In this study, the induction of floral organ pistil and palea/lemma from the callus was described in Oryza sativa.. For induction of floral organs, different explants—including young embryo, lemma, palea and pistil—were used for callus induction with different combinations of N~6-benzyladenine (6-BA) and 2,4-dichlorophenoxyacetic acid (2,4-D). High frequencies of callus formation from pistil and young embryo explants were achieved. Floral organs were induced after calli from pistils were transferred to medi...