hexaploidy

简明释义

英[hɛkˈsæplɔɪdi]美[hɛkˈsæplɔɪdi]

n. 六倍性

英英释义

单词用法

同义词

反义词

例句

1.While the relationship between the resistance to preharvest sprout and its glume hardness has not been revealed in synthetic hexaploidy wheat.

然而，人工合成小麦的穗发芽抗性与其颖壳硬度的关系尚不清楚。

2.While the relationship between the resistance to preharvest sprout and its glume hardness has not been revealed in synthetic hexaploidy wheat.

然而，人工合成小麦的穗发芽抗性与其颖壳硬度的关系尚不清楚。

3.The phenomenon of hexaploidy (六倍体) can complicate breeding programs due to the complexity of genetic interactions.

由于遗传相互作用的复杂性，hexaploidy（六倍体）现象可能会使育种计划变得复杂。

4.Certain crops are bred specifically for hexaploidy (六倍体) traits to enhance their resistance to diseases.

某些作物专门培育具有hexaploidy（六倍体）特征，以增强其对疾病的抵抗力。

5.Researchers are investigating the benefits of hexaploidy (六倍体) in wheat, as it may lead to higher yields.

研究人员正在调查hexaploidy（六倍体）在小麦中的好处，因为这可能导致更高的产量。

6.In some species of fish, hexaploidy (六倍体) has been linked to increased size and growth rates.

在某些鱼类物种中，hexaploidy（六倍体）与体型增大和生长速率加快有关。

7.The study of plant genetics often reveals that many species exhibit hexaploidy (六倍体), which can contribute to their adaptability.

植物遗传学的研究常常表明，许多物种表现出hexaploidy（六倍体），这可以增强它们的适应能力。

作文

In the realm of genetics, the term hexaploidy refers to a condition in which an organism possesses six complete sets of chromosomes. This phenomenon is particularly significant in the study of plant biology, where many species exhibit polyploidy—having more than two sets of chromosomes. In fact, hexaploidy is commonly observed in certain types of wheat, such as Triticum aestivum, which is one of the most widely cultivated crops worldwide. Understanding the concept of hexaploidy is crucial for researchers and agricultural scientists as it plays a vital role in the evolution, adaptation, and breeding of various plant species.The process of polyploidy can occur through several mechanisms, including whole-genome duplication, hybridization between different species, or errors during cell division. When an organism becomes hexaploid, it has inherited three pairs of homologous chromosomes from each parent, resulting in a total of six chromosome sets. This genetic arrangement can lead to increased genetic diversity, which may enhance the organism's ability to adapt to different environmental conditions.One of the implications of hexaploidy in agriculture is its contribution to crop improvement. Polyploid plants often exhibit traits such as larger size, greater resilience to diseases, and improved yield. For instance, the hexaploid wheat variety has been bred to withstand harsh weather conditions and pests, making it a staple food source for millions of people. The increased chromosome number allows for greater genetic variation, which can be harnessed by breeders to develop new varieties that are more productive and sustainable.Moreover, studying hexaploidy provides insights into the evolutionary history of species. Many modern crops are derived from ancient polyploid ancestors, and understanding these relationships can help scientists trace the lineage and domestication processes of various plants. By analyzing the genomes of hexaploid organisms, researchers can identify specific genes responsible for desirable traits, paving the way for genetic engineering and biotechnology applications.However, hexaploidy is not without its challenges. While having multiple sets of chromosomes can be beneficial, it can also lead to complications in reproduction and genetic stability. In some cases, hexaploid organisms may experience difficulties in meiosis, the process by which gametes are formed, leading to reduced fertility. This is particularly evident in some animal species, where polyploidy can result in developmental issues or even sterility.In conclusion, the concept of hexaploidy is an essential aspect of genetics and plant biology. Its significance in agriculture, evolutionary studies, and genetic research cannot be overstated. As scientists continue to explore the complexities of polyploidy, our understanding of how hexaploidy affects plant traits and adaptability will undoubtedly contribute to advancements in crop science and sustainability. With the growing global population and the challenges posed by climate change, harnessing the potential of hexaploidy could be key to ensuring food security and developing resilient agricultural systems for the future.

在遗传学领域，术语六倍体指的是一种生物拥有六套完整染色体的状态。这一现象在植物生物学研究中尤为重要，因为许多物种表现出多倍性，即拥有超过两套染色体。事实上，六倍体在某些类型的小麦中常见，例如小麦（Triticum aestivum），它是全球种植最广泛的作物之一。理解六倍体的概念对研究人员和农业科学家至关重要，因为它在各种植物物种的进化、适应和育种中发挥着重要作用。多倍性过程可以通过几种机制发生，包括全基因组复制、不同物种之间的杂交或细胞分裂过程中的错误。当一个生物成为六倍体时，它从每个父母那里继承了三对同源染色体，导致总共六套染色体。这种遗传排列可以导致遗传多样性的增加，这可能增强生物适应不同环境条件的能力。六倍体在农业中的一个重要影响是它对作物改良的贡献。多倍体植物通常表现出更大的体型、更强的抗病性和更高的产量。例如，六倍体小麦品种已经被培育以抵御恶劣的天气条件和害虫，使其成为数百万人的主食来源。增加的染色体数量允许更大的遗传变异，育种者可以利用这一点来开发更具生产力和可持续性的新品种。此外，研究六倍体为我们提供了对物种进化历史的深入了解。许多现代作物源自古老的多倍体祖先，理解这些关系可以帮助科学家追溯各种植物的谱系和驯化过程。通过分析六倍体生物的基因组，研究人员可以识别负责特定优良性状的基因，为基因工程和生物技术应用铺平道路。然而，六倍体并非没有挑战。虽然拥有多套染色体可能是有益的，但也可能导致生殖和遗传稳定性方面的并发症。在某些情况下，六倍体生物可能在减数分裂过程中遇到困难，导致生育能力降低。这在一些动物物种中尤为明显，其中多倍性可能导致发育问题甚至不育。总之，六倍体的概念是遗传学和植物生物学的重要组成部分。它在农业、进化研究和遗传研究中的重要性不容低估。随着科学家们继续探索多倍性的复杂性，我们对六倍体如何影响植物性状和适应性的理解无疑将有助于作物科学和可持续发展的进步。面对全球人口增长和气候变化带来的挑战，利用六倍体的潜力可能是确保粮食安全和开发未来可持续农业系统的关键。