Effects Of Arbuscular Mycorrhizal Fungi On Photosynthesis And Resistance Of Protected Strawberry

In this experiment,the"Suizhu"strawberry was chosen as the test material,and two treatments were set up,including the non-inoculated group（CK）and the arbuscular mycorrhizal fungi（AMF）group.The effects of arbuscular mycorrhizal fungi on photosynthetic characteristics and resistance of greenhouse strawberries were analyzed in terms of the relative content of chlorophyll,photosynthetic gas exchange parameters,fluorescence parameters and chlorophyll fluorescence induction kinetic curves.The results lied the foundation for the AMF application in sustainable development,green and organic production of strawberry.The results also provided a theoretical basis for AMF to promote crop growth as a biological fertilizer.The results were as follows:1.Strawberry inoculation with arbuscular mycorrhizal fungi could improve photosynthetic characteristics,increase net photosynthetic rate,stomatal conductance,and intercellular CO₂ concentration to increase the accumulation of organic matter and promote plant growth.2.Strawberry inoculation with arbuscular mycorrhizal fungi could enhance the maximum fluorescence value of strawberry leaves,speed up the electron transfer rate,and increase the activity of photoreaction centers.The light energy conversion efficiency of the inoculated strawberry plant was improved,the potential photosynthetic capacity of the plant was enhanced,and the photosynthetic rate of strawberry was increased.3.Arbuscular mycorrhizal fungi could improve strawberry resistance,reduce the incidence and disease index of strawberry powdery mildew,gray mold and red spider,and promote strawberry growth.