Selection differential and genetic gains are also estimated.
计算了优树的选择差和遗传增益。
A new idea served for study on genetic gains of multiple character and estimation of basic population size was represented in the paper.
为作物育种中多性状遗传进度研究及群体规模估计提出了新的设想。
The genetic gains of 17.8%, 18.6% and 18.7% would be got when 50 plus families were primarily selected based on DBH, height and volume respectively.
根据胸径、树高和材积进行优良家系的初步选择，选择前50个优良家系所获得的遗传增益分别为17.8%、18.6%和18.7%。
Genetic variation and genetic gains of several principal characters of two strains were estimated, then the possibility of re-selection was discussed.
研究了几个主要性状的遗传变异和选择潜力，探讨了性状再选择的可能性。
The genetic gains of superior families selected by progeny tests on early tree height, diameter breast-high and volume growth were 8.24%, 14.33% and 24.16% respectively.
通过子代测定选出的优良家系，其有性后代在树高、胸径和材积早期生长的遗传增益分别为8.24%，14.33%和24.16%。
Breeding groups are being used to control inbreeding in a breeding population and to effectively achieve maximum genetic gains in some tree improvement programs of the United States.
在美国的一些林木育种项目中，育种群已用来控制种子园的近交、捕获最大的遗传增益的有效措施。
The second reason for expecting further gains is that recent genetic analysis could improve breeding dramatically.
期望进一步增加的第二个原因是，基因分析可以大大提高育种。
The second reason for expecting further gains is that recent genetic analysis could improve breeding dramatically.
期望进一步增加的第二个原因是，基因分析可以大大提高育种。
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