In this paper, efficiency of different short-term tree breeding strategies based on backward selection was studied when a new tree breeding 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。
At present, early test in tree breeding 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。
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.
我们能看到这个病毒的谱系，它的上代病毒是北卡罗莱纳州一个大型集约化动物农场的人工繁殖基地中演化出来的一个病毒。
At a breeding facility in Indonesia, baby green tree pythons (Morelia viridis) cling to perches that substitute for branches in their native tropical forests.
在印尼的一家饲养场，幼小的绿树蟒紧贴在代替天然热带森林树枝的栖木上。
Using generic markers speeds up old-fashioned breeding methods becauseyou no longer have to wait for the tree to grow up to see if it has the desiredtraits.
使用基因标记技术，可以加快旧式繁殖的速度，因为你不用等待树苗长大才能看到它是否带有那些你想要的特性。
The Diospyros used as fruit tree was discussed in aspect of economic value, the origins, history of culture, cultivar resources, cultivar development, traits heredity, and cultivar breeding.
以作为果树栽培的柿属植物为对象，对其经济价值、起源、栽培历史、品种资源、品种演化、性状遗传和品种选育等方面的研究现状和进展进行了较为详细的阐述。
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 fine varieties Breeding Center of HeZe peony is dedicated to developing fine varieties of tree peony and herbaceous peonies, spreading new technology powered by scientific research.
菏泽牡丹良种繁育中心以科研为动力、科技为依托，致力于牡丹、药良种的开发、技术的推广。
Chinese fir is the most important timber tree in south part of China, and the research of flowering characteristics and its breeding is one of the most active research area.
杉木是我国特有树种，也是我国最重要的用材树种。育种是杉木研究最活跃的领域之一。
Repeatabillity is the most important genetic parameter in tree clone breeding.
力是树木无性系育种中的一个重要参数。
At present, it has become the mostly researched tree species in tissue culture and biotechnology breeding.
目前，杨树已成为林木组织培养及生物技术育种中研究最多的树种之一。
At present, it has become the mostly researched tree species in tissue culture and biotechnology breeding.
目前，杨树已成为林木组织培养及生物技术育种中研究最多的树种之一。
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