Data/hora: 21/06/2024 11:56:11

Biblioteca(s): 	Embrapa Gado de Corte.	
Data corrente: 	21/02/2006	
Data da última atualização: 	10/03/2008	
Autoria: 	GROF, B.; FERNANDES, C. D.; FERNANDES, A. T. F.	
Título: 	A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata.	
Ano de publicação: 	2001	
Fonte/Imprenta: 	In: INTERNATIONAL GRASSLAND CONGRESS, 19., 2001, São Pedro. Grassland ecosystems: an outlook into the 21st century: proceedings. Piracicaba: Sociedade Brasileira de Zootecnia: FEALQ, 2001.	
Páginas: 	 p. 525-526. (ID n. 13-01)	
Idioma: 	Inglês	
Notas: 	CNPGC.	
Conteúdo: 	An improved cultivar, based on17 genotypes of S.cpitata and six of S.macrocephala, was developed at the Embrapa Beef Cattle Research Center. Campo Grande, Brazil. The aim was o create durable, race non-spedific resistance to anthracnose controlled by polygenic factors. A mass hybridisation technique was employed to produce a higth degree of genetic diversity and sizeable quantities of seed of hybriderived progenies of Brazilian and Venezuelan genotypes of S.capitata. Outcrossing resulted in a significant improvement in the forage production of progeny of Venezuelan accessions. The multicross was evaluated in multilocational trials, each representing a large tract of country  in the Cerradis ecosystem along  a north-south transect from lat 6 to 20 S. The genetic shift that accourred in  S. capitata was a key element in the formation of the new cultivar. It is a complex mixture of two especies, and a reombination of murch desired forage tratis of Brazilian x Venezuelan genotypes, high forage and seed yields coupled eith anthracnose resistance. The new cultivar with its diverse genetic make up has  a wide application in the acid-soil savannas of tropical America. It was released by Embrapa for the Cerrados in 2000.	
Thesagro: 	Antracnose; Cerrado; Hibridação; Variedade Resistente.	
Thesaurus Nal: 	anthracnose; genetic variation; hybridization; savannas; Stylosanthes capitata.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Gado de Corte (CNPGC)	
Exemplares: 	CNPGC - (11096-1) - UPC - PL - -- - 633.2 - I61p -  - DIS