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Seed germination in response to ABA. Percentage of radicle emergence from seeds grown on plain agar supplemented with 0, 2, or 5 µm ABA for 5 and 10 d is presented. Data represent relative means (treated versus untreated) ± se of three independent experiments. For each experiment, n = 100. Student’s t test. *, Statistically significant difference of P < 0.001 from the wild type (Col-0, Col-3, or Ws-4); #, mutants in Ws-4 background; §, mutants in Col-3 background.
