BioMed Research International / 2009 / Article / Tab 3

Research Article

Induction of Tetraploids from Petiole Explants through Colchicine Treatments in Echinacea purpurea L.

Table 3

Comparison of the effect of duration of 120 mg/L colchicine treatment on shoot regeneration from petiole explants. Data were collected 40 days after transfer of the colchicine treated explants to colchicine-free regeneration medium.

Treatment duration (days)% shoot regeneration No. shoots per bottle

7 72.5 a*7.0 a
1460.0 b5.2 b
2147.0 c3.8 c
2817.5 d2.2 d

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

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