rachilla

简明释义

英[rəˈkɪlə]美[rəˈkɪlə]

n. [植] 小穗轴；[植] 小花轴

复 数 r a c h i l l a e

英英释义

单词用法

同义词

反义词

例句

1.It is because the vascular bundles in its rachilla and lodicules were undeveloped, the transport system was abnormal. and the lodicules absorbed and lost water difficultly.

这与其小穗轴和浆片中的维管束发育不良、辅导系统不发达、浆片不易吸水与失水等原因有关。

2.It is because the vascular bundles in its rachilla and lodicules were undeveloped, the transport system was abnormal. and the lodicules absorbed and lost water difficultly.

这与其小穗轴和浆片中的维管束发育不良、辅导系统不发达、浆片不易吸水与失水等原因有关。

3.This is formed by the swollen lowest rachilla internode and adnate lower glume.

膨胀的最低的小穗轴节间和贴生的更低的颖片形成这。

4.Occasionally, the number of stamens and carpels is altered and an ectopic floret occurs in the axil of the rachilla.

雄蕊和心皮的数目偶尔也发生改变，在小穗轴的叶腋处偶尔也异位产生小花。

5.In some species, the rachilla can be quite elongated.

在某些物种中，rachilla可以相当长。

6.The morphology of the rachilla varies significantly among different grass species.

不同草种之间，rachilla的形态差异显著。

7.The rachilla connects the spikelets to the main stem of the plant.

该rachilla将穗状花序连接到植物的主干。

8.During the study, we observed the structure of the rachilla under a microscope.

在研究中，我们在显微镜下观察了rachilla的结构。

9.The rachilla of the grass flower is crucial for seed development.

草花的rachilla对种子的发育至关重要。

作文

In the study of botany, particularly in the classification and anatomy of grasses, the term rachilla is often encountered. The rachilla refers to the small axis or stem that connects the spikelets in a grass flower. Understanding the structure and function of the rachilla is crucial for botanists and horticulturists alike, as it plays a significant role in the reproductive process of these plants. The rachilla, although small, serves as the backbone for the arrangement of florets within the spikelet. Each spikelet can contain multiple florets, and the rachilla ensures that they are properly aligned and spaced for optimal pollination and seed development. The morphology of the rachilla can vary significantly among different species of grasses, which can aid in their identification. For instance, in some species, the rachilla may be elongated, while in others, it may be short and stout. This variation can provide important clues about the plant's adaptation to its environment. Furthermore, the presence or absence of hairs, bristles, or other features on the rachilla can also be used to differentiate between closely related species. Additionally, the rachilla is not just a passive structural component; it also participates actively in the reproductive process. During flowering, the rachilla helps to stabilize the spikelet, ensuring that the florets are positioned correctly for pollinators or wind to facilitate fertilization. After successful fertilization, the rachilla supports the developing seeds, providing them with a connection to the parent plant until they are ready to disperse. In agricultural contexts, understanding the characteristics of the rachilla can have practical implications. For example, when breeding new varieties of cereal crops, agronomists might focus on traits related to the rachilla to enhance yield or disease resistance. By selecting plants with favorable rachilla traits, farmers can improve their harvests and ensure food security. Moreover, the study of the rachilla extends beyond just its biological significance. It can also inform ecological studies, as variations in rachilla structure may indicate how different grass species interact with their environments. For instance, grasses with more robust rachillae might be better suited to withstand strong winds or heavy rainfall, thereby influencing their distribution in various habitats. In conclusion, the rachilla is a vital component of grass anatomy that deserves attention not only for its structural role but also for its impact on reproduction, agriculture, and ecology. By studying the rachilla, researchers can gain insights into the complexities of plant biology and contribute to advancements in both scientific understanding and practical applications. Therefore, whether one is a student of botany or a professional in the field, a thorough comprehension of the rachilla can enrich one’s appreciation of the intricate world of grasses and their importance in our ecosystems.

在植物学的研究中，特别是在对草类的分类和解剖时，常常会遇到术语rachilla。rachilla指的是连接草花中小穗的细轴或茎。理解rachilla的结构和功能对于植物学家和园艺师来说至关重要，因为它在这些植物的繁殖过程中发挥着重要作用。尽管rachilla很小，但它为小穗内花朵的排列提供了支撑。每个小穗可以包含多个花朵，而rachilla确保它们能够正确对齐并间隔，以便于最佳授粉和种子发育。rachilla的形态在不同的草类物种之间可能显著不同，这有助于它们的鉴定。例如，在某些物种中，rachilla可能是细长的，而在其他物种中，它可能是短而粗壮的。这种变化可以提供有关植物适应其环境的重要线索。此外，rachilla上毛发、刺或其他特征的存在与否也可用于区分密切相关的物种。此外，rachilla不仅仅是一个被动的结构组件；它还积极参与繁殖过程。在开花期间，rachilla帮助稳定小穗，确保花朵的位置正确，以便授粉者或风能促进受精。成功受精后，rachilla支持发育中的种子，为它们提供与母植物的连接，直到它们准备好散播。在农业背景下，理解rachilla的特征具有实际意义。例如，在培育新的谷物品种时，农艺师可能会关注与rachilla相关的特征，以提高产量或抗病性。通过选择具有有利的rachilla特征的植物，农民可以改善他们的收成，确保粮食安全。此外，rachilla的研究超越了其生物学意义。它还可以为生态研究提供信息，因为rachilla结构的变化可能表明不同草类物种如何与其环境相互作用。例如，具有更强壮rachilla的草类可能更适合承受强风或大雨，从而影响它们在各种栖息地中的分布。总之，rachilla是草类解剖学中一个重要的组成部分，不仅由于其结构作用，还因为其对繁殖、农业和生态的影响而值得关注。通过研究rachilla，研究人员可以深入了解植物生物学的复杂性，并为科学理解和实际应用的进步做出贡献。因此，无论是植物学的学生还是该领域的专业人士，全面理解rachilla都能丰富人们对草类及其在生态系统中重要性的欣赏。