Salt tolerance shoot index (STI_S) and salt tolerance root index (STI_R) of two wheat genotypes at 2, 3 and 5 days of growth under salt treatments (90, 160 and 230 mM NaCl), combined (P-90 mM NaCl, P-160 mM NaCl and P-230 mM NaCl) treatments, and high voltage electrical discharge (HVED) pretreatment (P). Values are means of three repetitions (100 seeds/repetition) ± S.D. The different capital letters indicate significances among means of different treatments within the same genotype, while lowercase letters indicate significances among means and between genotypes under the same treatment at p < 0.05 using LSD post hoc-test.