非灭菌土壤中AM真菌对番茄植株生长和果实品质的影响OA

Taking tomato(Solanum lycopersicum)as test material,pot experiments with non-sterilized and sterilized soils was adopt,with or without inoculation of AM fungus(Rhizophagus irregularis),to investigate the effects of AM fungi on vegetative growth and fruit quality throughout the entire growth period,in order to provide reference for the practical application of AM fungi in non-sterilized soils.The results showed that AM inoculation effectively promoted tomato plant growth,mainly increasing plant height under sterilized conditions and stem diameter under non-sterilized conditions.Meanwhile,AM inoculation significantly enhanced root activity and leaf SPAD value,increased stomatal conductance and decreased intercellular CO2 concentration,thereby improving photosynthesis.In addition,AM inoculation increased fruit number and single fruit weight,with more pronounced promotion effects under sterilized conditions.It was worth noting that AM inoculation significantly increased soluble solid and soluble sugar contents in fruits under sterilized conditions,while significantly reducing titratable acid content under non-sterilized conditions,both leading to a significant increase in sugar acid ratio.In conclusion,AM inoculation in non-sterilized soils could still promote tomato growth and improve fruit quality,although the effects were slightly weaker than under sterilized conditions.In practical production,a combined inoculation strategy of AM fungi and beneficial bacteria was recommended to further enhance fruit quality.