Used for quantifying Ferredoxin-NADP+ reductase (FNR) enzyme activity in plant samples, this ELISA kit enables researchers to assess photosynthetic efficiency and chloroplast function. It is widely applied in plant physiology studies, especially in evaluating plant stress responses such as drought, heat, or light intensity effects on photosynthesis. The kit supports high-throughput analysis in agricultural research and breeding programs aiming to improve crop resilience and productivity. It is also useful in academic research focused on understanding electron transport chain dynamics in plant leaves.