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汉语拼音：yù zhǒng

培育动植物新品种。即利用天然变异或杂交、电离辐射、秋水仙素等理化因素人工创造变异，经选择培育出新品种。

1. 用人工方法选育动、植物的新品种。对于优生常有决定作用。

• Breeding has produced types of wheat which can be grown in the north.

  通过育种已培养出可在北方种植的小麦品种.

• Mendel tried crossbreeding.

  孟德尔尝试了杂交育种。

• Cultivar development may come to rely more upon the non - institutional peach breeders.

  品种发展也许最终将更多地依靠非专业的桃育种工作者.

• Large improvements in potential yields of maize have occurred through breeding programs.

  通过育种使玉米获得了很大的增产潜力.

• We should not expect enduring success from a breeding effort.

  我们不能不期望从育种努力中得到十分的成功.

• In dry areas an organic sheet may be helpful and improve survival.

  在干旱地区用有机质纸张育种有助于提高成活率.

• Relatively few foresters or tree breeders consider the presence of edaphic ecotypes.

  考虑到存在土壤生态型的林学家或树木育种家相当少.

• Several plant breeding texts describe the classical methods in detail.

  一些植物育种专著详细地论述了经典的方法.

• Most agricultural crops are bred for their seed, seed appendage, or fruit.

  大多数农作物的育种是为了种子, 种子附属物, 或果实.

• That's important because breeding could dilute the qualities that make a pig medically useful.

  这极为重要,因为育种能冲淡猪的特性,这使猪能在医学上更有用.

• The selection methods applied in soybeen breeding are those used in improving autogamous plant species.

  大豆育种工作中应用的选择方法即是那些用于改良自花授粉植物的方法.

• Such estimates can aid the breeder by pointing to conflicting trends in relation to selection.

  这种估算可以帮助育种工作者指出关于选择相反的趋向.

• Many different breeding schemes can be used to develop a base for advanced - generation selections.

  为了奠定下一代选育材料的基础,可以采用多种不同的育种方案.

• The management history includes nutrition, breeding policy and practice, housing, transport and general handling.

  管理史包括营养 、 育种方针及其作法 、 棚圈 、 运输和一般管理.

• Most characters of economic value to plant and animal breeders are metric characters.

  对植物和动物育种家具有经济价值的大多数性状是一些度量性状.