lenticel

简明释义

英[ˈlentɪˌsel]美[ˈlentəˌsel]

n. 皮孔

英英释义

单词用法

同义词

反义词

例句

1.With the development of the vascular systems in the adventitious roots, the roots extrude from the lenticel or the cutting callus.

随着不定根内部的维管系统的发育，不定根从皮孔或下切口伸出。

2.The results showed that the occurrence of ring rot disease was 92% in lenticels and 8% not in lenticel.

结果表明，枝干轮纹病病斑在皮孔部位发病频率为92％，非皮孔部位为8％。

3.With the development of the vascular systems in the adventitious roots, the roots extrude from the lenticel or the cutting callus.

随着不定根内部的维管系统的发育，不定根从皮孔或下切口伸出。

4.Fruit weight loss ratio was remarkable positively related to the lenticel coverage value in varieties with opened lenticel.

具开放型皮孔的品种其失重率与皮孔覆盖值成显著正相关。

5.The presence of lenticels indicates healthy tree growth.

存在气孔表明树木生长健康。

6.You can observe the lenticel on the bark of apple trees.

你可以在苹果树的树皮上观察到气孔。

7.The lenticel is essential for gas exchange in woody plants.

在木本植物中，气孔 对于气体交换是必不可少的。

8.In some species, lenticels are larger and more pronounced.

在某些物种中，气孔更大且更明显。

9.During the winter, lenticels help the tree breathe even when it's dormant.

在冬季，气孔帮助树木即使在休眠期也能呼吸。

作文

In the world of botany, understanding the various structures and functions of plants is crucial for comprehending their growth and survival. One such structure that plays a vital role in gas exchange is the lenticel. A lenticel is a small, lens-shaped pore found on the stems and branches of woody plants. These specialized structures allow for the exchange of gases, primarily oxygen and carbon dioxide, between the plant and its environment. Unlike stomata, which are primarily found on leaves, lenticels provide an alternative pathway for gas exchange, especially in situations where the leaf surface is not available for this purpose.The presence of lenticels is particularly important for plants that live in environments where waterlogging can occur. In such conditions, the roots may become submerged, limiting their ability to take in oxygen from the soil. The lenticels help these plants survive by facilitating gas exchange directly through their stems. This adaptation is crucial for their overall health and growth, as it ensures that the plant can still respire even when its roots are deprived of oxygen.Moreover, the structure of a lenticel is fascinating. It consists of loosely packed cells that create a spongy texture, allowing air to move freely in and out. This unique design enhances the efficiency of gas exchange, making lenticels an essential feature of many woody plants. The size and number of lenticels can vary significantly among different species, reflecting their adaptation to specific environmental conditions.In addition to their role in gas exchange, lenticels can also be indicators of a plant's health. For instance, if a plant is experiencing stress due to drought or disease, the functioning of its lenticels may be compromised, leading to poor gas exchange and ultimately affecting the plant's growth. Therefore, studying lenticels can provide valuable insights into the overall condition of a plant.Furthermore, lenticels have been observed to play a role in the process of transpiration. While transpiration primarily occurs through stomata, lenticels can contribute to water vapor loss, especially in young shoots and stems. This additional pathway can be crucial for maintaining the plant's water balance, particularly in hot and dry climates.In conclusion, the lenticel is a remarkable adaptation that underscores the complexity of plant physiology. By facilitating gas exchange and contributing to transpiration, lenticels enhance a plant's ability to thrive in diverse environments. Understanding the function and significance of lenticels not only deepens our appreciation for the intricacies of plant life but also highlights the importance of preserving plant diversity in our ecosystems. As we continue to study and learn about these fascinating structures, we gain valuable knowledge that can inform conservation efforts and agricultural practices, ensuring that plants can continue to flourish in a changing world.

在植物学的世界中，理解植物的各种结构和功能对于理解它们的生长和生存至关重要。其中一种在气体交换中起着重要作用的结构是透气孔。透气孔是木本植物的茎和枝上发现的小型透镜状孔。这些专门的结构允许植物与环境之间进行气体交换，主要是氧气和二氧化碳。与主要存在于叶子上的气孔不同，透气孔为气体交换提供了替代途径，特别是在叶面无法用于此目的的情况下。透气孔的存在对生活在可能发生水淹的环境中的植物尤为重要。在这种情况下，根部可能会被淹没，从而限制其从土壤中获取氧气的能力。透气孔通过直接通过其茎促进气体交换，帮助这些植物生存。这种适应性对植物的整体健康和生长至关重要，因为它确保植物即使在根部缺氧的情况下也能进行呼吸。此外，透气孔的结构令人着迷。它由松散排列的细胞组成，形成海绵状的质地，使空气能够自由进出。这种独特的设计增强了气体交换的效率，使透气孔成为许多木本植物的重要特征。不同物种之间透气孔的大小和数量可能会有显著差异，反映出它们对特定环境条件的适应。除了在气体交换中的作用外，透气孔还可以作为植物健康的指示器。例如，如果植物因干旱或疾病而受到压力，其透气孔的功能可能会受到损害，导致气体交换不良，最终影响植物的生长。因此，研究透气孔可以提供关于植物整体状况的宝贵见解。此外，已观察到透气孔在蒸腾过程中的作用。虽然蒸腾主要通过气孔进行，但透气孔可以在年轻的枝条和茎中贡献水蒸气的损失。这条额外的途径对于维持植物在炎热和干燥气候中的水分平衡至关重要。总之，透气孔是一种非凡的适应性，突显了植物生理学的复杂性。通过促进气体交换和有助于蒸腾，透气孔增强了植物在多样环境中茁壮成长的能力。理解透气孔的功能和重要性不仅加深了我们对植物生命复杂性的欣赏，还突显了在我们的生态系统中保护植物多样性的重要性。当我们继续研究和了解这些迷人的结构时，我们获得的宝贵知识可以为保护工作和农业实践提供信息，确保植物能够在变化的世界中继续繁荣。