H. S. Purba, Hot Setiado, and L. A. M. Siregar, “In vitro The Role of Paclobutrazol in Potato Seed Production (Solanum tuberosum L) cultivar Granola Kembang Early Generation (G0) In Vitro: Potato”, Petrop, vol. 8, no. 1, pp. 73-81, May 2021.