Data/hora: 01/06/2024 01:20:26

Biblioteca(s): 	Embrapa Milho e Sorgo.	
Data corrente: 	10/06/1997	
Data da última atualização: 	05/02/2014	
Autoria: 	CASELA, C. R.	
Título: 	Investigations on the variability of the sorghum anthracnose fungus colletotrichum graminicola.	
Ano de publicação: 	1992	
Fonte/Imprenta: 	Texas: Texas A&M University, 1992.	
Páginas: 	166p.	
Idioma: 	Inglês	
Notas: 	Doctor Sc. Thesis.	
Conteúdo: 	Laboratory and greenhouse experiments were conducted to: 1) investigate the diversity in the sorghum anthracnose fungus Colletotrichum graminicola using biotechnological and conventional techniques; 2) study the pathogenic variability among monoconidial isolates from isolates leaf lesions and monoconidial cultures; and 3) evaluate mutation as a mechanical contributing to pathogenic variability in this organism. For the first study, monoconidial isolates of C. graminicola were established from collections made in commercial fields and experimental trials during 2 consecutive years from 4 regions of Brazil (Central, South, Southeast, and Northeast) and from the sorghum anthracnose flora of Texas and Georgia in the United State. A total of 78 monoconidial isolates were investigated for variability in virulence on 8 differential sorghum cultivars and in RAPAD (Random Amplified Polymorphic DNA) banding patterns as defined by 8 primers. Average between clusters as defined by these markers. The same or related virulence phenotypes were composed by genetically distant isolates when analyzed by RAPD markers. Isolates of C. graminicola within the same or related RAPD pattern were obtained from distant regions, indicating that populations of this pathogen are not geographically defined. Pathogenicity of monoconidial cultures from a discrete lesion and from monoconidial cultures and sub-cultures from the sorghum cultivars Tx623 and SC748-5 was evaluated on 5 differentials. Monoconidial isolates from single (...)	
Palavras-Chave: 	Disease; Fungus.	
Thesagro: 	Antracnose; Doença; Fungo; Sorghum Bicolor; Sorgo.	
Thesaurus Nal: 	anthracnose; Colletotrichum.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Milho e Sorgo (CNPMS)	
Exemplares: 	CNPMS - (3169-1) - ADD - TS - PP - T.14/92 -  - T.14/92 - DIS