The Sucrose Phosphate Synthase (SPS) Activity Assay Kit is primarily used to measure the activity of the enzyme SPS in plant tissues. This enzyme plays a critical role in sucrose biosynthesis, making the kit essential for studying carbohydrate metabolism in plants. It is widely applied in agricultural research to understand and improve crop yield, as sucrose is a key energy source and transport molecule in plants. The kit is also utilized in plant physiology studies to investigate how environmental factors, such as stress conditions, affect sucrose production. Additionally, it aids in genetic research by helping to identify and characterize plant varieties with enhanced SPS activity for better growth and productivity.