Data/hora: 23/09/2024 15:42:53

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	24/04/1997	
Data da última atualização: 	24/04/1997	
Autoria: 	CARPENTER, J. B.	
Afiliação: 	U. S. Date Field Station, Indio, California.	
Título: 	Present status of some investigations on stubborn disease of citrus in the united states	
Ano de publicação: 	1959	
Fonte/Imprenta: 	Riverside, California: University of California, 1959	
Páginas: 	p.101-107	
Idioma: 	Inglês	
Notas: 	In: CONFERENCE ON CITRUS VIRUS DISEASES, 1957, Riverside, California. Proceedings... Riverside, California: University of California, 1959.	
Conteúdo: 	Stubborn disease in citrus is considered to be caused by a virus entity or complex. Mature acorn-shaped fruits provide the best single diagnostic symptom of stubborndisease. Blue albedo in fruits is believed to be a characteristic symptom but its specificity has not been established. Poor tree condition in conjunction with other symptoms is a useful, but nonspecific indicator. Mummified fruits, off-bloom, and autumnal defoliation are secondary indicators of stubborn. No diagnostic foliage condition has been observed. Stubborn has been identified tentatively in individual trees of 26 varieties of grapefruit, 10 of orange, 4 of tangelo, and 3 of shaddock. A suitable indicator plant for stubborn is being sought ammong 60 species and varieties of Citrus. About 40 trees with stubborn disease are being indexed to determine whether known viruses are associated consistently with this disease, and to find sources of stubborn virus free of other virus entities or complexes.	
Palavras-Chave: 	Citriver pertinaciae; Citrus sp; Congress; Congresso; Cultivar Valencia; Disease; Grapefruit; Laranja navel; Navel orange; Sweet orange; Valencia cultivation.	
Thesagro: 	Doença; Laranja Doce; Pomelo.	
Thesaurus Nal: 	Citrus.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
Exemplares: 	CNPMF - (13735-1) - ADD - PL - -- - 634.30406 - C748v - 1981000254 - DIS