Table 6 Antioxidant enzyme (μg/g fw) of quinoa plants treated with proline or trehalose with (+) and without (−) compost amendment under salinity stress (average of two seasons)
Salinity (mg/L) | Treatment, mM | SOD | CAT | POX | APX | |||||
|---|---|---|---|---|---|---|---|---|---|---|
− | + | − | + | − | + | − | + | |||
0 | Control | 18.26 | 20.11 | 55.32 | 60.33 | 31.21 | 36.27 | 7.82 | 9.06 | |
Proline | 0.5 | 19.69 | 21.43 | 57.93 | 60.84 | 32.56 | 37.08 | 8.91 | 9.88 | |
1.0 | 21.19 | 22.46 | 61.04 | 61.86 | 34.18 | 38.44 | 10.36 | 10.36 | ||
Trehalose | 2.5 | 20.03 | 21.45 | 60.45 | 61.56 | 38.69 | 40.61 | 12.87 | 12.87 | |
5.0 | 22.12 | 23.89 | 61.78 | 63.12 | 40.88 | 44.05 | 13.60 | 13.60 | ||
3000 | Control | 25.77 | 26.63 | 60.93 | 60.35 | 23.04 | 31.21 | 12.22 | 13.22 | |
Proline | 0.5 | 27.31 | 28.45 | 61.81 | 63.70 | 25.91 | 32.29 | 13.09 | 13.73 | |
1.0 | 28.30 | 31.04 | 62.03 | 65.40 | 27.32 | 34.47 | 13.98 | 13.98 | ||
Trehalose | 2.5 | 28.75 | 30.21 | 61.96 | 63.28 | 28.67 | 36.35 | 14.00 | 14.00 | |
5.0 | 30.87 | 32.54 | 63.00 | 72.31 | 32.54 | 37.45 | 14.86 | 14.86 | ||
6000 | Control | 33.13 | 36.05 | 62.71 | 62.21 | 15.56 | 23.28 | 14.01 | 14.62 | |
Proline | 0.5 | 35.44 | 38.86 | 65.87 | 66.67 | 17.25 | 25.09 | 15.47 | 15.82 | |
1.0 | 38.65 | 41.12 | 68.31 | 68.45 | 19.23 | 26.36 | 16.01 | 16.01 | ||
Trehalose | 2.5 | 38.74 | 40.32 | 68.24 | 74.47 | 20.48 | 28.32 | 17.30 | 17.30 | |
5.0 | 40.01 | 44.14 | 71.30 | 80.46 | 23.58 | 29.14 | 19.33 | 19.33 | ||
LSD at 5% | 0.65 | 2.42 | 1.34 | 0.79 | ||||||