Figure 7. ATPase activity (µmol Pi mg⁻¹ protein h⁻¹) in flag leaves of three barley genotypes.

Tibetan wild and cultivated barley plants were exposed to drought, salinity alone and combined stresses during anthesis stage at 4% soil moisture level. Error bars represent SD values (n=4). Different letters indicate significant differences (P<0.05) among the treatments within each genotype.