Colchicine-induced Polyploidy in Eustoma grandiflorum

Tetraploid forms of lisianthus [Eustoma grandiflorum (Grisebach) Schinners] were produced by applying 0.5% (w/v) aqueous colchicine to seedling apices. The tetraploids had stronger stems and reduced plant stature, which provided better support to flowers than diploids