2.2 Salt stress (NaCl) treatment
Salt (NaCl) treatment was applied to hydroponic solution. During the
plants transfer, roots were washed adequately with tap water then rinsed
with deionized water. Four-week-old SV and 10-week-old SAplants were treated with 0, 50, 100, 250, 400, and 550 mM NaCl for up to
15 days. The composition of the hydroponic medium was as described by
Hoagland and Arnon (1950).