Effects of gentamicin on growth of shoot initiation from cultured tobacco callus and salpiglossis leaf discs

Summary Tobacco (Nicotiana tabacum L. ‘Wisconsin 38’) callus growth was inhibited progressively by gentamicin sulfate at all concentrations tested. Gentamicin inhibited shoot initiation from tobacco callus and salpiglossis [Salpiglossis sinuata (Ruiz and Pav.) ‘Bolero’] leaf discs at concentrations above 25 mg/l. At 100 mg/l the antibiotic suppressed completely organogenesis from explants of both tobacco and salpiglossis. Journal paper 8410 of the Purdue University Agriculture Experiment Station. An erratum to this article is available at .