Fig. 1.

Differential responses of six foxtail millet varieties to K⁺ deficiency during seedling growth stage. The seedlings were transferred to modified Hoagland nutrient solution with 10 μM K as the K⁺-deficient treatment (LK) supplemented with NH₄Cl as the nitrogen source. The plants grown in normal media (CK) are shown on right and the plants experienced K⁺ deficiency (LK) are shown on left