فهرست نشریات علمی دسترسی آزاد ایران

The study of Carbon Quantum products is very important. In this study, experiment was conducted under controlled greenhouse conditions using four treatment groups: 0, 25, 50, and 100 mg/LCQDs. The CQDs were administered through foliar spraying over 21 days, and physiological measurements were taken using chlorophyll fluorometry, spectrophotometry, and soil CHNS analysis. The 50 mg/L treatment yielded optimal results: Photosystem II quantum yield (Fv/Fm) increased by 14%, electron transport rate by 40%, and oxygen evolution by 42%. Rubisco activity rose by 130%, with RuBP and PGA levels increasing by 34% and 32%, respectively. Leaf carbon content improved by 50%, root biomass by 45%, and soil organic carbon by 40%. Microbial colony-forming units (CFU) increased by 25%, soil respiration by 33%, and the C/N ratio shifted from 12.5 to 13.8. These enhancements are attributed to CQDs facilitating electron transfer in Photosystem II and stabilizing Rubisco via electrostatic interactions, while forming highly stable CQD-humic complexes that improve soil carbon retention. Compared to previous studies using synthetic CQDs on model crops, this research demonstrates superior efficacy at lower concentrations, with no observed toxicity. The findings highlight the potential of bio-derived CQDs as eco-friendly agents for boosting carbon capture and promoting sustainable agroforestry.