apospory

简明释义

英[ˈæpəspɔːrɪ]美[ˈæpəˌspori]

n. [植] 无孢子生殖；无孢子状态

英英释义

单词用法

同义词

反义词

例句

1.Facultative apospory in tetraploid paspalum distichum l.

四倍体双穗雀稗兼性无孢子生殖的研究。

2.Facultative apospory in tetraploid paspalum distichum l.

四倍体双穗雀稗兼性无孢子生殖的研究。

3.The results showed that the mode of reproduction conforms somatic apospory.

结果表明，其生殖方式符合体细胞孢子。

4.The study of apospory is crucial for understanding the life cycles of non-vascular plants.

研究apospory对理解非维管植物的生命周期至关重要。

5.Some plant biologists argue that apospory represents an evolutionary advantage in certain environments.

一些植物生物学家认为，在某些环境中，apospory代表了一种进化优势。

6.The occurrence of apospory can lead to increased genetic diversity in populations of certain plants.

在某些植物种群中，apospory的发生可能导致遗传多样性的增加。

7.In certain moss species, reproduction can occur through apospory, which is the formation of gametophytes directly from spores without a sporophyte stage.

在某些苔藓物种中，繁殖可以通过apospory发生，即孢子直接形成配子体，而不经过孢子体阶段。

8.Researchers are exploring the genetic mechanisms behind apospory in ferns to enhance their propagation.

研究人员正在探索蕨类植物中apospory背后的遗传机制，以增强其繁殖能力。

作文

In the fascinating world of botany, various terms and concepts help us understand the complex processes that govern plant reproduction and growth. One such term is apospory, which refers to a specific type of asexual reproduction observed in certain plants, particularly in the context of their life cycles. To fully grasp the significance of apospory, it is essential to explore its definition, mechanisms, and implications within the broader framework of plant biology.Apospory is defined as the development of gametophytes from somatic cells without the formation of spores. This process allows certain plants to bypass the typical sexual reproduction cycle, providing them with an alternative means of propagation. In essence, apospory enables plants to produce new individuals from vegetative tissues, which can be particularly advantageous in environments where conditions are not conducive to sexual reproduction.The mechanisms behind apospory are quite intriguing. In many cases, this process involves the transformation of specialized somatic cells into gametophytes, which are the structures responsible for producing gametes (sperm and eggs). These somatic cells can originate from various parts of the plant, such as leaves or stems, and undergo a series of cellular changes that lead to the formation of gametophytes. This remarkable ability to generate gametophytes directly from somatic tissues highlights the versatility and adaptability of plants in response to their environment.One of the most notable examples of apospory can be found in certain species of ferns. Ferns typically reproduce through a complex life cycle that includes both a sporophyte phase and a gametophyte phase. However, some fern species have evolved the ability to produce gametophytes directly from vegetative tissue, bypassing the sporophyte stage altogether. This adaptation can be particularly beneficial in habitats where spore dispersal is limited or where environmental conditions are unstable.The implications of apospory extend beyond just individual plant species; they also shed light on the evolutionary strategies employed by plants to survive and thrive in diverse ecosystems. By utilizing asexual reproduction methods like apospory, plants can rapidly colonize new areas, especially in disturbed environments where competition for resources may be fierce. This capability not only enhances their survival but also contributes to the overall biodiversity of the ecosystem.Moreover, understanding apospory is crucial for horticulturists and conservationists who aim to preserve plant species and their habitats. By recognizing the potential of asexual reproduction, efforts can be made to cultivate and propagate endangered plant species more effectively. This knowledge can also inform practices in agriculture, where harnessing the power of apospory could lead to improved crop yields and resilience against environmental stressors.In conclusion, the term apospory encapsulates a fascinating aspect of plant reproduction that underscores the complexity and adaptability of the botanical world. By exploring the mechanisms and significance of apospory, we gain valuable insights into the survival strategies of plants and their role in maintaining ecological balance. As we continue to study these processes, we enhance our appreciation for the intricate relationships within nature and the importance of preserving the diversity of plant life on our planet.

在植物学的迷人世界中，各种术语和概念帮助我们理解影响植物繁殖和生长的复杂过程。其中一个术语是无孢子生殖，它指的是某些植物，特别是在其生命周期的背景下观察到的一种特定类型的无性繁殖。要充分理解无孢子生殖的重要性，必须探索其定义、机制以及在植物生物学更广泛框架内的影响。无孢子生殖被定义为从体细胞发展出配子体，而不形成孢子。这个过程使某些植物能够绕过典型的有性繁殖周期，为它们提供了一种替代的繁殖手段。本质上，无孢子生殖使植物能够从营养组织中产生新个体，这在环境条件不利于有性繁殖的情况下尤为有利。无孢子生殖背后的机制非常引人入胜。在许多情况下，这个过程涉及将专门的体细胞转化为配子体，这些结构负责产生配子（精子和卵子）。这些体细胞可以起源于植物的各个部分，例如叶子或茎，并经历一系列细胞变化，导致配子体的形成。这种从体组织直接生成配子体的非凡能力突显了植物对环境的适应性和灵活性。某些蕨类植物的例子是无孢子生殖最显著的例子之一。蕨类植物通常通过包括孢子体阶段和配子体阶段的复杂生命周期进行繁殖。然而，一些蕨类植物已经进化出直接从营养组织中产生配子体的能力，完全绕过孢子体阶段。这种适应在孢子传播有限或环境条件不稳定的栖息地中尤其有益。无孢子生殖的影响不仅限于单个植物物种；它们还揭示了植物在多样生态系统中生存和繁衍所采用的进化策略。通过利用像无孢子生殖这样的无性繁殖方法，植物能够迅速占领新区域，特别是在资源竞争激烈的干扰环境中。这种能力不仅增强了它们的生存能力，还促进了生态系统的整体生物多样性。此外，理解无孢子生殖对于园艺师和保护主义者来说至关重要，他们旨在保护植物物种及其栖息地。通过认识到无性繁殖的潜力，可以采取措施更有效地培养和繁殖濒危植物物种。这一知识也可以为农业实践提供信息，通过利用无孢子生殖的力量，可能会提高作物产量和抵御环境压力的能力。总之，术语无孢子生殖概括了植物繁殖的一个迷人方面，突显了植物世界的复杂性和适应性。通过探索无孢子生殖的机制和意义，我们获得了关于植物生存策略及其在维持生态平衡中的作用的宝贵见解。随着我们继续研究这些过程，我们增强了对自然界中复杂关系的欣赏，以及保护我们星球植物生命多样性的重要性。