The unusual cross became popular among breeders at the end of the 1990s.

在20世纪90代末，这种稀有的品种在育种者中流行开来。

Jamie says Kalettes were the result of blue-sky breeding.

杰米说Kalette天马行空的育种结果。

Today many people think of the Rottweiler breed as a 'giant breed' and some breeders strive unwisely to breed extra-large dogs.

直至今日，许多人仍认为罗威纳犬“巨型品种”，些育种者更盲目试图培育超大型犬。

One was the method of selective breeding.

种选择育种的方法。

He said the African Plant Breeding Academy will work on many different kinds of plants.

表示非洲植物育种学院将研究多种作物。

The seeds were re-grown and returned to the Svalbard vault last year.

种子经过重新育种后，于去被送回斯瓦尔巴种子。

Crossbreeding would continue until researchers developed an apple with the desired qualities of both varieties.

杂交育种将继续进行，直到研究人员培育出兼具两品种理想特性的苹果。

And they also don't fight to access breeding partners.

它们也不会为了获得育种伴侣而争斗。

Some animal rights supporters dislike dog breeding and the market for purebreds.

些动物权利支持者不喜欢狗的育种和纯种狗的市场。

The endangered species wouldn't exist without nationwide breeding program.

该濒危物种只有靠全国育种计划才能生存下来。

Unlike much produce sold in the supermarket, modern peaches aren't the result of selective breeding.

与超市出售的许多产品不同，现代桃子不选择性育种的结果。

Though the engineering of genomes for agricultural purposes has, in the view of many, got off to a rocky start, new techniques can cut to the chase, circumventing the requirement for generations of selective breeding.

尽管在许多人看来，用于农业目的的基因组工程起步并不顺利，但这些新技术可以直接切入关键点，不再需要经历几代的选择性育种来达到目的。

Advocates contend that the environmental advantages of organic agriculture far outweigh the lower yields, and that increasing research and breeding resources for organic systems would reduce the yield gap.

支持者认为，有机农业的环境优势远远超过了低产这劣势，而增加对有机系统的研究和育种资源将缩小产量差距。

At that time, many people believed in eugenics, the idea that desirable and undesirable genetic traits could and should be controlled in humans through selective breeding.

当时，很多人都相信优生学（eugenics），形容理想和不理想的遗传性状可以且应该通过选择性育种来控制。

[Barry] With innovation around these issues in mind, we went to speak with Michela, a rice breeder to learn about how she was approaching these challenges.

带着围绕这些问题进行创新的想法，我们去采访了水稻育种家米凯拉，了解她如何应对这些挑战的。

The primary breeders maintain and develop the quality of the genetic stock within the population by selection of the most suitable individuals.

初级育种家通过选择最适的体来保持和发展群体内遗传物质的质量。

They also agreed to carry out more cooperation in the fields such as biomedicine, biological breeding, moon and Mars exploration and satellite research and development.

双方还同意在生物医药、生物育种、球和火星探测、卫星研发等领域开展更多作。

The fourth paragraph, which we will focus on a little bit more for the sake of this specific question, is selective breeding and natural selection.

第四段，为了这题，我们将更多地关注选择性育种和自然选择。

So, to complement plant breeding, scientists have developed new biotechnology tools — which are exactly what they sound like: technological inventions using living things.

因此，为了补充植物育种，科学家们开发了新的生物技术工具——正如它们的名字样：利用生物进行技术发明。

For thousands of years we humans have used selective breeding to create animals and plants with properties that have been useful for us.

“数千来，我们人类利用选择性育种培育出了带有特性的动植物，而这些特性有利于我们。