Used to measure the activity of plant isopentenyltransferases (IPTs), enzymes involved in cytokinin biosynthesis, in research settings focused on plant hormone regulation. This ELISA kit enables precise quantification of enzyme activity in plant tissue extracts, supporting studies on plant growth, development, and stress responses. It is widely applied in agricultural research, plant physiology, and biotechnology to evaluate how genetic modifications or environmental factors affect cytokinin production. The assay is useful for high-throughput screening of plant lines with altered hormone levels, aiding in the development of crops with improved yield, stress tolerance, or delayed senescence.