 This research paper examines the use of grafting techniques to produce more tetraploid and triploid watermelon plants for breeding and seed production. The authors found that the use of a one-note branch from a diploid watermelon as a sign produced the best results, resulting in higher survival rates and higher levels of hormones, carbohydrates, and antioxidant activity. Additionally, sugar application resulted in increased carbohydrate accumulation in the grafted combination.