We are interested in the possibility of using Glycine soja as a source of genes for improving cultivars of Glycine max. However, some characteristics in G. soja , such as low yield, vining, l odging, shattering, non-defoliation at maturity, poor seed quality, and non-yellow seed coat color are not acceptable in a cultivar. The purpose of our study is to explore the performance of these characters in lines derived from a backcrossing program in which G. soja is the donor parent .