采用CO2和He Ne两种激光的三种剂量,分别辐照两个洋葱品种的湿种子,试验采用随机区组设计,重复三次,利用生物统计学的方法,从个体水平上考查激光诱变洋葱L2代的鳞茎鲜重,横茎等主要性状的回归分析和遗传变异。结果表明:洋葱鳞茎的横茎、纵茎、单株生物产量与鳞茎鲜重间的回归关系显著,横茎的作用大于纵茎,育种中应重视鳞茎、横茎的选择。 Two doses of CO2 and He Ne were used to irradiate the wet seeds of two onion varieties respectively. The experiment was conducted in a randomized block design, repeated three times. The bio-statistical method was used to examine the effects of laser-induced onion L2 generation of fresh weight of bulbs, and other main characters of the horizontal regression analysis and genetic variation. The results showed that there was a significant correlation between the biomass yield and the fresh weight of bulbs, the effect of the horizontal stems was greater than that of the vertical stems, and the selection of bulbs and horizontal stems should be emphasized in breeding.