Data/hora: 15/06/2024 05:00:03

Biblioteca(s): | Embrapa Gado de Corte.
Data corrente: | 21/02/2006
Data da última atualização: | 09/01/2012
Autoria: | JANK, L.; VALLE, C. B. do; CARVALHO, J. de; CALIXTO, S.
Afiliação: | Embrapa Gado de Corte (Campo Grande, MS).
Título: | Evaluation of guineagrass (Panicum maximum Jacq) hybrids in Brazil.
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. 498-499. (ID n. 12-13)
Idioma: | Inglês
Notas: | CNPGC.
Conteúdo: | Guineagrass (Panicum maximum Jacq.) is responsible for a high percentage of cattle finishing and milk production in Brazil, but presents  problems of pasture degradability due to high soil fertility requirements and uneven production distribution. In order to search for new varieties to reduce these problems, over four hundred to Brazil in 1982. Agronomic evaluation took place at the National Beef Cattle Research Center of The Brazilian Agricultural Research Corporation (Embrapa Beef Cattle), in Campo Grande, MS, Brazil. Breeding of the apomictic species began in 1990 using sexual x apomictic crosses. Three sexual plants and five apomictic accessions were used  in the croses. Seventy-nine hybrids were evaluated in small pltos, for forage yield, regrowth after cuts, flowering and vigor during three years, The best familes were identified for each characteristic evaluated .Multivariate analysis using principal components grouped the hybrids into six  clusters according  to  their production. Due to superior perfomance, hybrids in groups 6 and 1 (22 hybrids) were indicated for future regional trial in small plot evaluation and grazing studies  aiming at releasing new cultivars for pasture diversification in Brazil.
Palavras-Chave: | Avaliação; Brasil; Evaluation; Selection.
Thesagro: | Apomixia; Melhoramento Genético Vegetal; Panicum Maximum; Seleção.
Thesaurus Nal: | apomixis; Brazil; plant breeding.
Categoria do assunto: | --
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (11094-1) - UPC - PL - -- - 633.2 - I61p -  - DIS