对普通小麦4个组合7个籽粒产量性状进行研究表明:小麦的籽粒产量性状都属数量性状,F_2代分离表现为连续变异,除穗粒重和株穗数外,凡双亲差异大的,F_2代一般都是中间类型的植株数占多数,反之则少,而超大、小亲个体百分比高.在本年试验条件下,一般广义遗传力都较低,其大小依次为粒重、株高、穗粒数、穗长、穗粒重、小穗数、株穗数。粒重、穗粒重、穗粒数遗传变异系数高,与产量有选择潜力,其它性状遗传变异系数小,选择潜力较小 The results showed that the grain yield traits of wheat were of quantitative traits. The segregation of F_2 generation showed continuous variation. Except for the grain weight per plant and panicle number per plant, Generation are generally the middle type of plants accounted for the majority, otherwise less, and large, small pro percentage of individuals in this year’s test conditions, the general general heritability are low, followed by the size of grain weight, plant height, Spike grain number, spike length, grain weight per spike, spike number per panicle. Grain weight, grain weight per spike, grain number per spike, high genetic variation coefficient, and selective yield potential. The genetic variation coefficient of other traits is small, and the selection potential is small