There was a significant negative correlation between POD and IOD activities and the growth potential of Red Fuji apple grafted on interstocks in the last ten days of May and September.

• 比较不同中间砧红富士苹果各部位的酶活性表明，不同中间砧POD的酶活性在枝条韧皮部中的差异较大，而IOD在叶片中的差异较大；