以3个野生大豆与栽培大豆杂交后代品系0004、0005和9002为研究对象,并以父本野生大豆为对照,选用4种常用的光响应模型(直角双曲线模型、非直角双曲线模型、修正的直角双曲线模型和指数函数模型)对其进行光响应曲线的拟合,判断这些模型的适宜性,并比较3个杂交后代品系及其父本光合特性的差异。结果表明:这4种模型均可对试验材料进行拟合,决定系数R2>0.98。但由于直角双曲线模型、非直角双曲线模型和指数函数模型无法求取试验材料最大净光合速率及光饱和点,求得的拟合值不仅与实测值相差较大,也反映不出光抑制现象。而修正的直角双曲线模型则可以克服以上问题,更适用于本试验材料的研究。通过对4个供试材料光合参数的综合比较,认为品系9002具有较好的光合特性,对光的适应能力最强。 Taking the hybrids of three wild soybean cultivars and soybean cultivars 0004, 0005 and 9002 as the research objects, and using the wild soybean as the control, four commonly used photoresponse models (rectangular hyperbolic model, non-rectangular hyperbolic model, The right-angle hyperbola model and the exponential function model) were used to fit the light response curves and the suitability of these models was judged. The differences in photosynthetic characteristics between the three hybrids and their parents were also compared. The results show that all the four models can fit the test materials with the coefficient of R2> 0.98. However, the maximum net photosynthetic rate and light saturation point can not be obtained by rectangular hyperbolic model, non-rectangular hyperbolic model and exponential function model, and the fitted values ​​are not only different from the measured values, but also do not reflect the photoinhibition phenomenon . The modified rectangular hyperbolic model can overcome the above problems and is more suitable for the study of the material. Through the comprehensive comparison of the photosynthetic parameters of the four tested materials, it is considered that the strain 9002 has better photosynthetic characteristics and strongest adaptability to light.