Table 5.

Isomers of superoxide dismutase enzymes (+/−) and their Retention factor (Rf) in response to salinity stress, foliar application of chitosan dissolved in different organic acids (Ch ACE, Ch ASC, Ch CIT and Ch MAL) and their interactions on tomato plants. L1 = Control, L2 = Ch ACE, L3 = Ch ASC, L4 = Ch CIT, L5 = Ch MAL, L6 = S, L7 = S + Ch ACE, L8 = S + Ch ASC, L9 = S + Ch CIT and L10 = S + Ch MAL.

Treatments
Rf	L1	L2	L3	L4	L5	L6	L7	L8	L9	L10
0.362	+	+	+	+	+	+	−	++	++	−
0.641	+	+	+	+	+	+	+	+	+	+
0.727	−	+	+	+	+	++	++	++	++	−
0.865	+	+	+	+	+	+	+	+	−	+