A bulk progeny test is a simple way to learn the effectiveness of mass selection.
集团后代测验是了解混合选择有效性的一个简单方法。
The genetic quality of the parents can be judged with much greater certainty than in mass selection.
亲本的遗传品质比起混合选择来，能判断得更加确切。
Responses of main characters of upland cotton to mass selection-mass crossing breeding system were studied.
研究了陆地棉主要性状对混选—混交育种体系的响应。
Phenotypic mass selection for improvement of scab resistance was effective and feasible in a wheat gene pool.
应用表型混合选择改良小麦基因库抗赤性是有效可行的。
The program of the new cotton breeding method of mass selection-mass crossing is described and the results of breeding cotton is presented in this paper.
本文详细叙述了棉花混选—混交新育种方法的程序及其育种效果。
Only little intensive mass selection was carried out during the culture after it is extended to all over the country, which result in large differences between individuals.
由于各方面的原因，建鲤进入大面积推广后，在繁育过程仅开展了强度很小的群体选育，导致了建鲤生长性状的个体差异增大。
Only little intensive mass selection was carried out during the culture after it is extended to all over the country, which result in large differences between individuals.
由于各方面的原因，建鲤进入大面积推广后，在繁育过程仅开展了强度很小的群体选育，导致了建鲤生长性状的个体差异增大。
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