Fig. 2. Relationship between the embryogenic potential and transformation potential of 15 soybean cultivars in the presence of Agrobacterium and selective agents. The embryogenic potential of each cultivar was expressed as the estimated number of hygromycin-resistant SEs per 100 explants (% responding explant x no. of SEs per responding explant). The transformation potential of each of cultivar was expressed as the estimated number of GUS-positive SEs (no. of hygromycin-resistant SEs x % transformation frequency). Values for percent responding explant and % transformation frequency are shown in Table 1.