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Transmission of Xanthomonas manihotis in Seed of Cassava (Manihot esculenta). Fritz Elango, Graduate Student, McGill University, Montreal, Canada, and Visiting Research Associate, Centro Internacional de Agricultura Tropical (CIAT). J. C. Lozano, Plant Pathologist and Bacteriologist, Cassava Program, CIAT, Cali, Colombia. Plant Dis. 64:784-786. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-784.

Transmission of Xanthomonas manihotis in botanical seeds of cassava was studied by direct immunofluorescence and enzyme-linked immunosorbent assays. The pathogen was detected in seed embryos and in pollen but not in other tissues of cassava seeds. Healthy and infected seeds showed no signs of damage due to X. manihotis, but approximately 104 cells/ml were detected in infected embryos. Seed transmission varied from 0 to 40%.