pistil

简明释义

英[ˈpɪstɪl]美[ˈpɪstɪl]

n. [植] 雌蕊

复 数 p i s t i l s

英英释义

单词用法

同义词

反义词

例句

1.Pollen is carried to the pistil by wind.

花粉通过风传播到雌蕊上。

2.A flower is made up of four parts: the sepal, petal, stamen and pistil.

一朵花由四部分组成：花萼，花瓣，雄蕊和雌蕊。

3.Botany the receptive apex of the pistil of a flower, on which pollen is deposited at pollination.

花雌蕊花柱顶部，授粉时花粉被旋转于此。

4.Pistil is the seed - producing part of the flower.

雌蕊是花结种的一部分。

5.The stamen is the male part of a flower. The pistil is the female part.

雄蕊是花的雄性部分。雌蕊是花的雌性部分。

6.Pistil head with a basal membranous appendage.

雌蕊头状花序具一基部的膜质附属物。

7.The ultrastructure of transmitting tissue in the pistil of sweet, potato (Ipomeoa batatas) has been observed.

对甘薯雌蕊引导组织细胞的超微结构进行了观察分析。

8.The pistil receives pollen from the male parts of the flower.

雌蕊接收来自花的雄性部分的花粉。

9.The flower's pistil is essential for reproduction.

这朵花的雌蕊对繁殖至关重要。

10.The length of the pistil can vary greatly among different species.

不同物种之间，雌蕊的长度差异很大。

11.Each pistil can produce seeds after fertilization.

每个雌蕊在受精后可以产生种子。

12.In botany, the pistil is composed of the ovary, style, and stigma.

在植物学中，雌蕊由子房、花柱和柱头组成。

作文

In the world of botany, understanding the structure of flowers is essential for both amateur gardeners and professional horticulturists. One of the most important components of a flower is the pistil, which plays a crucial role in the reproductive process of flowering plants. The pistil is the female reproductive part of a flower, typically located in the center. It consists of three main parts: the stigma, style, and ovary. Each of these components has a specific function that contributes to the overall process of pollination and fertilization.The stigma is the top part of the pistil, which is often sticky or feathery to catch pollen from the air or from visiting pollinators like bees and butterflies. When pollen grains land on the stigma, they germinate and grow down through the style, which is the elongated part of the pistil. The style acts as a conduit, allowing the pollen to reach the ovary, where the ovules are located. This journey is vital because it leads to fertilization, resulting in the development of seeds.The ovary, found at the base of the pistil, houses the ovules, which are the potential seeds of the plant. Once fertilization occurs, the ovules develop into seeds, and the ovary often transforms into a fruit, protecting the seeds and aiding in their dispersal. This transformation is crucial for the continuation of many plant species, making the pistil an integral part of the plant’s life cycle.Different flowers exhibit various shapes and sizes of pistils, which can affect how they attract pollinators. For instance, some flowers have long styles that require longer-tongued insects to access the nectar, while others have short styles suitable for smaller pollinators. This diversity in pistil morphology reflects the evolutionary adaptations of plants to their environments and the types of pollinators they attract.Moreover, the health of the pistil is essential for successful reproduction. Environmental factors such as temperature, humidity, and soil quality can significantly impact the development of the pistil and its ability to produce viable seeds. For instance, if a flower's pistil is damaged or malformed due to poor growing conditions, it may not be able to effectively capture pollen or support the growth of seeds, ultimately affecting the plant's reproductive success.In conclusion, the pistil is a vital part of flowering plants that deserves attention and appreciation. Understanding its structure and function helps us comprehend the complex processes of pollination and fertilization. By recognizing the importance of the pistil in plant reproduction, we can better appreciate the intricate relationships between plants and their pollinators, as well as the ecological balance necessary for sustaining diverse plant life on our planet. As we cultivate our gardens or study the natural world, let us remember the significance of the pistil and the role it plays in the beauty and continuity of nature.

在植物学的世界中，理解花朵的结构对业余园丁和专业园艺师都至关重要。花朵中最重要的组成部分之一是雌蕊，它在开花植物的繁殖过程中起着关键作用。雌蕊是花的雌性生殖部分，通常位于中心。它由三个主要部分组成：柱头、花柱和子房。每个组成部分都有其特定的功能，为授粉和受精的整体过程做出贡献。柱头是雌蕊的顶部，通常是粘性的或羽毛状的，以便捕捉空气中或来自蜜蜂和蝴蝶等访花者的花粉。当花粉颗粒落在柱头上时，它们会发芽并通过花柱向下生长，花柱是雌蕊的延长部分。花柱充当通道，使花粉能够到达子房，子房内包含胚珠。这个旅程至关重要，因为它导致受精，从而形成种子的发育。子房位于雌蕊的底部，容纳胚珠，这些胚珠是植物潜在的种子。一旦发生受精，胚珠就会发育成种子，而子房通常会转变为果实，保护种子并帮助其传播。这种转变对许多植物物种的延续至关重要，使得雌蕊成为植物生命周期中不可或缺的一部分。不同的花朵展现出各种形状和大小的雌蕊，这可能会影响它们吸引授粉者的方式。例如，一些花朵具有长花柱，需要长舌头的昆虫来获取花蜜，而另一些则有适合较小授粉者的短花柱。这种雌蕊形态的多样性反映了植物对其环境的进化适应及其吸引授粉者的方式。此外，雌蕊的健康对成功繁殖至关重要。温度、湿度和土壤质量等环境因素可以显著影响雌蕊的发育及其产生可行种子的能力。例如，如果花朵的雌蕊因生长条件不良而受损或畸形，它可能无法有效捕获花粉或支持种子的生长，最终影响植物的繁殖成功。总之，雌蕊是开花植物的重要组成部分，值得我们关注和欣赏。理解它的结构和功能有助于我们理解授粉和受精的复杂过程。通过认识到雌蕊在植物繁殖中的重要性，我们可以更好地欣赏植物与其授粉者之间的复杂关系，以及维持我们星球上多样植物生命所需的生态平衡。当我们栽培花园或研究自然界时，让我们记住雌蕊的重要性以及它在自然之美和延续中的作用。