Fig. 6

Expression profiling of six HvHAK genes in response to abiotic stresses at seedling stage. a Expression of HvHAKs in response to salt stress (200 mM NaCl). b Expression of HvHAKs in response to osmotic stress (20% PEG8000). c Expression of HvHAKs in response to potassium deficiency (0.01 mM K⁺). Dotted lines indicated the expression levels of HvHAKs in control seedlings. Lowercase letters indicated the significant difference at p < 0.05