Table 3.

Effect of different exposure time of 100 mg/L colchicine treatment on polyploid induction in drumstick tree

Exposure time (days)	No. of plants examined	% individuals by ploidy level
		Diploid	Chimeras	Tetraploid
0	10	100a	0c	0c
3	27	81.48 ± 7.62b	14.81 ± 6.97ab	3.70 ± 3.70b
6	16	68.75 ± 11.97c	25.0 ± 11.18ab	6.25 ± 3.39b
9	6	50.0 ± 22.36c	33.33 ± 21.08a	16.67 ± 5.94a
12	2	100a	0c	0c

Mean values followed by the same letter in the same column are not significantly different from each other at the P ≤ 0.05 level, according to Duncan’s multiple range test.