The result shows that the narrow-sense heritability ( h N~ 2) of plant height and spike length is 0.727 4 and 0.809 3. The heritability of single plant spike weight and single spike millet weight which is close to millet yield is not high. 结果表明,株高、穗长的狭义遗传力(hN2)分别为0.7274和0.8093,与谷子产量关系密切的单株穗重、单株穗粒重的遗传力不很高;