比较山梨醇和蔗糖两种碳源在苹果微体繁殖中的作用表明，二者对增殖和生长的最适浓度均为３０ｇ／Ｌ．山梨醇代替蔗糖作碳源时芽的增殖倍数高，而新梢生长差，叶／茎值小。总碳源为３０ｇ／Ｌ时，采用不同比例的山梨醇和蔗糖配合有利于芽的增殖和生长。山梨醇对生根的作用显著低于蔗糖，而在山梨醇培养基上继代４次后，生根得到明显改善 Comparing the roles of sorbitol and sucrose in the apple reproduction showed that the optimal concentration of both sorbitol and sucrose was 30 g / L for both proliferation and growth. Sorbitol instead of sucrose as a carbon source when the multiplication factor of shoot high, and poor shoot growth, leaf / stem value is small. The total carbon source of 30g / L, the use of different proportions of sorbitol and sucrose is conducive to bud proliferation and growth. The effect of sorbitol on rooting was significantly lower than that of sucrose, but after 4 generations on sorbitol medium, rooting was significantly improved