Previous View
APSnet Home
Phytopathology Home


Meristem Culture Frees Strawberries of Mild Yellow Edge, Pallidosis, and Mottle Diseases. R. H. Mullin, Research Associate, Department of Plant Pathology, University of California, Berkeley; S. H. Smith(2), N. W. Frazier(3), D. E. Schlegel(4), and S. R. McCall(5). (2)Associate Professor of Plant Pathology, The Pennsylvania State University, University Park 16802; (3)Entomologist, Department of Entomological Sciences, University of California, Berkeley 94720; (4)(5)Professor, and Research Associate, respectively, Department of Plant Pathology, University of California, Berkeley 94720. Phytopathology 64:1425-1429. Accepted for publication 4 June 1974. DOI: 10.1094/Phyto-64-1425.

Apical meristem culture freed strawberry plants of strawberry pallidosis, strawberry mottle, and strawberry mild yellow edge (SMYE) viruses. However, heat therapy in combination with apical meristem culture produced 33-75% more SMYE-free plants. Meristems cut from heat-treated SMYE-infected Fresno strawberries developed into plants faster than meristems from infected control plants held under ambient conditions. Progeny of the meristem-cultured cultivars has remained free of detectable graft transmissible diseases in a greenhouse and in a screenhouse for 7 yr.