我们过去都是靠种籽来培育新一代的种苗，但世界银行建议采取无性系种苗扦插技术，这样产生的种苗遗传增益高多了。
We used to rely on seeds to grow the next generation of trees but the World Bank proposed the use of cloning seedlings. This led to a much higher yield.
体细胞无性系变异已获得一些作物专利，并以此作为一种手段来产生可供选择的遗传变异，且假定该作物一旦移植生长，它的基因稳定。
Somaclonal variation has been patented in some crops as a means of producing genetic variability for selection, and it was assumed that the crops were genetically stable once established.
杉木无性系性状的遗传控制。
对55个杉木无性系管胞微纤丝角的遗传变异进行了研究。
Genetic variations on tracheid microfibril Angle of 55 Chinese fir clones were investigated.
开展栓皮栎体胚发生再生植株研究，对栓皮栎优良无性系快繁、遗传改良和基因资源保存具有重要意义。
It is very important to quickly propagation excellent clones, genetic improvement and gene resource preservation through somatic embryogenesis plant regeneration for this species.
无性系扦插生根性状的重复力为0.34，表明生根性状受近中等遗传控制；
The repeatability of rooting traits in clones was 0.34, which showed that the root traits are under genetic control nearly at the moderate level.
对广西杉木无性系的总花量与树高、胸径、冠幅、冠高、树冠表面积进行了遗传相关及通径分析分析表明：总花量与生长性状之间的遗传相关系数均为负值；
The gross flowers and height, diameter, crown width, crown height, crown surface of Chinese fir clones in Guangxi area were investigated by genetic correlation analysis and path-coefficient analysis.
广义遗传力变化为0.734~0.867，微纤丝角无性系间的差异受很强的遗传控制；
The broad sense heritability estimates of clones varied between 0.734 and (0.867), indicating the microfibril angle was under strong genetic control.
用五种遗传稳定型分析方法对四个区域化试验点的5个美洲黑杨无性系生长量的基因型与环境交互作用进行了分析。
The genotype-environment interaction of 4-year DBH growth was analyzed in 4 locations for 5 cottonwood clones by using 5 genetic stability analysis methods.
用五种遗传稳定型分析方法对四个区域化试验点的5个美洲黑杨无性系生长量的基因型与环境交互作用进行了分析。
The genotype-environment interaction of 4-year DBH growth was analyzed in 4 locations for 5 cottonwood clones by using 5 genetic stability analysis methods.
应用推荐