The perfect efficiency of genetic transformation of Dioscorea panthaica stem from pre-cultivation 1 d and co-cultivation 3 d, was got by the combination of strain A4 and Agrobacterium rhizogenes.

• 以发根农杆菌菌株A4转染已预培养1d的黄山药茎段后,共感染3d,其转化效果最佳;