The browning was more seriously in the albino stem segments than the leave. The supplying of Vc 100 mg/L or AgNO_3 1 mg/L could limited the browning, and increased the efficiency of adventitious bud regeneration.

• 白化茎段的褐化现象比叶片严重,在再生培养基中添加100mg/L Vc可以抑制褐化现象的发生,1mg/L的AgNO_3提高苹果不定芽的再生效率;