Castor is a plant that is commercially very important to the world. It is produced in about 30 countries lying in the tropical belt of the world. Due to high production and utilization of such crop, it gets essential to differentiate the varieties for benefit of mankind. Single species with 9 cultivars were subjected to RAPD analysis for differentiation from each other through unique banding pattern and combined profiles of 20 primers in the present study. The present study shows genetic relationship among cultivars of Ricinus communis using RAPD markers. Using the cluster pattern, genetic...