光照强度对园艺植物光合作用影响的研究进展

综述了光照强度对园艺植物光合作用影响的研究进展.园艺植物的光强-光合曲线总体趋势相似,但不同植物存在一定差别,且光补偿点和光饱和点也有很大的差异;随光照强度变化,园艺植物的部分生理特性也会发生相应的变化,进而使得长期处于逆境光照强度下的植物对弱光和强光有一定的适应性;光照强度还会与CO2浓度、水分状况、温度、矿物质营养状况等生态因子协同对园艺植物的光合作用产生影响;园艺植物群体光合作用与其单叶的光合作用有相似的变化趋势;光照强度对园艺植物光合作用日变化的影响因种类、品种、生育期或生态因子的不同而各异;光照强度对园艺植物同化物的运输和分配也会产生影响.

Research progress of the influence of light intensity on photosynthesis of horticultural plants

Light intensity has significant effects on photosynthesis of horticultural plants in many aspects.The research progress of the influences of light intensity on photosynthesis of horticultural plants are briefly reviewed in this paper.The change curves of light intensity-photosynthesis of horticultural plants are similar,but there are some differences between one plant species and the others,and different plants differ greatly from each other in the light-saturation points and light-compensation points.Some physiological characteristics of horticultural plants change with light intensity,furthermore making these plants under adversity stress of light intensity for a long time adapt to both low light and high light conditions.Moreover,light intensity has synergistic effect on the photosynthesis of horticultural plants with other factors,such as concentration of CO2,moisture condition,temperature,mineral nutrition et al.The change trend of colony photosynthesis(CPn) of a horticultural plant is similar to that of its single leaf photosynthesis(Pn).The effects of light intensity on photosynthesis diurnal variation of horticultural plants diver with some differentiations in species,cultivars,bearing times and ecological factors.In addition,light intensity also influence on the process of both transportation and distribution of photosynthates in horticultural plants.