Table 1.

Comparison of the effect of colchicine concentration on shoot regeneration from petiole explants. Data were collected after 30 days on regeneration medium containing colchicine and 40 days on colchicine-free regeneration medium except for the control, data for which were collected after 40 days of culture without transfer to new medium.

Colchicine concentration (mg/L)	% Shoot regeneration	No. shoots per bottle
0 (control)	97.5 a*	16.2 a
30	67.5 b	6.2 b
60	50.0 c	5.0 c
120	20.0 d	2.0 c
240	7.5 e	0.8 d

*Data in the same column followed by different letters are significantly different by Duncan’t test at ≤5% level.