Data/hora: 23/09/2024 13:51:30

Biblioteca(s): 	Embrapa Gado de Leite.	
Data corrente: 	12/12/2018	
Data da última atualização: 	02/07/2024	
Autoria: 	STIDA, W. F.; DAHER, R. F.; VIANA, A. P.; VIDAL, A. K. F.; FREITAS, R. S.; SILVA, V. B. da; PEREIRA, A. V.; CASSARO, S.; MENEZES, B. R. da S.; FURLANI, E. P.	
Afiliação: 	WANESSA F. STIDA, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE DARCY RIBEIRO; ROGÉRIO F. DAHER, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE DARCY RIBEIRO; ALEXANDRE P. VIANA, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE DARCY RIBEIRO; ANA KESIA F. VIDAL, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE DARCY RIBEIRO; RAFAEL S. FREITAS, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE DARCY RIBEIRO; VERÔNICA B. DA SILVA, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE DARCY RIBEIRO; ANTONIO VANDER PEREIRA, CNPGL; SABRINA CASSARO, UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE DARCY RIBEIRO; BRUNA R. DA S. MENEZES, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; EDUARDO P. FURLANI, UNIVERSIDADE FEDERAL DE JUIZ DE FORA.	
Título: 	Estimation of genetic parameters and selection of elephant-grass ( Pennisetum purpureum Schumach.) for forage production using mixed models.	
Ano de publicação: 	2018	
Fonte/Imprenta: 	Chilean journal of agricultural research, v. 78, n. 2, p. 198-204, 2018.	
DOI: 	10.4067/S0718-58392018000200198	
Idioma: 	Inglês	
Conteúdo: 	The efficient use of fodder and grassland as the basis of animal feed represents a way of raising productivity and reducing production costs. In this scenario, elephant-grass stands out among the most used forages in the intensive animal production systems in the world mainly due to its high productive potential, support capacity and nutritional quality. The purpose of this work was to estimate genetic parameters for the selection of elephant-grass (Pennisetum purpureum Schumach.) clones for forage production in two seasons, a period of water restriction and the total period of study. We evaluated 80 accessions of elephant-grass by means of the mixed-models methodology (REML/BLUP). The evaluation of DM yield (DMY) of the different genotypes were executed in edaphoclimatic conditions in Campos dos Goytacazes, Rio de Janeiro, Brazil. The Selegen-REML/BLUP software accomplished the statistical and genetic analyses. It was seen that the DMY trait was with a low estimate of coefficient of genotypic variation (3.08%), which demonstrates possible difficulties with the selection for this trait. Heritability-coefficient estimate was 0.3606 for the dry season and 0.4193 for the total period. Those results were the variation in that trait due to genetic causes. Although those values may not be considered of high magnitude, they are of great interest for the breeding mainly because it is a polygenic trait. In both periods, genotypes 7, 25, 41, 43, 57, 58, 62, 64, 68, and 77 stood out among the others, since it presented the highest genetic gains for DMY, which will enhance progress in the evaluated trait.	
Palavras-Chave: 	Dry matter yield; Genetic variability; Selective accuracy.	
Thesagro: 	Pennisetum Purpureum.	
Thesaurus Nal: 	Forage production.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/188216/1/Cnpgl-2018-ChileanJar-Vander-Estimation.pdf	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CNPGL - (24292-1) - UPC - AP - DD -  -  -  - DIS