| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
|
Data corrente: |
06/04/2004 |
|
Data da última atualização: |
06/04/2004 |
|
Autoria: |
COSTA, I. R. |
|
Afiliação: |
Embrapa Mandioca e Fruticultura, Cruz das Almas. |
|
Título: |
The Brazilian Core Collection of cassava. |
|
Ano de publicação: |
1998 |
|
Fonte/Imprenta: |
Revista Brasileira de Mandioca, Cruz das Almas, v. 17, p.15, nov., 1998. Suplemento. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: The Germplasm Collections size has become an important limitation for their use in plant breeding programs. To overcome this limitation the Core Collection concept has been proposed. A Core Collection consists of a set of accessions selected to represent the genetic diversity of the total collection with minimum repetitiveness. This insures the conservation of maximum genetic variation, allowing rapid evaluation of germplasm, and better access to the total collection. The Brazilian Cassava Germplasm Collection is the largest national collection, and contains strategic genetic variation for the development of breeding programs worldwide. It consist of approximately 4100 accessions conserved in five regional Active Germplasm Banks. To develop the Core Collection a hierarquical stratification was used. Two criteria were used for the stratification of the accessions: category and origin. According to category the accessions were classified as landraces or improved materials. Within the landraces stratum, accessions were classified according to ecogeographical origin using the Geographic Information System. The selection of the accessions of the Core, was done trying to represent the ecological diversity within each ecogeographic zone, and incorporating the knowledge and experience of breeders and curators. This Core Collections will be a logical and efficient starting point for studying the total Collections using biotechnological tools. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01816naa a2200121 a 4500
001 1651846
005 2004-04-06
008 1998 bl uuuu u00u1 u #d
100 1 $aCOSTA, I. R.
245 $aThe Brazilian Core Collection of cassava.
260 $c1998
520 $aAbstract: The Germplasm Collections size has become an important limitation for their use in plant breeding programs. To overcome this limitation the Core Collection concept has been proposed. A Core Collection consists of a set of accessions selected to represent the genetic diversity of the total collection with minimum repetitiveness. This insures the conservation of maximum genetic variation, allowing rapid evaluation of germplasm, and better access to the total collection. The Brazilian Cassava Germplasm Collection is the largest national collection, and contains strategic genetic variation for the development of breeding programs worldwide. It consist of approximately 4100 accessions conserved in five regional Active Germplasm Banks. To develop the Core Collection a hierarquical stratification was used. Two criteria were used for the stratification of the accessions: category and origin. According to category the accessions were classified as landraces or improved materials. Within the landraces stratum, accessions were classified according to ecogeographical origin using the Geographic Information System. The selection of the accessions of the Core, was done trying to represent the ecological diversity within each ecogeographic zone, and incorporating the knowledge and experience of breeders and curators. This Core Collections will be a logical and efficient starting point for studying the total Collections using biotechnological tools.
773 $tRevista Brasileira de Mandioca, Cruz das Almas$gv. 17, p.15, nov., 1998. Suplemento.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
16/08/2021 |
|
Data da última atualização: |
16/08/2021 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 1 |
|
Autoria: |
FERNANDES, A. M.; OLIVEIRA, T. S. de; JORDAO, A. R.; PACIULLO, D. S. C.; BAFFA, D. F.; CAMILO, M. G. |
|
Afiliação: |
ALBERTO MAGNO FERNANDES, Universidade Estadual do Norte Fluminense; TADEU SILVA DE OLIVEIRA, Universidade Estadual do Norte Fluminense; ALISSON RODRIGUES JORDÃO, Instituto Federal do Maranhão; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; DANIELLE FERREIRA BAFFA, Universidade Estadual do Norte Fluminense Darcy Ribeiro; MICHELE GABRIEL CAMILO, Universidade Estadual do Norte Fluminense Darcy Ribeiro. |
|
Título: |
Pasture characteristics and productive performance of dairy cows under two grazing management strategies. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Semina. Ciências Agrárias, v. 41, n. 3, p. 1017-1026, maio/jun. 2020. |
|
DOI: |
https://doi.org/10.5433/1679-0359.2020v41n3p1017 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The objective of this work was to evaluate the supply, morphological and chemical composition of forage, performance and milk composition of crossbred cows managed in Megathyrsus maximus cv. Tanzania in intermittent grazing system with fixed and variable defoliation intervals according to the interception of 95% of photosynthetically active radiation by the canopy. The experimental design was a randomized complete block design with two treatments and two area replications. In each grazing cycle the supply, morphological composition, forage nutritive value, dry matter intake, milk production and composition were determined. The experimental area was 4.0 hectares, divided into two blocks of 2 hectares. Each block was subdivided into 22 pickets (11 for each treatment) totaling 44 pickets with an area of 909 m2 each. Significant differences (P < 0.05) were observed for leaf blade content, in vitro digestibility of dry matter and forage crude protein, dry matter intake, individual and area milk production and lactose content milk, being the highest values found in the pastures managed with variable defoliation interval. Thus, the defoliation interval defined by the 95% interception of the photosynthetically luminosity leads to higher leaf blade proportions in the forage canopy, resulting in higher individual milk yield and per unit area, but with a loss of protein and total solids contents of milk. |
|
Thesagro: |
Bovino; Gado Leiteiro; Pastagem; Pastejo; Produção Leiteira. |
|
Thesaurus NAL: |
Dairy cows; Grazing; Megathyrsus maximus; Milk yield. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225194/1/Pasture-characteristics.pdf
|
|
Marc: |
LEADER 02325naa a2200301 a 4500
001 2133586
005 2021-08-16
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5433/1679-0359.2020v41n3p1017$2DOI
100 1 $aFERNANDES, A. M.
245 $aPasture characteristics and productive performance of dairy cows under two grazing management strategies.$h[electronic resource]
260 $c2020
520 $aThe objective of this work was to evaluate the supply, morphological and chemical composition of forage, performance and milk composition of crossbred cows managed in Megathyrsus maximus cv. Tanzania in intermittent grazing system with fixed and variable defoliation intervals according to the interception of 95% of photosynthetically active radiation by the canopy. The experimental design was a randomized complete block design with two treatments and two area replications. In each grazing cycle the supply, morphological composition, forage nutritive value, dry matter intake, milk production and composition were determined. The experimental area was 4.0 hectares, divided into two blocks of 2 hectares. Each block was subdivided into 22 pickets (11 for each treatment) totaling 44 pickets with an area of 909 m2 each. Significant differences (P < 0.05) were observed for leaf blade content, in vitro digestibility of dry matter and forage crude protein, dry matter intake, individual and area milk production and lactose content milk, being the highest values found in the pastures managed with variable defoliation interval. Thus, the defoliation interval defined by the 95% interception of the photosynthetically luminosity leads to higher leaf blade proportions in the forage canopy, resulting in higher individual milk yield and per unit area, but with a loss of protein and total solids contents of milk.
650 $aDairy cows
650 $aGrazing
650 $aMegathyrsus maximus
650 $aMilk yield
650 $aBovino
650 $aGado Leiteiro
650 $aPastagem
650 $aPastejo
650 $aProdução Leiteira
700 1 $aOLIVEIRA, T. S. de
700 1 $aJORDAO, A. R.
700 1 $aPACIULLO, D. S. C.
700 1 $aBAFFA, D. F.
700 1 $aCAMILO, M. G.
773 $tSemina. Ciências Agrárias$gv. 41, n. 3, p. 1017-1026, maio/jun. 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
