Data/hora: 12/06/2024 11:04:02

Biblioteca(s): 	Embrapa Arroz e Feijão.	
Data corrente: 	27/10/2004	
Data da última atualização: 	04/11/2004	
Autoria: 	GRAVINA, G de A.; MARTINS FILHO, S.; SEDIYAMA, C. S.; CRUZ, C. D.	
Título: 	Joint scaling test to estimate genetic parameters of soybean resistance to frogeye leaf spot.	
Ano de publicação: 	2003	
Fonte/Imprenta: 	Crop Breeding and Applied Biotechnology, Londrina, v. 3, n. 1, p. 53-60, Mar. 2003.	
Idioma: 	Inglês	
Conteúdo: 	To study the inheritance of soybean resistance to Cercospora sojina Hara, genetic parameters were estimated using means and variances of populations derived from a cross between a resistant and a susceptible cultivar, namely, 'Uberaba' and  'Bossier', respectively. The parents and the F1, F2, BC1 and BC2, generations were evaluated for six characteristics associated with the disease: visually evaluated infection degree, number of lesions per leaflet, lesion mean diameter, percentage of lesioned leaf area, number of lesions per square centimeter and disease index. The additive genetic effect was the most important in the determination of all traits related to soybean resistance to frogelye leaf spot. The infection degree, a subjective trait that considers the set of all resistance related characteristics in its constitution, presented positive variance and lower influence of the enrironment, consisting in a useful variable in programs of soybean breeding aiming at the resistance to C. sojina. All traits presented at least one type (aa, ad or dd) of significant epistatic interaction and the full model  (additive + dominant + epistatic) was more adequate to describe the resistance.	
Palavras-Chave: 	Cercospora sojina hara; Generation analysis; Soybean.	
Thesagro: 	Cercosporiose; Glycine Max; Resistência; Soja.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (21798-1) - ADD - AP - -- - 631.05 - C - 2004.00146 - DIS