Identidade do virus de vira-cabeça e sua inclusão no grupo do virus do "spotted wilt" Costa, A. S. Forster, R. Resumo em Inglês: The physical properties, vectors, differential hosts and host range of the "vira-cabeça" virus, were compared with those of the following viruses : spotted wilt virus, tomato tip-blight virus, kromneck virus, "corcova" virus and the virus described by Azevedo (3). As a result of this comparison it is pointed out that these viruses are alike or at least closely related to each other. |
Influência do manganês sobre o desenvolvimento do arroz cultivado em solução nutritiva: nota prévia Paiva Neto, J. E. de Franco, Coarací M. |