hexaploid

简明释义

英[ˈheksəˌplɔɪd]美[ˈheksəplɔɪd]

adj. 六倍体的，有六组同源染色体的；（有机体或物种）由六倍细胞体组成的

n. （生物、变种或物种）六倍体

英英释义

单词用法

同义词

反义词

例句

1.However, there is no complete waxy mutant in hexaploid wheat under the natural condition and it need to be produced artificially.

然而，在自然条件下六倍体小麦中则无全糯质小麦存在，需要人工创造。

2.The genetic diversity between Chinese endemic wheat landraces and other populations of hexaploid wheat was systematically analyzed. As compared with t.

首次对中国特有小麦与其他不同类型六倍体小麦之间的遗传差异进行了系统分析。

3.They are complex polyploids, being partly tetraploid and partly hexaploid.

它们是复杂的多倍体，其中一部分是四倍体，一部分是六倍体。

4.The male-sterile plants from the crosses between dominant male-sterile hexaploid triticale and durum wheat as well as bearded wheat were backcrossed many times with the same male parents.

用已育成的显性雄性不育六倍体小黑麦为母本分别与硬粒小麦、二粒小麦及黑麦杂交，并每代选不育株用原父本回交。

5.The number of chloroplast and chlorophyll content in the dodecaploid are more than hexaploid, stomatal density are lower than hexaploid.

同时，十二倍体较六倍体的叶绿体数目明显增多，叶绿素含量提高，但气孔密度减小。

6.The male-sterile plants from the crosses between dominant male-sterile hexaploid triticale and durum wheat as well as bearded wheat were backcrossed many times with the same male parents.

用已育成的显性雄性不育六倍体小黑麦为母本分别与硬粒小麦、二粒小麦及黑麦杂交，并每代选不育株用原父本回交。

7.Researchers have discovered that the hexaploid nature of certain plants contributes to their adaptability.

研究人员发现某些植物的六倍体特性有助于它们的适应性。

8.In agriculture, hexaploid species like Triticum aestivum are crucial for bread production.

在农业中，像Triticum aestivum这样的六倍体物种对面包生产至关重要。

9.The genetic study focused on the hexaploid genome of the plant to understand its traits.

这项基因研究集中在植物的六倍体基因组上，以了解其特征。

10.The wheat variety we are studying is a hexaploid, meaning it has six sets of chromosomes.

我们正在研究的小麦品种是一个六倍体，这意味着它有六套染色体。

11.Many cultivated crops are hexaploid, which allows for greater genetic diversity.

许多栽培作物都是六倍体，这允许更大的遗传多样性。

作文

Understanding the concept of genetic variations is crucial in the field of biology, especially when we delve into the realm of plant genetics. One fascinating term that often comes up in this context is hexaploid, which refers to an organism or a cell that contains six complete sets of chromosomes. This condition is particularly significant in certain species of plants, such as wheat, which is a staple food for a large portion of the world's population. The term itself is derived from the Greek prefix 'hexa-', meaning six, and 'ploid', which pertains to the number of sets of chromosomes. The significance of hexaploid organisms cannot be understated, as they often exhibit unique traits that can be beneficial for agricultural practices. For instance, hexaploidy in wheat contributes to its robustness and adaptability, allowing it to thrive in diverse environmental conditions. This genetic makeup enhances the plant's ability to resist diseases and pests, making it a vital resource for food security. In contrast to diploid organisms, which have two sets of chromosomes, or tetraploid organisms with four, hexaploids possess a greater genetic diversity. This diversity is essential for breeding programs aimed at improving crop yields and resilience against climate change.The process of polyploidization, which leads to the formation of hexaploid plants, can occur naturally or be induced through various methods such as chemical treatments. Understanding how these processes work enables scientists and farmers to manipulate plant genetics for better outcomes. For example, researchers may intentionally create hexaploid varieties of crops to enhance their nutritional value or increase their resistance to environmental stresses. Moreover, the study of hexaploid species provides insights into evolutionary biology. The presence of multiple sets of chromosomes can lead to increased gene redundancy, which may allow for greater evolutionary flexibility. As some genes become inactive due to mutations, others can take over their functions, potentially leading to new traits that can be advantageous for survival. This phenomenon is evident in various hexaploid species, where researchers observe significant variations in traits such as size, color, and yield.In conclusion, the term hexaploid encapsulates a vital aspect of genetic diversity and adaptability in the plant kingdom. Its implications extend beyond mere academic interest; they touch upon critical issues of food security and sustainability in agriculture. As we face global challenges like climate change and population growth, understanding and leveraging the characteristics of hexaploid organisms will be essential for developing resilient crop varieties that can feed the world. Thus, the study of hexaploidy not only enriches our knowledge of genetics but also equips us with the tools necessary for future agricultural innovations.

理解遗传变异的概念在生物学领域至关重要，特别是当我们深入植物遗传学时。一个常常出现的迷人术语是六倍体，它指的是含有六套完整染色体的生物或细胞。这种状态在某些植物物种中尤其重要，例如小麦，它是世界上大部分人口的主食。这个术语本身源于希腊前缀'hexa-'，意为六，和'ploid'，与染色体组数有关。
六倍体生物的重要性不容小觑，因为它们通常表现出独特的特征，这对农业实践是有益的。例如，小麦中的六倍体使其更加健壮和适应性强，使其能够在多种环境条件下生长。这种基因组成增强了植物抵抗疾病和害虫的能力，使其成为粮食安全的重要资源。与仅有两套染色体的二倍体生物或具有四套染色体的四倍体生物相比，六倍体生物具有更大的遗传多样性。这种多样性对旨在提高作物产量和应对气候变化的育种计划至关重要。
导致六倍体植物形成的多倍性过程可以自然发生，也可以通过化学处理等各种方法诱导。了解这些过程如何运作使科学家和农民能够操纵植物遗传学以获得更好的结果。例如，研究人员可能故意创建六倍体作物品种，以增强其营养价值或提高其对环境压力的抵抗力。
此外，对六倍体物种的研究提供了进化生物学的见解。多个染色体组的存在可能导致基因冗余的增加，这可能允许更大的进化灵活性。当一些基因由于突变而失活时，其他基因可以接管其功能，潜在地导致新的特征，这对生存可能是有利的。这种现象在各种六倍体物种中显而易见，研究人员观察到性状如大小、颜色和产量的显著变化。
总之，术语六倍体概括了植物王国中遗传多样性和适应性的一个重要方面。它的意义不仅仅是学术兴趣；它触及粮食安全和农业可持续性等关键问题。当我们面临气候变化和人口增长等全球挑战时，理解和利用六倍体生物的特征将对开发能够养活世界的抗逆作物品种至关重要。因此，研究六倍体不仅丰富了我们对遗传学的知识，也为我们提供了未来农业创新所需的工具。