Data/hora: 25/06/2024 19:18:48

Biblioteca(s): 	Embrapa Gado de Corte.	
Data corrente: 	19/06/1998	
Data da última atualização: 	11/07/2007	
Autoria: 	CHAKRABORTY, S.; PERROT, R.; CHARCHAR, M. J. D'A.; FERNANDES, C. D.; KELEMU, S.	
Afiliação: 	CSIRO. Division of Tropical Crops and Pastures.	
Título: 	Variation in the Stylosanthes anthracnose pathogen: implications for australian cultivars.	
Ano de publicação: 	1997	
Fonte/Imprenta: 	In: INTERNATIONAL GRASSLAND CONGRESS, 18., 1997, Winnipeg, Saskatoon. Proceedings... [S.l.: s.n., 1997?].	
Páginas: 	p. 13-1 / 13-2.	
Idioma: 	Inglês	
Notas: 	CNPGC.	
Conteúdo: 	lsolates of Colletotrichun gloeosporioides wtich cause antracnose disease in the tropical pasture legume Stylosanthes were collected from its centre of diversity in South America. These and other isolates  from Asia, Africa and Australia were studied using Random Amplified Polymorphic DNA (RAPD) markers and virulence on host differentials to assess the threat to Australian Stylosanthes cultivars from exotic races ofthis pathogen. A phenetic analysis of 90 isolates using RAPD markers showed a wide genetic diversity in the overall pathogen population. Compared to this, genetic diversity in the Australian population was very limited. A similar situation was noted for pathogenic variation where 43 of the 69 South American isolates could not be classified using linear discriminant functions developed using isolates of the current Australian races. Some isolates from Brazil caused serious anthracnose on Australian cultivars and accessions which are moderate to highly resistant to the Australian  races. If accidentally introduced, these isolates may pose a potential threat to the Australian Stylosanthes cultivares.	
Palavras-Chave: 	Anthracnosis; Brasil; Patogenecidade.	
Thesagro: 	Antracnose; Colletotrichum Gloeosporioides; Marcador Genético; Variedade.	
Thesaurus Nal: 	Australia; Brazil; genetic markers; pathogenicity; Stylosanthes; varieties.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Gado de Corte (CNPGC)	
Exemplares: 	CNPGC - (2421-1) - UPC - PL - -- - 633.2 - I61p - 1998.00021 - DIS