In vitro propagation of Stevia rebaudiana Bertoni. Results with different genotypes

adaptación adaptation adattamento aib brotes citochinine citoquininas cultivo in vitro culture in vitro culture media cytokinine cytokinins enracinement enraizamiento genotipi genotipos genotypes germogli génotype iba in vitro culture medio de cultivo micropropagación micropropagation micropropagazione milieu de culture plantule pousse racine radicazione radici raíces rooting roots seedlings shoots stevia rebaudiana substrati di coltura