Photosynthetic characteristics and protective enzyme activities of different low k-tolerance soybean varieties under low potassium stress Photosynthetic Characteristics of Spike and Distribution of 14C-Assimilates Accumulated Before Anthesis in Wheat under Water Deficit Condition Changes of Photosynthetic Characteristics and Response to Rising CO2Concentration in Strawberry in Solar Greenhouse Changes of Photosynthetic Characteristics and Response to Rising CO2Concentration in Strawberry in Solar Greenhouse Effects of Space Electro Static Field and CO2 on Photosynthetic Characteristics in Cucumber Seedings Effects of elevated rhizosphere CO2 concentration on the photosynthetic characteristics, yield, and quality of muskmelon. Photosynthetic characteristics of Bothriochloa ischaemum under drought stress and elevated CO2 concentration. Effects of Space Electro Static Field and CO2 on Photosynthetic Characteristics in Cucumber Seedings Effects of CO2 concentration on photosynthetic characteristics and physiological and biochemical indices of cowpea Effects of exogenous spermine on activities of antioxidant enzymes and photosynthesis in cucumber seedlings under NO-3 stress Effects of Low CO2 on Photosynthetic Characteristics of Ottelia alismoides and Hydrilla verticillata Anatomical Structure and C4 Photosynthetic Characteristics of Seven Atriplex Species Effects of Shading on Leaf Shape and Photosynthetic Characteristics of the Transgenic Lespedeza formosa with Expressing BADH Gene Effects of Salt Stress on Photosynthetic Characteristics of Mulberry Seedlings Effects of Exogenous GA3 Treatment on Photosynthetic Characteristics of Soybean Dwarf Mutant Effects of Elevated CO2 Levels on the Photosynthetic Characteristics of Rice in Soil Contaminated with Heavy Metals Effect of elevated atmospheric CO2 concentrations on photosynthesis light response characteristics of three coniferous tree species seedlings