Produção de fitomassa, teor e composição química do óleo essencial de Baccharis dracunculifolia DC. em função da adubação orgânica
Carregando...
Data
2011-09-27
Autores
Santos, Rosângela Ferreira dos [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
Objetivou-se avaliar as características de Baccharis dracunculifolia DC., em função de doses de adubo orgânico. Foram utilizadas mudas de alecrim-do-campo produzidas por semente, e mantidas sob sombrite 50%, pelo período de 84 dias até serem transplantadas para o campo, no espaçamento de 1,0 x 1,0 m, com irrigação por gotejamento. O delineamento estatístico utilizado foi em blocos ao acaso, com quatro repetições, e as doses de composto orgânico, de zero, 10, 20, 30, 40 e 50 t ha-1, que foram os tratamentos. Foi realizada uma colheita, aos 150 dias após o transplante das mudas. Foi avaliado o crescimento das plantas nos parâmetros: altura, diâmetro do caule e da copa e as variáveis massa seca da parte aérea útil, teor de óleo essencial, produtividade, composição química e a produtividade dos componentes do óleo essencial, O óleo essencial foi extraído por hidrodestilação e analisados em cromatógrafo a gás acoplado a espectrômetro de massas (Shimadzu, QP-5000). A identificação dos constituintes químicos foi realizada através da análise comparativa dos espectros de massas das substâncias com o banco de dados do sistema CG-EM (Nist 62.lib), literatura e índice de retenção. Os dados foram submetidos à análise de variância pelo teste F, às médias obtidas foram submetidas à análise de regressão e o teste Tukey, para o efeito das doses de composto orgânico. De acordo com os resultados obtidos, conclui-se que para os parâmetros altura, diâmetro do caule, diâmetro da copa e fitomassa seca da parte aérea útil, a dose 50 t ha-1 apresentou o melhor resultado. Para o teor do óleo essencial, produtividade do óleo essencial, produtividade dos componentes gama-muuroleno, valenceno, sigma-cadineno, E-nerolidol e espatulenol, a dose 30 t ha-1 obtive o melhor resultado. Para a produtividade do componente...
In order to evaluate the characteristics of Baccharis dracunculifolia DC., according to levels of organic fertilizer, seedlings of alecrim-do-campo were produced by seeds, and kept under shade for a period of 90 days before being transplanted to the field, with spacing of 1.0 x 1.0 m, with drip irrigation. The statistical design was randomized blocks with four replications, and doses of organic compost were: 0, 10, 20, 30, 40 and 50 t ha-1. We performed a harvest at 150 days after transplanting. We evaluated the plant growth parameters: height, stem diameter and crown diameter and variables as dry mass of useful aerial part, content, productivity and productivity of the components of essential oil. The essential oils were extracted by hydrodistillation and analyzed by chromatography gas coupled to mass spectrometer (Shimadzu, QP-5000). The identification of chemical constituents was performed by comparative analysis of mass spectra of substances with the database system CG-EM (Nist 62.lib), literature and retention rates. All results were submitted to analysis of variance, regression, and Tukey test for the effect of doses of organic compost. For the parameters height, stem diameter, crown diameter and dry mass of useful aerial part, the doses studied influenced the plants, which showed the best results at a dose 50 t ha-1, and this. For content and productivity of the essential oil, the doses studied influenced the plants, which in dose 30 t ha-1 obtained the best results. Productivity of components gama-muurolene, valencene, sigmacadinene and E-nerolidol the doses studied influenced the plants, which in dose 30 t ha-1 obtained the best results for all of them. If the goal in the cultivation of B. dracunculifolia is the component espatulenol dosages 30 and 40 t ha-1 obtained the best results. For the productivity... (Complete abstract click electronic access below)
In order to evaluate the characteristics of Baccharis dracunculifolia DC., according to levels of organic fertilizer, seedlings of alecrim-do-campo were produced by seeds, and kept under shade for a period of 90 days before being transplanted to the field, with spacing of 1.0 x 1.0 m, with drip irrigation. The statistical design was randomized blocks with four replications, and doses of organic compost were: 0, 10, 20, 30, 40 and 50 t ha-1. We performed a harvest at 150 days after transplanting. We evaluated the plant growth parameters: height, stem diameter and crown diameter and variables as dry mass of useful aerial part, content, productivity and productivity of the components of essential oil. The essential oils were extracted by hydrodistillation and analyzed by chromatography gas coupled to mass spectrometer (Shimadzu, QP-5000). The identification of chemical constituents was performed by comparative analysis of mass spectra of substances with the database system CG-EM (Nist 62.lib), literature and retention rates. All results were submitted to analysis of variance, regression, and Tukey test for the effect of doses of organic compost. For the parameters height, stem diameter, crown diameter and dry mass of useful aerial part, the doses studied influenced the plants, which showed the best results at a dose 50 t ha-1, and this. For content and productivity of the essential oil, the doses studied influenced the plants, which in dose 30 t ha-1 obtained the best results. Productivity of components gama-muurolene, valencene, sigmacadinene and E-nerolidol the doses studied influenced the plants, which in dose 30 t ha-1 obtained the best results for all of them. If the goal in the cultivation of B. dracunculifolia is the component espatulenol dosages 30 and 40 t ha-1 obtained the best results. For the productivity... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Essencias e oleos essenciais, Plantas medicinais, Adubação orgânica, Alecrim-do-campo
Como citar
SANTOS, Rosângela Ferreira dos. Produção de fitomassa, teor e composição química do óleo essencial de Baccharis dracunculifolia DC. em função da adubação orgânica. 2011. xv, 67 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas de Botucatu, 2011.