In vitro root induction in hypocotyl and plumule explants of Helianthus annuus

aia cultivo de tejidos cultivo in vitro culture de tissu culture in vitro culture media explant explantes explants helianthus annuus hipocotilos hypocotyle hypocotyls iaa in vitro culture in vitro experimentation medio de cultivo milieu de culture organogenese organogenesis plant growth substances plumula plumule racine roots sustancias de crecimiento vegetal tissue culture