To discuss the production technique of secondary metabolites by culture in vitro for Crocus Sativus L,the effects of hormone conditions on the inducement and growth of the style callus were investigated at different density of NAA,2,4-D,IBA and 6-BA.The results indicated that,during the primary culture of Crocus Sativus L,auxin was one of the main factors which affect the callus induction and the shape character. In addition,within certain range of density(from 2.0 to 8.0 mg/L),the induction effect of NAA w...