Data/hora: 16/06/2024 17:20:09

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	26/08/1996	
Data da última atualização: 	26/08/1996	
Autoria: 	OLSON, E. O.	
Afiliação: 	U.S. Department of Agriculture and Texas Agricultural Experiment Station, Weslaco, Texas.	
Título: 	Symptomless carriers and their role in the spread of citrus viruses.	
Ano de publicação: 	1959	
Fonte/Imprenta: 	California: Citrus Virus Deseases, p.185-189, 1959	
Idioma: 	Inglês	
Conteúdo: 	Many individuals and organizations have unwittingly introduced citrus viruses into new areas or spread them around the world, usually in budwood from or in apparently healthy plants. Viruses spread in this manner include psorosis, tristeza, cachexia, xyloporosis, and exocortis.Virus-infected but apparently healthy plants have become reservoirs of infection from which the citrus viruses have been spread by man from one country to another and from one citrus variety to another. When a virus like tristeza is once introduced, insects may spread it from tree to tree and orchard to orchard. Virus spread is not evident in symptomless plants. It is detected only in virus-sensitive plants when there are recognizable symptoms on leaves stems, or bark, and when stunting or death occurs.                                                     	
Palavras-Chave: 	Citros; Diseases; Doencas virus.	
Thesaurus Nal: 	Citrus.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
Exemplares: 	CNPMF - (16791-1) - ADC - SP - -- - S602 -  - S602 - DIS