| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
15/01/2008 |
|
Data da última atualização: |
25/02/2015 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
COELHO, G. C.; RACHWAL, M. F. G.; DEDECEK, R. A.; CURCIO, G. R.; NIETSCHE, K.; SCHENKEL, E. P. |
|
Afiliação: |
Geraldo C. Coleho, UNIJUÍ; Marcos Fernando Gluck Rachwal, Embrapa Florestas; Renato Antonio Dedecek, Embrapa Florestas; Gustavo Ribas Curcio, Embrapa Florestas; Klaus Nietsche, EMATER-PR; Eloir P. Schenkel, UFSC. |
|
Título: |
Effect of light intensity on methylxanthine contents of Ilex paraguariensis A. St. Hil. |
|
Ano de publicação: |
2007 |
|
Fonte/Imprenta: |
Biochemical Systematics and Ecology, v. 35, n. 2, p. 75-80, fev. 2007. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Maté (Ilex paraguariensis A. St. Hil.) is a shade-tolerant species, frequently cultivated on agroforestry systems or even in monoculture. Secondary metabolism of mate´ includes the methylxanthines, caffeine and theobromine. Shading could alter the quantitative profile of these compounds in the plant, and since the secondary chemistry of maté is decisive to determine the quality of raw material, the caffeine and theobromine content under different light intensities were investigated. Artificial shading obtained by a nylon screen and natural shading produced by other trees were tested. Methylxanthines content was increased with the reduction of light, but only in the low light intensity treatment. A negative correlation was found between biomass accumulation and methylxanthines content. But the total methylxanthines yield per plant was not altered. |
|
Palavras-Chave: |
Efeito; Luz; Methylxanthine. |
|
Thesagro: |
Ilex Paraguariensis. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01531naa a2200229 a 4500
001 1305068
005 2015-02-25
008 2007 bl uuuu u00u1 u #d
100 1 $aCOELHO, G. C.
245 $aEffect of light intensity on methylxanthine contents of Ilex paraguariensis A. St. Hil.$h[electronic resource]
260 $c2007
520 $aMaté (Ilex paraguariensis A. St. Hil.) is a shade-tolerant species, frequently cultivated on agroforestry systems or even in monoculture. Secondary metabolism of mate´ includes the methylxanthines, caffeine and theobromine. Shading could alter the quantitative profile of these compounds in the plant, and since the secondary chemistry of maté is decisive to determine the quality of raw material, the caffeine and theobromine content under different light intensities were investigated. Artificial shading obtained by a nylon screen and natural shading produced by other trees were tested. Methylxanthines content was increased with the reduction of light, but only in the low light intensity treatment. A negative correlation was found between biomass accumulation and methylxanthines content. But the total methylxanthines yield per plant was not altered.
650 $aIlex Paraguariensis
653 $aEfeito
653 $aLuz
653 $aMethylxanthine
700 1 $aRACHWAL, M. F. G.
700 1 $aDEDECEK, R. A.
700 1 $aCURCIO, G. R.
700 1 $aNIETSCHE, K.
700 1 $aSCHENKEL, E. P.
773 $tBiochemical Systematics and Ecology$gv. 35, n. 2, p. 75-80, fev. 2007.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 3 | |
| 1. |  | COELHO, G. C.; RACHWAL, M.; SCHNORRENBERGER, E.; SCHENKEL, E. P. Efeito do sombreamento sobre a sobrevivencia, morfologia e quimica da erva-mate. In: CONGRESSO SUL-AMERICANO DA ERVA MATE, 2.; REUNIAO TECNICA DA ERVA MATE, 3., 2000, Encantado. Anais. Porto Alegre: Comissao dos Organizadores / Universidade do Rio Grande do Sul / Fundacao Estadual de Pesquisa Agropecuaria, 2000. p.396-399.| Biblioteca(s): Embrapa Florestas. |
|    |
| 3. | | COELHO, G. C.; RACHWAL, M. F. G.; DEDECEK, R. A.; CURCIO, G. R.; NIETSCHE, K.; SCHENKEL, E. P. Effect of light intensity on methylxanthine contents of Ilex paraguariensis A. St. Hil. Biochemical Systematics and Ecology, v. 35, n. 2, p. 75-80, fev. 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Florestas. |
|  |
| Registros recuperados : 3 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
