K+deficiency inhibits rice growth and affects seedling K+content. (A) Phenotypes of rice seedlings under normal and K+-deficient conditions (CK and LK) at indicated times. (B, C) Dry weight of shoots (B) and roots (C) under CK and LK conditions at indicated times. (D, E) K+ content of shoots (D) and roots (E) at indicated times. Data are means ± SEM (n = 3). Differences between mean values of treatments and controls were compared using t - tests (* P < 0.05, ** P < 0.01).