title: Proceedings: Polyploidy and habituation in a long-term callus culture as compared to crown gall tissue in vivo (Helianthus annuus L.).
mesh_terms: D002454:Cell Differentiation; D002478:Cells, Cultured; D003470:Culture Media; D006185:Habituation, Psychophysiologic; D006368:Helianthus / Q000254:growth & development*; D010937:Plant Growth Regulators / Q000494:pharmacology*; D011123:Polyploidy; D013997:Time Factors
chemical_list: D003470:Culture Media; D010937:Plant Growth Regulators