【摘要】 研究了 4种砧木、5种中间砧红富士苹果叶片内POD、IOD酶活性的季节变化规律、不同中间砧对红富士苹果树体生长的影响以及中间砧红富士苹果不同部位的酶活性变化。结果表明 ,各砧木与中间砧红富士苹果叶片内POD、IOD酶活性的季节变化规律相似 ;砧木与其对应的中间砧红富士苹果叶片内的酶活性之间呈极显著的正相关 ;不同矮化程度砧木之间及不同中间砧红富士苹果之间的POD、IOD酶活性差异较大 ,并且酶活性大小与砧木的矮化程度密切相关 ,即半矮化砧木的酶活性低于矮化、极矮化砧木的酶活性 ;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 ;在 5月下旬和 9月下旬 ,中间砧红富士苹果叶片内的POD、IOD酶活性与树体的生长势达显著负相关 ,因此利用POD、IOD酶活性预测嫁接树生长势的最佳时期应分别为 5月下旬和 9月下旬更多还原

【Abstract】 The seasonal changes of POD,IOD enzyme activities in the leaves of 4 dwarfing stocks and Red Fuji apple grafted on 5 interstocks and the POD and IOD activities at different positions of Red Fuji apple were studied. The results showed that the seasonal changes of POD and IOD activities in the leaves of 4 dwarfing stocks were similar to that of Red Fuji apple. The enzyme activities of stocks were closely correlated with those of Red Fuji apple grafted on corresponding interstocks and POD and IOD activities of semi dwarfing stocks were lower than those of dwarfing and very dwarfing stocks. There were much more differences of POD activities in phloem and IOD activities in leaves among different interstocks. 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. The best time using POD and IOD activities to forecast the dwarfing ability of stocks was in the last ten days of May and September.更多还原