TDZ concentration (mg∙L−1)

NAA concentration (mg∙L−1)

Induction rate of callus (%) ± SD

Character of callus

0.3

0.2

86.3 ± 3.40ab

Compact, green, with slight brownness

0.5

0.2

93.3 ± 3.35a

Compact, green, with slight brownness

1.0

0.2

81.1 ± 6.96bc

Loose, green

0.3

0.5

80 ± 3.30bc

Compact, light green

0.5

0.5

76.7 ± 6.65c

Compact, light green

1.0

0.5

74.1 ± 4.50c

Loose, light green