With the young leaves of apple cv.White Winter Pearmain as materials,the effects of kanamycin,cefotaxime and carbenicillin on the regeneration of adventitious buds were studied.The leaves on the top of shoots after 10-day subculture were cultured on the MS medium containing 2.0 mg/L BA,0.3 mg/L TDZ,0.8 mg/L IAA,30.0 g/L sucrose and 6.0 g/L agar added several kinds of antibiotics.The results showed that 5 mg/L kanamycin could very significantly inhibit the regeneration of adventitious shoots,while 600 mg/L c...