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| FADEL, A. L.; MOURÃO FILHO, F. de A. A.; STUCHI, E. S.; WULFF, N. A.; COUTO, H. T. Z.. |
| Citrus sudden death (CSD) is a highly destructive disease and has caused the eradication of millions of trees in southern Brazil within the last 15 years. In spite of the exact cause of CSD has not been determined, evidences have shown that this disease can be transmitted by biotic vectors. Disease incidence in sweet orange scions is related to the rootstock, and the combination with ?Rangpur? lime is the most affected. On the other hand, there are evidences of a relation between CSD affected trees and the presence of the Citrus sudden death associated virus (CSDaV) and/or Citrus tristeza virus (CTV). Based on such information, this study has been carried out to determine the presence of CSDaV and CTV, and the association between each other in eleven... |
| Tipo: Separatas |
Palavras-chave: Fruta Cítrica; Doença de Planta; Laranja Doce; Tristeza Cítrica; Plant diseases and disorders; Replant disease; Oranges; Citrus tristeza virus. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1095681 |
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| SANCHES, M. M.; WULFF, N. A.; SILVA, M. R. L.; LEITE JUNIOR, R. P.; FERREIRA, E. A.; SANTOS, J. F. dos; LOPES SILVA, M.; ANGARTEN, M. B. de O.; ISHIDA, A. K. N.; OLIVEIRA, R. P. de; LUCCAS, B. E. G. de; CARBONARI, J. J.; MARTINS, O. M.. |
| O huanglongbing (HLB) é a doença de citros mais importante no mundo. No Brasil tem como agentes etiológicos ?Candidatus Liberibacter asiaticus? e ?Ca. Liberibacter americanus?. Também há associação de fitoplasmas do grupo 16SrIX com sintomas de HLB, porém tratando-se de outro patossistema. No Brasil, ?Ca. Liberibacter? é uma praga regulamentada com o status de quarentenária presente nos Estados de São Paulo (SP), Minas Gerais (MG) e Paraná (PR). Este levantamento teve como objetivos identificar a presença de plantas com sintomas de HLB em pomares de citros e realizar a diagnose dos agentes etiológicos. Pomares de laranjeira doce, limeira e tangerineira nos Estados da Bahia (BA), Pará (PA), Rio Grande do Sul (RS), Minas Gerais (MG) e Paraná (PR), e no... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Huanglongbing; Fitoplasma; 16SrIX. |
| Ano: 2018 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1095012 |
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| MURCIA, N.; BANI HASHEMIAN, S. M.; BEDERSKI, K.; WULFF, N. A.; BARBOSA, C. de J.; BOVÉ, J. M.; DURAN-VILA, N.. |
| The so-called "quebra-galho" clone of Tahiti lime is very popular in Brazil, because the small size of the trees is suitable for high-density plantings. These Tahiti lime trees are easily recognized because they show bark-cracking symptoms, that have been claimed to be associated with "exocortis" infection. Viroid infection of three "quebra-galho" Tahiti lime trees from a farm near Araraquara in the state of São Paulo, Brazil, was assessed by Northern-blot hybridization using viroid-specific probes. Similarly, eight clones of Tahiti lime from different origins and available at Topara Nursery, near Chincha, Peru, were also tested for viroids. The four clones that displayed characteristic bark-cracking symptoms were found to be infected with Citrus exocortis... |
| Tipo: Separatas |
Palavras-chave: Citrus viroids; CEVd; Quebra-galho; Wood pocket. |
| Ano: 2010 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/879642 |
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