Table 2 Effect of the mutant strain YSD YN2 on plant biomass and antioxidant activities

 Root length (cm)

5.97 ± 1.66^a

7.77 ± 0.67^a

 Plant height (cm)

25.17 ± 1.61^a

30.13 ± 3.18^a

 Leaf number

8.00 ± 1.00^b

11.00 ± 0.00^a

 Root diameter (mm)

3.43 ± 0.40^b

6.37 ± 0.67^a

  Shoot (g/plant)

28.17 ± 7.09^b

51.97 ± 2.79^a

  Root (mg)

249.40 ± 63.40^b

614.57 ± 51.54^a

  Shoot (g/plant)

4.39 ± 1.11^b

9.12 ± 0.49^a

  Root (mg)

35.17 ± 10.42^b

84.00 ± 11.20^a

  Vitamin B1(mg/g)

16.47 ± 0.01^a

16.97 ± 0.01^a

  Vitamin C(mg/g)

85.94 ± 0.73^b

114.98 ± 0.57^a

 Chlorophyll content (μg/g)

69.80 ± 7.27^b

89.67 ± 12.87^a

 SOD activities (U·g^-1 FW·h^-1)

708.99 ± 11.11^b

761.44 ± 13.82^a

 MDA content (μmol/g)

1.57 ± 0.48^a

1.29 ± 0.25^b

 POD activities (U·g^-1 min)

520.00 ± 72.11^a

566.67 ± 11.55^a