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本试验，对７个杂交组合的后代表观收获指数与亲本的关系进行了研究。结果表明，Ｆ２群体表观收获指数平均值与双亲平均值呈极显著正相关（ｒ＝０．８３０３），与双亲差值显著负相关（ｒ＝－０．６９７８）；Ｆ２分离出高表观收获指数的个体的比率与双亲平均值相关显著（ｒ＝０．７６３８）；Ｆ２群体分布受亲本的组配方式影响较大。因此，在提高大豆表观收获指数育种中，选择双亲绝对值均高且差值较小的材料为亲本有利于提高育种选择效率。
In this experiment, the relationship between the harvest index and parents of the seven crosses was studied. The results showed that the average apparent harvest index of F2 population was significantly and positively correlated with the average of parents (r = 0.8303), negatively correlated with the difference of parents (r = -0.6978), high apparent The ratio of individuals with the index of harvest was significantly correlated with the average of parents (r = 0.7638). The distribution of F2 population was greatly influenced by the parental grouping. Therefore, in improving the apparent harvest index of soybean breeding, choosing the parents with the highest absolute value and the smaller difference as parents will be beneficial to improve the breeding selection efficiency.