IV.6-BA has vital effect on callus differentiation. 0 mg/L is propitious to the differentiation of callus from mature embryo, and the highest differentiation frequency is 90.9% for Delaware and 69.2% for Juventus.

• 6-BAP对愈伤组织的分化有显著影响，0mg/L利于成熟胚诱导的愈伤组织分化，最高分化率分别为D(90.；9%25)，J(69