Fig. 1.

Relative growth rate and tissue K⁺ for hydroponically grown rice. (a) Relative growth rate (RGR, % day⁻¹) of 5-week-old rice plants exposed to standard medium (SM), and media containing 0mM K⁺, 100 µM K⁺, and 60mM K⁺. (b) Root K⁺ content of plants grown in SM, 0mM K⁺ and 100 µM K⁺ conditions. (c) Shoot K⁺ content of plants grown in the conditions mentioned under (b). *Significant difference by t-test at a probability level of P<0.05 between each genotype and its respective wild type.