6—BA and IAA affected the callus induction and differentiation in Physalis peruviam L..All kinds of explants tested in this experiment for- med two types of callus on MS medium supplemented with IAA 0.2mg/1 and 6-BA 3.0mg/1.One is swelling and hard,and the other is loose and fragile.The former could differentiated more buds than the latter. The explants of leaf produced callus on medium supplemented with IAA or 6-BA,but the effect of 6-BA was more effective than IAA. Higher concentration of IAA inhibited th...