A breeding programme must provide for a continual infusion of new genetic material into the population to avoid in-breeding.
一项育种计划，必须为把新的遗传种质不断地渗进育种种群提供条件，以避免近交。
The hope is that pandas can be released into small isolated wild populations that are in danger of being weakened by in-breeding.
散落各处的野生大熊猫种群的质量由于近亲繁殖已经岌岌可危，研究人员希望被放归的熊猫可以和这些熊猫融合在一起。
Selective breeding may result in a greyhound running faster and seeing better than a wolf.
选择育种可能会培育出一种比狼跑得更快、视力更好的灵缇。
To look upon firmly in the eye is considered a sign of ill breeding and is felt to be annoying.
盯着别人的眼睛看被认为是没有教养的表现，会让人觉得厌烦。
Under these circumstances, archaeologist Andrew Smith believes, the small herds of Bos primigenius in the desert became smaller, more closely knit breeding units as the drought took hold.
考古学家安德鲁·史密斯认为，在这些情况下，随着干旱的持续，沙漠中较小的原牛群会变成更小、联系更加紧密的繁殖单位。
As for the trout, Dr. Bradley says his fish have enough trouble breeding on their own for it to be unlikely that they would do well in the wild.
至于鳟鱼，布莱德利博士说，他的鱼在自行繁殖方面已经遇到了足够多的麻烦，因此它们不太可能在野外生存得很好。
Flaws in the system have created a breeding ground for financial scandals.
制度中的漏洞给金融丑闻的滋生提供了土壤。
The majority of them may have to find new breeding grounds in the future.
它们中的大多数在未来可能不得不寻找新的繁殖地。
The cells could be converted into germ cells for use in assisted breeding programmes to help diversify the gene pools of endangered species, she says.
细胞可以转换成用于协助繁殖项目的生殖细胞，以帮助增加濒危物种基因库里的品种。
It involved research in genetics, plant breeding, plant pathology, entomology, agronomy, soil science, and cereal technology.
它涉及遗传学、植物育种、植物病理学、昆虫学、农学、土壤科学和谷物技术的研究。
He collects the excrement from a panda breeding center in southern China.
他从中国南方的一个大熊猫繁殖中心收集其粪便。
Only a handful of islands in the Southern Ocean are suitable for sustaining large breeding colonies.
南大洋中只有少数岛屿适合大型群落繁衍生存。
Now, the island is one of only a handful of lesser flamingo breeding colonies in the world.
目前该岛是世界上为数不多的小火烈鸟繁殖基地之一。
But the foraging communities of the cultures in the region of the Don and Dnieper rivers took up stock breeding and began to exploit the neighboring steppes.
但是，顿河和第聂伯河流域的游牧部落开始从事家畜饲养，并开始开发邻近的大草原。
Because of their tremendous breeding potential and genetic diversity, many pests are known to withstand synthetic chemicals and bear offspring with a built-in resistance to pesticides.
由于害虫有巨大的繁殖潜力和基因多样性，许多害虫被认为能够抵抗合成化学物质，而且生育的后代对杀虫剂具有内在的抵抗力。
Such groups are the breeding grounds in which we acquire the norms and values that equip us for social life.
这种群体是我们的培养地，使我们获得社会生活必备的规范和价值，适应社会生活。
They were driven a few miles from a breeding center in northeastern Argentina to a 1.7-million-acre nature reserve called Gran Ibera Park.
他们从阿根廷东北部的一个繁殖中心乘车几英里，来到一个170万英亩的自然保护区——格兰伊维拉公园。
To mutate breeding with Penicillium chrysogenum in existing production in order to obtain stable high yield strain.
对现有生产中的产黄青霉进行育种突变，以获得稳定的高产菌株。
This farm engages in animal-breeding and agriculture.
这个农场农牧业都搞。
And the Global Entrepreneurship Monitor (GEM), produced by a consortium of academics, tries to measure countries' success in breeding new businesses.
由一批研究机构构成的全球创业观察(GEM)，试图测量一国在培育新产业方面的成功程度。
London zoo, along with other zoos in England, is currently involved in breeding programmes aimed at increasing Numbers of the species.
伦敦动物园与其他一些英国动物园正试图增加园内动物的种类。
Plant growth regulators are widely used in agriculture, both in breeding and in cultivation.
在农业生产中栽培和育种两个方面，化学调控技术都有广泛的应用价值。
He had much difficulty in breeding tropical plants in his garden.
他费了很大的劲在花园里培育热带植物。
The mechanisms of the relationship and its significance in breeding of the plants were discussed.
讨论了这种现象的原因及其在引种驯化工作中的意义。
Attention should be paid to selections of early parents in breeding work.
在育种工作中应注意早熟亲本的选择。
Methods The GTT (glucose tolerance test) and glycosuria test in breeding rhesus monkeys were used to choose the rhesus monkey model of the spontaneous diabetes.
方法从正常饲养猕猴种群中，采用葡萄糖耐量试验和尿糖测试实验方法，筛选自发性糖尿病模型。
SSR markers can be expected to complement existing RFLP maps, are useful for genotype identification, gene and QTL analysis, marker assisted selection in breeding and pedigree analysis.
大豆的微卫星标记可扩充现有的RFLP图谱，广泛应用于基因型鉴定，基因和QTL分析，分子标记辅助育种和家系分析等。
Described feathering alleles and its effect on some economic characters, and presented the application value and meaning in breeding quality table poultry.
综述了羽速基因及其对某些经经济性状的影响，并阐述了羽速基因在优质肉鸡育种中的应用价值与意义。
The use of anther culture to create double haploid (DH) lines is popular in breeding of self incompatibility lines of Brassica crops.
采用花药培养获得加倍单倍体(DH)是甘蓝类蔬菜自交不亲和系选育的主要方法之一。
The use of anther culture to create double haploid (DH) lines is popular in breeding of self incompatibility lines of Brassica crops.
采用花药培养获得加倍单倍体(DH)是甘蓝类蔬菜自交不亲和系选育的主要方法之一。
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