2,4-D (mg∙l−1)

Callus induction (%) (Mean ± SE)

Color

Texture

0.0

0 ± 0

-

-

0.5

100 ± 0

Grey-white

Soft

1.0

90 ± 10

Grey-white

Compact

1.5

36 ± 31.7

Grey-white

Soft

2.0

100 ± 0

Grey-white

Soft

2.5

96.6 ± 3.3

White

Soft

3.0

86.6 ± 13.3

White

Soft

3.5

100 ± 0

Dark-grey

Soft

4.0

86.6 ± 13.3

White

Compact