Figure 1.
Tolerance among three rice cultivars, “Nipponbare” (N), “Koshihikari” (K), and “Gohyakumangoku” (G) to iodine excess. (A) Rice plants treated with IO−3. Rice plants were cultured in pots filled with perlite and Kasugai's nutrient solution (pH 5.5) containing IO−3. (B) Shoot length of rice plants treated with or without IO−3. Cont.: rice plants treated without IO−3, IO−3 treat.: rice plants treated with IO−3. Data are mean ± standard error (n = 6). (C) Shoots of soil-cultured rice cultivars after the iodine treatment. Rice seedlings were grown in 1/5000a Wagner pots with soil mixed with IO−3. (D) Concentration of iodine in the shoots of soil-cultured rice (C) after the IO−3 treatment. Data are mean ± standard error (n = 4).