In this paper, efficiency of different short-term treebreeding strategies based on backward selection was studied when a new treebreeding project was initiated.
主要研究在启动一项林木育种项目时，基于后向选择的不同短期林木育种策略的效率。
2
At present, early test in treebreeding is often used in order to shorten breeding term and provide the excellent materials for forest production as soon as possible.
目前为了尽快的缩短林木育种周期并为林业生产尽早地提供优良繁殖材料，经常采用的方法就是林木早期测定。
3
We can see its family tree - and its daddy was a virus that evolved in the artificial breeding ground of a vast factory farm in North Carolina.