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群体改良(Population 的答案

群体改良(Population Improvement)

名词解释题
2022-11-04 15:10
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正确答案

对变异群体进行周期性选择和重组来逐渐提高群体中有利基因和基因型的频率,以改进群体综合表现的育种方法。


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感兴趣题目
品种是指经过人工选育或者发现并经过改良,形态特征和生物学特征一致,()相对稳定的植物群体。

()involves comparing actual or planned project practices to those of other projects to generate ideas for improvement and to provide a basis by which to measure performance. These other projects can be within the performing organization or outside of it, and can be within the same or in another application area.

Do you want to pay cash or sign the bill?这句话意思是()。

影响作物分布的因素:作物分布与作物的生物学特性、()、()、()、()和社会需求因素等有关。
P-P间期逐渐缩短直到P波受阻,ORs波群脱落()
选择育种的基本原理是作物品种的()和()。

— Which city has _________population, Beijing, Guiyang or Nanchang?

— Beijing, of course.

Quality planning tools are often used to help plan effective quality management activities . ()is one of such tools, which involves company actual or planned project practices to those or other projects to generate ideas for improvement and to provide a basis by which to measure performance.

Project selection methods involve measuring value or attractiveness to the project owner or sponsor and may include other organizational decision criteria ()is not a project selection method.

作物诱变育种中,主要处理植物的()

() are individuals and organizations that are actively involved in the project, or whose interests may be affected as a result of project execution or project completion.

群体改良(Population Improvement)

相关题目

() are individuals and organizations that are actively involved in the project, or whose interests may be affected as a result of project execution or project completion.

No more having to buy expensive textbooks which you will only use for a year or two and then sell or _______ away. 

— Is it better to be physically attractive or intelligent?

   —                      

— Do you prefer a portable or a clumsy 3D printer?

                     .

Goods are carried by several        of transport--on road or rail, by sea or air.

You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.

— ___________________

— Once or twice a week.

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

— Which city has _________population, Beijing, Guiyang or Nanchang?

— Beijing, of course.

A rectangular area that can contain a document, program, or message.

Graphic representations for a program, type of file, or function .

_____she comes or not makes no difference.

— I wonder whether I could accept this discount or not.

—                      

2002年新配方口服补液盐(ORS)溶液的张力是

诱变育种是指利用各种诱变剂处理微生物细胞,提高基因的随机(  ),通过一定的筛选方法获得所需要的高产优质菌株。    

在育种历史上,大幅度提高了作物单位面积产量的育种途径是哪些?()。
作物育种的基本任务是()。
适宜于改良品种的个别性状的育种方法是
An improvement in eithercapital turnover or return on sales, without changing the other, will alsoimprove the:
biomembrane,or biological membrane (生物膜)
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