outcross

简明释义

英[ˈaʊtkrɒs]美[ˈaʊtˌkrɔːs]

n. 异型杂交的后代；异型杂交的过程

vt. 使……进行异型杂交

复 数 o u t c r o s s e s

第 三 人 称 单 数 o u t c r o s s e s

现 在 分 词 o u t c r o s s i n g

过 去 式 o u t c r o s s e d

过 去 分 词 o u t c r o s s e d

英英释义

单词用法

同义词

反义词

例句

1.The relation between different pollinating solution and seed set of outcross in the breed of wheat Mianyang31 1 was studied.

本文研究了不同成分的授粉液与小麦品种绵阳311异交结实的关系。

2.The relation between different pollinating solution and seed set of outcross in the breed of wheat Mianyang31 1 was studied.

本文研究了不同成分的授粉液与小麦品种绵阳311异交结实的关系。

3.To improve genetic diversity, many breeders choose to outcross 异交 their livestock with unrelated breeds.

为了提高遗传多样性，许多饲养者选择将他们的家畜与无关品种进行异交。

4.The horticulturist decided to outcross 异交 her roses to create a new hybrid variety.

园艺师决定对她的玫瑰进行异交，以创造一种新的杂交品种。

5.Farmers often outcross 异交 crops to enhance resistance to pests and diseases.

农民们经常通过异交作物来增强对害虫和疾病的抵抗力。

6.In order to prevent inbreeding, conservationists recommend that endangered species be outcrossed 异交 with other populations.

为了防止近亲繁殖，保护主义者建议将濒危物种与其他种群进行异交。

7.She plans to outcross 异交 her purebred dogs with a different breed for better health.

她计划将她的纯种犬与不同品种进行异交，以获得更好的健康。

作文

In the world of agriculture and animal breeding, the term outcross refers to the practice of introducing unrelated genetic material into a breeding program. This technique is essential for enhancing genetic diversity and improving the overall health and productivity of crops and livestock. For instance, when farmers outcross their plants with other varieties, they can produce offspring that are more resilient to diseases and environmental stresses. Similarly, in animal breeding, outcrossing can help prevent inbreeding depression, which is a reduction in biological fitness due to mating between closely related individuals. The benefits of outcrossing are numerous. Firstly, it can lead to hybrid vigor, also known as heterosis, where the offspring exhibit improved traits compared to their parents. This phenomenon is particularly advantageous in crop production, where farmers aim to achieve higher yields and better quality produce. For example, many commercial corn varieties are the result of outcrossing different strains to create hybrids that perform exceptionally well under various conditions. Moreover, outcrossing can contribute to the long-term sustainability of agricultural practices. By diversifying the genetic pool, farmers can ensure that their crops or livestock are less susceptible to pests and diseases. This is crucial in an era where climate change poses significant challenges to traditional farming methods. As environmental conditions shift, having a diverse gene pool allows for greater adaptability and resilience. However, outcrossing is not without its challenges. It requires careful planning and knowledge of genetics to ensure that the desired traits are passed on to the next generation. Farmers must also consider the potential risks of introducing new genes that may not be compatible with existing ones. This necessitates thorough research and sometimes even trial and error to find the right combinations that yield beneficial results. In addition to practical applications, outcrossing has implications for biodiversity conservation. By promoting genetic diversity, we can help preserve endangered species and maintain healthy ecosystems. Conservation programs often utilize outcrossing techniques to enhance the genetic variability of small populations, thereby increasing their chances of survival in the wild. In conclusion, the concept of outcross plays a pivotal role in modern agriculture and conservation efforts. By understanding and applying this practice, we can improve the health and productivity of our crops and livestock while also contributing to the preservation of biodiversity. As we face increasing environmental challenges, the importance of outcrossing will only continue to grow, making it a vital tool for future generations of farmers and conservationists alike.

外交配在农业和动物繁殖领域中指的是将无关的遗传材料引入繁殖计划的做法。这一技术对于增强遗传多样性以及改善作物和牲畜的整体健康和生产力至关重要。例如，当农民将他们的植物与其他品种进行外交配时，可以产生更能抵抗疾病和环境压力的后代。同样，在动物繁殖中，外交配可以帮助防止近亲繁殖抑制，这是一种因近亲个体交配而导致的生物适应性下降。 外交配的好处是众多的。首先，它可以导致杂交优势，也称为异质性，后代表现出比其父母更优越的特征。这一现象在作物生产中尤为有利，农民希望实现更高的产量和更好的产品质量。例如，许多商业玉米品种都是通过将不同品种进行外交配而产生的杂交种，在各种条件下表现出色。 此外，外交配还可以促进农业实践的长期可持续性。通过多样化基因库，农民可以确保他们的作物或牲畜对害虫和疾病的抵抗力降低。这在气候变化对传统农业方法构成重大挑战的时代尤为重要。随着环境条件的变化，拥有多样的基因库可以提高适应性和韧性。 然而，外交配并非没有挑战。它需要仔细的规划和遗传学知识，以确保所需特征能够传递到下一代。农民还必须考虑引入可能与现有基因不兼容的新基因的潜在风险。这需要深入的研究，有时甚至是试验和错误，以找到能够产生有益结果的正确组合。 除了实际应用，外交配对生物多样性保护也有重要意义。通过促进遗传多样性，我们可以帮助保护濒危物种并维持健康的生态系统。保护项目通常利用外交配技术来增强小种群的遗传变异性，从而提高它们在野外生存的机会。 总之，外交配的概念在现代农业和保护工作中发挥着关键作用。通过理解和应用这一做法，我们可以改善作物和牲畜的健康和生产力，同时也为生物多样性的保护做出贡献。随着我们面临越来越多的环境挑战，外交配的重要性将只会继续增长，使其成为未来农民和保护主义者的重要工具。