photoperiodic

简明释义

英[ˌfoʊtəˈpɪriˌɒdɪk]美[ˌfoʊtəˈpɪriˌɒdɪk]

[昆][植] 光周期的

[昆][植] 光周期的:属于光周期或光周期现象的

英英释义

单词用法

同义词

反义词

例句

1.It was observed that there were different genotypes for genetic flexibility in flowering photoperiodic response, although the populations had always been subjected to the same photoperiodic induction.

虽然同一个居群长期受到相同光周期诱导，但是种群不是有单一相近的开花期，存在着开花光周期反应不同的基因型。

2.It was observed that there were different genotypes for genetic flexibility in flowering photoperiodic response, although the populations had always been subjected to the same photoperiodic induction.

虽然同一个居群长期受到相同光周期诱导，但是种群不是有单一相近的开花期，存在着开花光周期反应不同的基因型。

3.The respose was not caused by the effects of temperature, photosynthetic duration or pre-flowering photoperiodic after-effect but was typical photoperiodism.

这种反应属于典型的光周期现象，而不是由温度的替代作用、光合时间的改变或前期短日后效应引起的。

4.The effects of pre- flowering photoperiodic treatments on the post-flowering-development, yield formation and chemical quality of soybeans were studied.

试验研究了开花前不同光照处理对大豆开花后的发育、产量形成和品质性状的影响。

5.It was proposed that both pre-and post-flowering photoperiodic responses in soybeans were related to the expression of certain genes.

作者认为，大豆开花前后的光周期反应都与某些特定基因的表达有关。

6.Photoperiodic responses of SR are distinct in closely related species inhabiting overlapping but different micro habitats.

在相同区域中，不同生存微环境的近缘种类的有性生殖的光周期反应有所不同。

7.Phytochromes mediate the photoperiodic control of flowering in rice (Oryza sativa), a short-day plant.

水稻是一种短日照植物，光敏色素参与了光周期调控的水稻开花。

8.Study on photoperiodic regulation of reproductive seasonality of Guandong greylag geese;

研究了光照对马岗鹅季节性繁殖活动和内分泌的调控。

9.The second photoperiodic reaction is controlled by a recessive gene.

第二光周期反应属一对主效隐性基因控制。

10.Study on photoperiodic regulation of reproductive seasonality of Guangdong greylag geese.

研究了光照对广东灰鹅季节性繁殖活动和内分泌的调控。

11.Many plants are classified as photoperiodic 光周期性的, meaning their flowering is triggered by the length of daylight.

许多植物被归类为光周期性的，这意味着它们的开花是由日照长度触发的。

12.Farmers often choose photoperiodic 光周期性的 crops to maximize their harvest based on seasonal light changes.

农民常常选择光周期性的作物，以根据季节性光线变化最大化收成。

13.The photoperiodic 光周期性的 response of certain animals influences their breeding cycles.

某些动物的光周期性的反应影响它们的繁殖周期。

14.Understanding photoperiodic 光周期性的 behavior can help in managing greenhouse environments.

理解光周期性的行为有助于管理温室环境。

15.Some species of fish exhibit photoperiodic 光周期性的 spawning patterns that align with seasonal changes.

一些鱼类展现出与季节变化一致的光周期性的产卵模式。

作文

The concept of photoperiodic responses is crucial in understanding how plants and animals adapt to their environments. Essentially, photoperiodic refers to the physiological reactions of organisms to the length of day or night. This phenomenon plays a significant role in various biological processes, including flowering in plants and breeding cycles in animals. For instance, many flowering plants require specific day lengths to trigger blooming. These plants can be categorized as long-day or short-day species, depending on whether they flower when days are longer or shorter than a certain duration. The ability to detect changes in light is vital for their survival and reproduction. In the animal kingdom, photoperiodic cues also determine reproductive behaviors. Many birds, for example, rely on the length of daylight to time their mating seasons. As spring approaches and days grow longer, birds become more active and begin courtship rituals. This synchronization with the seasons ensures that their offspring are born when food is abundant, enhancing their chances of survival. Similarly, some mammals exhibit photoperiodic behaviors by entering hibernation during the shorter days of winter, conserving energy until the environment becomes favorable again. Understanding photoperiodic mechanisms has practical applications in agriculture and horticulture. Farmers can manipulate light conditions to induce flowering in crops, optimizing yields and ensuring that produce is available at the right time. For example, greenhouse growers often use artificial lighting to extend the day length for certain plants, allowing them to flower out of season. This practice not only enhances productivity but also meets market demands for fresh flowers and vegetables year-round. Moreover, the study of photoperiodic responses has implications for climate change research. As global temperatures rise and weather patterns shift, the natural cues that organisms rely on may be disrupted. This shift could lead to mismatches in timing between species, affecting food chains and ecosystem stability. For instance, if insects emerge earlier due to warmer temperatures but their avian predators do not adjust their breeding schedules accordingly, it could result in food shortages for those birds. Thus, understanding photoperiodic responses is essential for predicting how species will respond to ongoing environmental changes. In conclusion, the term photoperiodic encapsulates a fundamental aspect of life on Earth. It highlights the intricate connections between organisms and their environment, emphasizing the importance of light in regulating biological rhythms. As we continue to explore the effects of climate change and human intervention on natural systems, a deeper understanding of photoperiodic mechanisms will be vital for conservation efforts and sustainable practices. By appreciating these relationships, we can better protect the delicate balance of our ecosystems and ensure the survival of diverse species for generations to come.

“光周期性”这一概念对于理解植物和动物如何适应其环境至关重要。简单来说，光周期性是指生物对昼夜长度的生理反应。这一现象在多种生物过程中的作用显著，包括植物的开花和动物的繁殖周期。例如，许多开花植物需要特定的日长来触发开花。这些植物可以根据它们在白天较长或较短的时间开花的需求被分类为长日照或短日照物种。能够检测光线变化对它们的生存和繁殖至关重要。 在动物王国中，光周期性信号也决定了繁殖行为。许多鸟类例如依赖日照的长度来安排交配季节。随着春季的临近和白天变长，鸟类变得更加活跃并开始求偶仪式。这种与季节的同步确保了它们的后代在食物丰富时出生，从而提高了生存的机会。同样，一些哺乳动物通过在冬季短日照期间进入冬眠来表现出光周期性行为，以节省能量，直到环境再次变得有利。 理解光周期性机制在农业和园艺中具有实际应用。农民可以操控光照条件以引导作物开花，优化产量并确保产品在合适的时间可用。例如，温室种植者通常使用人造照明来延长某些植物的日照时间，使它们在非季节开花。这一做法不仅提升了生产力，还满足了市场对新鲜花卉和蔬菜的全年需求。 此外，光周期性反应的研究对气候变化研究具有重要意义。随着全球气温上升和天气模式的变化，生物依赖的自然信号可能会受到干扰。这种变化可能导致物种之间的时机错位，影响食物链和生态系统的稳定性。例如，如果昆虫由于温暖的气温提前出现，但它们的捕食者鸟类没有相应地调整繁殖时间表，这可能导致这些鸟类的食物短缺。因此，理解光周期性反应对于预测物种如何响应持续的环境变化至关重要。 总之，光周期性这一术语概括了地球生命的一个基本方面。它突显了生物与其环境之间的复杂联系，强调了光在调节生物节律中的重要性。随着我们继续探索气候变化和人类干预对自然系统的影响，深入理解光周期性机制将对保护工作和可持续实践至关重要。通过欣赏这些关系，我们可以更好地保护生态系统的微妙平衡，并确保各种物种的生存，惠及未来的世代。