Cucurbit Genetics Cooperative Report 9:74-77 (article 23) 1986 Roig¹, L. Zubeldia², M.C. Orts¹, M.V. Roche¹, and V. Moreno² Departments of Microbiology¹ and Genetics², E.T.S. Ingenieros Agronomos, Universidad Politecnica de Valencia, 46022 Valencia, Spain. In a previous work (1) we described suitable methods for obtaining callus from mesophyll protoplasts of axenic plants of three melon cultivars. […]