auxins

简明释义

英[ˈɔːksɪnz]美[ˈɔksɪnz]

n. 茁长素；[生化]植物生长激素（auxin 的复数）

英英释义

单词用法

同义词

反义词

例句

1.The results indicated that exgeneous auxins, to some extent, might alleviate the symptom of the witches' broom of the seedlings, but the effects of the auxins were different with NAA and IBA.

结果表明，植物生长素类物质在一定程度上可以减轻豫杂一号泡桐丛枝病发病的症状，但不同种类的生长素对其减轻的程度存在一定的差异。

2.The results indicated that exgeneous auxins, to some extent, might alleviate the symptom of the witches' broom of the seedlings, but the effects of the auxins were different with NAA and IBA.

结果表明，植物生长素类物质在一定程度上可以减轻豫杂一号泡桐丛枝病发病的症状，但不同种类的生长素对其减轻的程度存在一定的差异。

3.Yushu 4 and Yushu 12 were used to study the effects of auxins(IBA and NAA), temperature and illumination time on plantlets regeneration from subcultured tip meristem in sweet potato.

以豫薯4号和豫薯12号为试材，研究了生长素类物质（IBA和NAA）、温度和光照时间对转移后甘薯茎尖分生组织培养成苗的影响。

4.In this paper, the results of preparative separations of steroid reaction pro-ducts, indole auxins, and DNP amino acid mixture with suitable two-phasesolvent systems is introduced.

本文简要说明了这种仪器的原理、结构和特征，并给出了制备分离甾族反应混合物、吲哚类植物激素、二硝基苯氨基酸的应用结果。

5.The expression of poplar disease resistance in callus tissues is greatly affected by concentration of auxins and cytokinins in the medium, inoculum density and temperature.

来自抗病无性系的愈伤组织也表现抗病。 愈伤组织抗病性表达受培养基的激素浓度及比例、病原菌的接种量和接种温度影响较大；

6.Chicory's regrowth took root easily, both NAA and IBA could induct rooting, but it would be inhibited if the concentration of auxins were too high.

菊苣再生苗生根较容易，IBA和NAA均能诱导菊苣再生苗生根，但浓度过高会抑制其生根。

7.Auxins, one of the best-known plant growth factors, have an extremely wide spectrum of activity, and are particularly important.

生长素- - -最被大众所熟知的植物激素之一，是一种相当重要，且具有相当广谱的调控活性范围的植物生长调节激素。

8.The green shoot-bud regeneration rates of calli were affected by combinations of different auxins in regeneration medium.

分化培养基上不同激素配比也影响其绿苗再生率。

9.Auxins are produced mainly by young developing leaves on actively growing shoots.

生长素主要是从旺盛生长新梢上正在发育的幼叶产生出来。

10.The role of auxins in plant growth is crucial as they help regulate cell elongation.

植物生长中生长素的作用至关重要，因为它们帮助调节细胞伸长。

11.Farmers often apply synthetic auxins to enhance fruit development.

农民经常施用合成生长素来促进果实发育。

12.Research shows that auxins can influence root formation in cuttings.

研究表明，生长素可以影响插条的根系形成。

13.In tissue culture, auxins are essential for the initiation of roots.

在组织培养中，生长素对于根的形成是必不可少的。

14.The application of auxins can lead to increased yield in certain crops.

施用生长素可以提高某些作物的产量。

作文

In the world of plant biology, the term auxins refers to a class of plant hormones that play a crucial role in regulating various aspects of plant growth and development. These hormones are primarily involved in processes such as cell elongation, root formation, and the response of plants to light and gravity. Understanding auxins is essential for anyone interested in botany or agricultural science, as they influence not only how plants grow but also how they adapt to their environment. One of the key functions of auxins is promoting cell elongation. When a plant experiences light from one direction, auxins accumulate on the shaded side of the plant. This uneven distribution of auxins causes the cells on that side to elongate more than those on the light-exposed side, resulting in the plant bending towards the light source. This phenomenon, known as phototropism, is vital for maximizing light absorption, which is essential for photosynthesis. In addition to phototropism, auxins are also involved in gravitropism, the plant's response to gravity. Roots tend to grow downward, while stems grow upward, and this directional growth is influenced by the distribution of auxins. In roots, higher concentrations of auxins inhibit cell elongation, causing the roots to grow downwards. Conversely, in stems, auxins promote cell elongation, allowing the stem to grow upwards. This dual function highlights the importance of auxins in helping plants orient themselves in their environment. Another significant role of auxins is in the formation of roots. When a cutting is made from a plant, applying auxins can encourage root development, making it easier to propagate new plants. This practice is widely used in horticulture and agriculture to produce clones of desirable plant varieties. By manipulating auxins, gardeners and farmers can enhance root growth and improve the chances of successful plant propagation. Moreover, auxins are crucial during the process of fruit development. They help regulate the growth of fruits and can even influence the timing of fruit ripening. For instance, when fruits are harvested, applying auxins can help delay ripening, allowing for better storage and transportation. This application of auxins is an important aspect of modern agricultural practices, ensuring that fruits reach consumers in optimal condition. Despite their many benefits, the use of auxins must be approached with caution. Excessive application can lead to abnormal growth patterns or even plant damage. Therefore, understanding the correct dosage and timing for applying auxins is critical for achieving the desired results without harming the plants. In conclusion, auxins are vital plant hormones that significantly influence growth and development. From promoting cell elongation and root formation to regulating fruit development, their roles are multifaceted and essential for plant health. As we continue to study and understand auxins, we can harness their power to improve agricultural practices and ensure sustainable plant growth in various environments.

在植物生物学的世界中，术语auxins指的是一类植物激素，这些激素在调节植物生长和发育的各个方面发挥着至关重要的作用。这些激素主要参与细胞伸长、根系形成以及植物对光和重力的反应等过程。理解auxins对于任何对植物学或农业科学感兴趣的人来说都是必不可少的，因为它们不仅影响植物的生长，还影响植物如何适应环境。 auxins的一个关键功能是促进细胞伸长。当植物从一个方向接收光线时，auxins会在植物的阴影侧积聚。这种auxins的不均匀分布导致阴影侧的细胞比光照侧的细胞伸长得更多，从而使植物向光源弯曲。这种现象被称为向光性（phototropism），对于最大化光吸收至关重要，而光吸收又是光合作用所必需的。 除了向光性，auxins还参与了重力向性（gravitropism），即植物对重力的反应。根部倾向于向下生长，而茎部则向上生长，这种方向性生长受到auxins分布的影响。在根部，高浓度的auxins抑制细胞伸长，导致根部向下生长。相反，在茎部，auxins促进细胞伸长，使茎部向上生长。这种双重功能突显了auxins在帮助植物在其环境中定向生长的重要性。 auxins的另一个重要作用是在根系形成过程中。当从植物上剪下插条时，施加auxins可以促进根系的发育，从而更容易繁殖新植物。这种做法在园艺和农业中广泛使用，以生产理想植物品种的克隆。通过操控auxins，园丁和农民可以增强根系生长，提高植物繁殖成功的机会。 此外，auxins在果实发育过程中也至关重要。它们帮助调节果实的生长，甚至可以影响果实成熟的时间。例如，当果实被采摘后，施加auxins可以帮助延缓成熟，从而改善储存和运输。这种对auxins的应用是现代农业实践的重要方面，确保水果以最佳状态送达消费者。 尽管有许多好处，但使用auxins必须谨慎。过量施用可能导致异常的生长模式甚至植物损伤。因此，了解施用auxins的正确剂量和时机对于实现期望结果而不损害植物至关重要。 总之，auxins是重要的植物激素，对植物的生长和发育产生重大影响。从促进细胞伸长和根系形成到调节果实发育，它们的作用多方面且对植物健康至关重要。随着我们继续研究和理解auxins，我们可以利用它们的力量来改善农业实践，并确保在各种环境中可持续的植物生长。