BioMed Research International / 2009 / Article / Tab 2

Research Article

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

Table 2

Comparison of the effect of colchicine concentration on chromosome doubling of regenerated plants.

Colchicine concentration (mg/L)No. plants sampledNo. root tips sampledNo. cells observedNo. cells with 2x chromosomeNo. cells with 4x chromosomeNo. each kind of plants on the base of chromosome counting*
2x plants 4x plantsChimeras

30518936533642114506 (11/429/9)
60518636903515175423 (154/154/6)6 (21/653/11)
1205183354231324103711 (389/389/19)4 (21/360/7)
240519034183251167454 (154/154/7)2 (13/114/4)

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

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