Sensitivity of the three types of maize roots to the salt treatment.

<p>(A) and (B) The relative elongation rate of the three types of maize roots after 24 h and 72 h exposure in 100 mM NaCl. Different letters represent significant difference at <i>p</i>< 0.05 (Duncan’s multiple range test; data are represented as mean ± SEs; three biological repeats). (C) The root morphology of PR, SR, CR with lengths of approximately 6 to 10 cm treated with 0 and 100 mM NaCl for72 h. Experiments were repeated three times with similar results. Bar = 2.0 cm.