Data/hora: 08/06/2024 02:20:43

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	27/09/1993	
Data da última atualização: 	27/09/1993	
Autoria: 	BERETTA, M. J. G.; ROSSETTI, V.; TEIXEIRA R. R. AND SEMPIONATO O.	
Afiliação: 	Instituto Biologico, C.P. 7119, 01000 Sao Paulo, Brazil.	
Título: 	Positive diagnostic tests for declinio on plants root-graft inoculated in Brazil.	
Ano de publicação: 	1991	
Fonte/Imprenta: 	Riverside, California: International Organization of Citrus Virologists, 1991.	
Páginas: 	p.256-260	
Idioma: 	Inglês	
Notas: 	Conference of the International Organization of Citrus Virologists, 11., 1991, Riverside, California, Proceedings...	
Conteúdo: 	In 1984, a transmission trial was begun in an orchard affected by declinio. Two of four healthy nursery plants (receptors), were approach-root-grafted to each of 10 adult donor trees. The other two plants of each group were kept as controls to monitor soil effects and natural spread of declinio. Periodically, declinio diagnostic tests were applied to the receptors and controls. The tests used were: water uptake by syringe injection, accumulation of zine in the trunk wood, percentage of amorphous plugs and observation of visual symptoms. The first evalution was made in February 1986 when the plants were at the original site. At this time all trees tested negative for declinio. In 1986 all the plants were moved to the Bebedouro Experiment Station. In May 1987 atBebedouro, the diagnostic tests were still negative, but by December 1987, two of the inoculated plants showed visual symptoms of declinio. In March 1989, visual symptoms were present and all of the declinio diagnostic tests were positive for the root-grafted receptor plants. Tests on the control trees were normal. These results showed that declinio can be transmitted by approach-root-grafting in Brazil.	
Palavras-Chave: 	Cintrange 'Carrizo'; Controle; Porta-enxerto.	
Thesagro: 	Doença; Laranja.	
Thesaurus Nal: 	blight.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
Exemplares: 	CNPMF - (13307-1) - ADC - PL - -- - 634.3040601 - C748p - 1992000183 - DIS