordia was affected by both genotype and environment, while the Numbers of bracteal, spikelet and floret primordia were affected mainly by environmental factors.

叶原基数由基因型和环境条件共同决定，而苞叶原基、小穗原基和小花原基数以环境因子的影响为主。

3.Some plants have brightly colored bracteal leaves that serve to attract attention.

一些植物有鲜艳的苞片叶子，用于吸引注意力。

4.The bracteal parts of the plant can vary significantly between species.

植物的苞片部分在不同物种之间可能有显著差异。

5.The bracteal structure of the flower helps in attracting pollinators.

花的苞片结构有助于吸引授粉者。

6.The bracteal arrangement is crucial for the reproductive success of the species.

对于物种的繁殖成功来说，苞片的排列至关重要。

7.In botany, bracteal leaves can often be mistaken for petals.

在植物学中，苞片叶子常常被误认为是花瓣。

作文

In the world of botany, understanding the various structures and functions of plants is crucial for both students and enthusiasts alike. One such term that often comes up in discussions about plant anatomy is bracteal, which refers to the features or characteristics related to bracts. Bracts are specialized leaves that can be found at the base of flowers or inflorescences, serving various purposes that contribute to the reproductive success of plants. For instance, in many flowering plants, these bracteal structures may attract pollinators by providing a colorful backdrop against which flowers stand out. This not only enhances visibility but also plays a significant role in the ecological interactions between plants and their pollinators.The significance of bracteal features extends beyond mere aesthetics; they can also provide protection to the developing flowers and seeds. In some species, bracteal leaves can shield young buds from harsh environmental conditions, such as extreme temperatures or excessive moisture. This protective function is vital for the survival of many plant species, particularly those that grow in challenging habitats.Moreover, the study of bracteal structures can offer insights into the evolutionary adaptations of plants. Different species exhibit a wide range of bract morphology, reflecting their unique environmental pressures and reproductive strategies. For example, in certain tropical plants, the bracteal leaves may evolve to be large and colorful, mimicking the appearance of petals to lure in specific pollinators. Conversely, in arid regions, bracteal adaptations might favor smaller, more robust structures that conserve water and withstand strong winds.In horticulture, understanding bracteal characteristics can significantly impact cultivation practices. Gardeners and landscape designers often select plants based on their bracteal attributes, as these can influence not only the visual appeal of a garden but also its ecological health. For instance, incorporating plants with vibrant bracteal features can create a visually striking landscape that attracts beneficial insects, thereby promoting biodiversity.Furthermore, the role of bracteal structures in plant reproduction cannot be overstated. In many species, the presence of well-developed bracts can enhance seed dispersal mechanisms. Some plants have evolved bracteal structures that aid in the wind dispersal of seeds, while others utilize animals to carry seeds away from the parent plant. This variation in dispersal strategies highlights the adaptability of plants and their reliance on bracteal features to thrive in diverse environments.In conclusion, the term bracteal encapsulates a fascinating aspect of plant biology that intertwines beauty, functionality, and ecological significance. By appreciating the role of bracteal structures in plant life, we can gain a deeper understanding of the intricate relationships that exist within ecosystems. Whether you are a student of botany, a gardener, or simply a nature enthusiast, recognizing the importance of bracteal features can enrich your experience and appreciation of the natural world around you. As we continue to explore the complexities of plant life, let us not overlook the subtle yet essential contributions of bracteal structures to our environment and the myriad forms of life it supports.

在植物学的世界中，理解植物的各种结构和功能对学生和爱好者来说至关重要。一个在讨论植物解剖时经常出现的术语是bracteal，它指的是与苞片相关的特征或特性。苞片是可以在花或花序的基部找到的特殊叶子，具有多种用途，有助于植物的繁殖成功。例如，在许多开花植物中，这些bracteal结构可能通过提供一个色彩斑斓的背景来吸引传粉者，使花朵更加突出。这不仅增强了可见性，还在植物与其传粉者之间的生态互动中发挥了重要作用。bracteal特征的重要性超越了单纯的美学；它们还可以为正在发育的花朵和种子提供保护。在一些物种中，bracteal叶子可以保护幼芽免受恶劣环境条件的影响，例如极端温度或过多的湿气。这种保护功能对许多植物物种的生存至关重要，尤其是那些生长在严酷栖息地中的植物。此外，研究bracteal结构可以提供有关植物进化适应的见解。不同物种表现出广泛的苞片形态，反映了它们独特的环境压力和繁殖策略。例如，在某些热带植物中，bracteal叶子可能演变得大而多彩，模仿花瓣的外观以吸引特定的传粉者。相反，在干旱地区，bracteal适应可能更倾向于较小、更坚固的结构，以节约水分并抵御强风。在园艺中，理解bracteal特征可以显著影响种植实践。园丁和景观设计师通常根据植物的bracteal属性选择植物，因为这些属性不仅会影响花园的视觉吸引力，还会影响其生态健康。例如，结合具有鲜艳bracteal特征的植物可以创造出视觉上引人注目的景观，吸引有益昆虫，从而促进生物多样性。此外，bracteal结构在植物繁殖中的作用不容小觑。在许多物种中，良好发达的苞片的存在可以增强种子传播机制。一些植物已经进化出了有助于风传播种子的bracteal结构，而其他植物则利用动物将种子从母植物处携带走。这种传播策略的变化突显了植物的适应能力及其对bracteal特征在多样环境中生存的依赖。总之，术语bracteal概括了植物生物学中的一个迷人方面，交织着美、功能和生态重要性。通过欣赏bracteal结构在植物生命中的作用，我们可以更深入地理解存在于生态系统中的复杂关系。无论你是植物学的学生、园丁，还是单纯的自然爱好者，认识到bracteal特征的重要性都能丰富你的体验和对周围自然世界的欣赏。随着我们继续探索植物生命的复杂性，让我们不要忽视bracteal结构对我们的环境及其支持的无数生命形式所做出的微妙而又重要的贡献。