The study looked at how the amount of sunlight, stomatal conductance, and CO2 concentration affect the photosynthesis of Osmanthus fragrans plants. They found that sunlight was the most important factor influencing photosynthesis, with lower light levels leading to lower photosynthesis rates. Stomatal conductance and CO2 concentration also directly impacted photosynthesis in these plants. Overall, the research showed that environmental factors like sunlight play a big role in how well Osmanthus fragrans plants can photosynthesize.