以1年生盆栽‘寒富’苹果及其亲本系品种(‘东光’和‘富士’)为试材,通过气体交换等方法对‘寒富’及其亲本系品种光合特性进行了研究,分析了光合速率变化规律及叶绿素含量、比叶重和叶面积对光合速率的影响。结果表明:‘寒富’与亲本系品种的光合能力、羧化效率(CE)、表观量子效率(AQY)、CO2补偿点,CO2饱和点、饱和光强、补偿光强等光合参数有差异;‘东光’对低浓度的CO2、强光和弱光的利用率较高,‘富士’对高浓度的CO2利用率较高,‘寒富’处于二者之间;成熟叶片的叶面积,比叶重和叶绿素含量与Pn之间存在相关性;亲本系品种有较高的Fv/Fm,而‘寒富’苹果具有较高的光合性能指数。 The photosynthetic characteristics of ’Hanfu’ and its parental lines were studied by means of gas exchange and other methods using the one-year-old ’Hanfu’ apple and its parental lines (’Dongguang’ and ’Fuji’ The changes of photosynthetic rate and the effects of chlorophyll content, specific leaf weight and leaf area on photosynthetic rate were studied. The results showed that the photosynthetic capacity, carboxylation efficiency (CE), apparent quantum yield (AQY), CO2 compensation point, CO2 saturation point, saturation light intensity and compensation light intensity of ’Hanfu’ ; ’Dongguang’ had higher utilization rate of low concentration of CO2, strong light and poor light, ’Fuji’ had higher utilization of high concentration of CO2 and ’Hanfu’ between them; leaf area of ​​mature leaves , Leaf specific weight and chlorophyll content and Pn were correlated with each other. Fv / Fm was higher in parental lines, while ’Hanfu’ apple had higher photosynthetic performance index.