BioMed Research International / 2009 / Article / Tab 4

Research Article

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

Table 4

Comparison of the effect of colchicine treatment duration on chromosome doubling of regenerated plants.

Treatment duration (days)No. plants sampledNo. root tip sampledNo. cells observedNo. cells with 2x chromosomesNo. cells with 4x chromosomesNo. each kind of plants on the base of chromosome counting*
2x plants 4x plantsChimera

7518839153903124506 (12/902/14)
14518937463463283376 (248/248/10)8 (35/762/13)
215188323728234143510 (391/391/15)6 (23/371/10)
285187335027815693512 (546/546/20) 4 (23/311/8)

*Data in the parenthesis are no. of 4 cells/ no. of cells observed/No. of root tips sampled.

Article of the Year Award: Outstanding research contributions of 2020, as selected by our Chief Editors. Read the winning articles.