美棘蓟马孤雌生殖产生的子代个体均为雄性；
The offspring through parthenogenesis of E. americanus are all male.
通过这种方式，增加了较优秀个体在种群中的存活时间，加大了其繁殖几率和优秀基因被子代个体继承的概率。
By this means, saved generations of some better individuals are prolonged in the generation population, and the probability of their propagatation and better-gene genetic increased.
对三个经济性状显著不同的甜菜品系根据个体表现型所划分的集团子代，随机区组试验结果表明：品系间和集团间的根重及含糖差异均显著；
Randomiged blockexperient on the phenotype of individual plant of mass filial generation of 3 sugarbeet lines with significant different in the economic character have been worked.
应用推荐