Exogenous GABA enhances muskmelon tolerance to salinity-alkalinity stress by regulating redox balance and chlorophyll biosynthesis

Table 1 Effects of exogenous GABA on the growth of muskmelon seedlings exposed to salinity-alkalinity stress at 3 d

Treatment	Total fresh weight (g/plant)	Total dry weight (g/plant)	Area of leaf (cm²/plant)
Control	18.31 ± 1.42ab	1.08 ± 0.55ab	235.09 ± 15.6b
CG	25.08 ± 2.90a	1.39 ± 0.13a	289.16 ± 16.4a
S	9.54 ± 0.64c	0.72 ± 0.06b	158.76 ± 6.5c
SG	14.57 ± 0.76b	1.00 ± 0.06ab	173.95 ± 13.3bc

H₂O foliar prespraying for 8 h under normal nutrient solution cultivation conditions, (Control); 50 mM GABA foliar prespraying for 8 h under nutrient solution cultivation conditions, (CG); Normal nutrient solution containing 50 mM salinity-alkalinity and H₂O foliar prespraying, (S); 50 mM GABA foliar prespraying for 8 h under salinity-alkalinity stress, (SG). Data were analyzed with SPSS 20 software (IBM) using Tukey’s multiple range test at a significance level of P < 0.05, and different letters above the bars indicate a significant difference. Data were expressed as the mean ± standard error of three independent biological replicates

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