Data/hora: 23/09/2024 20:12:37

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	14/10/1999	
Data da última atualização: 	25/05/2023	
Autoria: 	WANG, H.-L.; YEH, S.-D.; CHIU, R.-J.; GONSALVES, D.	
Afiliação: 	Department of Plant Protection; Department of Plant Pathology; University, Taichung, Taiwan, Republic of China.	
Título: 	Effectiveness of Cross-Protection by mild mutants of Papaya ringspot virus for control of ringspot disease of Papaya in Taiwan.	
Ano de publicação: 	1987	
Fonte/Imprenta: 	Plant Disease, v.71, n.6, p.491-497, 1987	
Idioma: 	Inglês	
Conteúdo: 	Two mild nitrous acid-induced mutants (PRV HA 5-1 and 6-1) of papaya ringspot virus (PRV) were tested under greenhouse and field conditions to study the potential of cross-protection for control of papaya ringspot disease of papaya in Taiwan. Under greenhouse conditions, both mutants caused only mild or symptomless infection on test plants in Chenopodiaceae and Cucurbitaceae families and on the major papaya cultivar of Taiwan, Tannung No.2. Also, under greenhouse conditions, HA5-1 and HA 6-1 provided a high degree of protection in papaya against the severe effects of two prevalent PRV strains of Taiwan. Large numbers of papaya seedlings were infected by applying inocula with a spray gun (equipped with a 1.2-mm-diameter nozzle), using pressures of 4-8kg/cm2 at distances of 10-20cm.	
Thesagro: 	Mamão.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
Exemplares: 	CNPMF - (17375-1) - ADD - AP - DD - Publicação digital -  -  - DIS