back cross breeding

简明释义

回交育种

英英释义

例句

1.The research focused on the effectiveness of back cross breeding in livestock improvement.

研究集中在回交育种在牲畜改良中的有效性。

2.By employing back cross breeding, the team successfully increased the yield of the new variety.

通过采用回交育种，团队成功提高了新变种的产量。

3.Farmers often use back cross breeding to introduce disease resistance into their crops.

农民们经常使用回交育种将抗病性引入他们的作物中。

4.Through back cross breeding, they aimed to restore the original characteristics of the breed.

通过回交育种，他们旨在恢复该品种的原始特征。

5.The scientists implemented back cross breeding to enhance the traits of the hybrid plants.

科学家们实施了回交育种以增强杂交植物的特性。

作文

Back cross breeding is a significant technique used in genetics and agriculture to enhance specific traits in plants and animals. This method involves crossing a hybrid organism with one of its parent species or a genetically similar organism. The primary goal of back cross breeding (回交育种) is to introduce desirable characteristics from the parent into the offspring while maintaining the overall genetic makeup of the original line. This technique has been widely adopted for various purposes, including improving crop yields, disease resistance, and livestock quality.One of the most common applications of back cross breeding (回交育种) is in agriculture, particularly in the development of new plant varieties. Farmers and scientists often seek to create crops that can withstand harsh environmental conditions, such as drought or pests. By using back cross breeding (回交育种), they can take a hybrid plant that exhibits some desirable traits and cross it back with one of its parent plants to reinforce these traits in subsequent generations. For instance, if a hybrid corn plant has high yield but is susceptible to a particular pest, researchers might cross it with a parent plant known for its pest resistance. The resulting offspring would ideally inherit both high yield and pest resistance, making them more viable for farmers.In animal breeding, back cross breeding (回交育种) plays a crucial role in enhancing specific traits in livestock. Breeders often want to improve characteristics such as milk production in cows or growth rate in chickens. By carefully selecting which animals to cross, breeders can produce offspring that not only exhibit desired traits but also maintain the genetic diversity necessary for a healthy population. For example, a farmer might have a hybrid cow that produces a large quantity of milk but lacks certain desirable traits from its parent breeds. Through back cross breeding (回交育种), the farmer can cross this hybrid with one of its parent breeds to enhance those missing traits while still benefiting from the high milk production of the hybrid.The success of back cross breeding (回交育种) relies heavily on the understanding of genetics and the careful selection of parent organisms. It is essential for breeders to have a clear idea of which traits they wish to enhance and how these traits are inherited. Additionally, monitoring the genetic variation in the offspring is crucial to ensure that the desired traits are being passed down effectively without introducing unwanted genetic issues.Despite its advantages, back cross breeding (回交育种) is not without challenges. One potential issue is the risk of inbreeding, which can lead to a decrease in genetic diversity and an increase in susceptibility to diseases. Therefore, it is vital for breeders to balance the benefits of back cross breeding (回交育种) with the need to maintain a healthy genetic pool.In conclusion, back cross breeding (回交育种) is a powerful tool in the fields of agriculture and animal husbandry. By strategically crossing hybrids with parent species, breeders can enhance desirable traits while preserving genetic diversity. As the demand for food continues to rise, the importance of techniques like back cross breeding (回交育种) will only grow, helping to ensure a sustainable future for agriculture and livestock production.

回交育种是一种在遗传学和农业中使用的重要技术，用于增强植物和动物的特定性状。这种方法涉及将杂交生物与其一个亲本物种或基因相似的生物交叉。回交育种的主要目标是将亲本中的可取特征引入后代，同时保持原始品系的整体遗传构成。这项技术已被广泛应用于多种目的，包括提高作物产量、抗病能力和牲畜质量。在农业中，回交育种的一个常见应用是开发新的植物品种。农民和科学家通常希望创造出能够抵御恶劣环境条件（如干旱或害虫）的作物。通过使用回交育种，他们可以选择一种表现出一些可取特征的杂交植物，并将其与一个亲本植物交叉，以在后代中强化这些特征。例如，如果一种杂交玉米植物具有高产量但易受特定害虫侵袭，研究人员可能会将其与一种以抗虫性著称的亲本植物交叉。结果后代理想情况下将同时继承高产量和抗虫性，使其对农民更具可行性。在动物育种中，回交育种在增强牲畜特定性状方面发挥着重要作用。育种者通常希望提高奶牛的奶产量或鸡的生长速度等特征。通过仔细选择交配的动物，育种者可以产生不仅表现出所需特征而且保持健康种群所需的遗传多样性的后代。例如，农民可能拥有一种产奶量很大的杂交奶牛，但缺乏其亲本品种的一些可取特征。通过回交育种，农民可以将这种杂交牛与其一个亲本品种交叉，以增强那些缺失的特征，同时仍然受益于杂交牛的高产奶量。回交育种的成功在很大程度上依赖于对遗传学的理解和对亲本生物的谨慎选择。育种者必须清楚他们希望增强哪些特征，以及这些特征是如何遗传的。此外，监测后代的遗传变异对于确保所需特征有效传递而不引入不必要的遗传问题至关重要。尽管有其优势，回交育种并非没有挑战。一个潜在的问题是近亲繁殖的风险，这可能导致遗传多样性的减少和对疾病的易感性增加。因此，育种者必须平衡回交育种的好处与维持健康遗传库的需要。总之，回交育种是农业和畜牧业领域的一种强大工具。通过战略性地将杂交种与亲本物种交叉，育种者可以增强可取特征，同时保持遗传多样性。随着对食品需求的不断增加，像回交育种这样的技术的重要性将只会增加，有助于确保农业和牲畜生产的可持续未来。