Figure 1.

The cer9 mutations increase the ABA inhibition of seed germination and postgermination growth. Seeds of cer9-1 (Ler-0 background) and cer9-2 (Col-0 background) along with their wild types were sown onto 1/2 MS agar medium supplemented with 0, 1, or 2 µm ABA. Representative images show the morphology of seedlings 7 d after imbibition. Germination (radicle emergence) percentages were determined 3 d and green cotyledons were scored 7 d after the imbibition. Data are means and sd from four biological replicates each with at least 30 seeds.