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Registros recuperados: 10 | |
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MACIEL, D. A.; SILVA, V. A.; ALVES, H. M. R.; VOLPATO, M. M. L.; BARBOSA, J. P. R. A. de; SOUZA, V. C. O.; SANTOS, M. O.; SILVEIRA, H. R. DE O.; DANTAS, M. F.; FREITAS, A. F. de; SANTOS, J. O. DOS. |
Traditionally, water conditions of coffee areas are monitored by measuring the leaf water potential throughout a pressure pump. However, there is a demand for the development of technologies that can estimate large areas or regions. In this context, the objective of this study was to estimate the WW by surface reflectance values and vegetation indices obtained from the Landsat-8/OLI sensor in Minas Gerais-Brazil Several algorithms using OLI bands and vegetation indexes were evaluated and from the correlation analysis, a quadratic algorithm that uses the Normalized Difference Vegetation Index (NDVI) performed better, with a correlation coefficient (R2) of 0.82. Leave-One-Out Cross-Validation (LOOCV) was performed to validate the models and the best results... |
Tipo: Artigo de periódico |
Palavras-chave: Potencial Hídrico; Área Foliar; Produção Agrícola; Café; Leaf water potential; Plantations; Coffee beans; Remote sensing. |
Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1123511 |
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PANDELO, D.; MELO, T. D.; SINGULANI, J. L.; GUEDES, F. A. F.; MACHADO, M. A.; COELHO, C. M.; VICCINI, L. F.; SANTOS, M. O.. |
The aim of this work was to analyze terpene oil production and terpene synthases (TPS) gene expression from leaves at different developmental stages of different chemotypes of Lippia alba (Mill.) N.E. Br. ex Britton & P. Wilson, Verbenaceae. Hydro-distilled essential oil were used for chemical analysis and gene expression of three monoterpene synthase genes called LaTPS12, LaTPS23 and LaTPS25 were used for analyses of gene expression associated to oil production. The putative genes were associated to TPS-b gene class. Semi-quantitative PCR and quantitative PCR (qPCR) analysis were used to investigate the expression profile of those three putative genes in different leaf stages and different chemotypes. Additionally, total oil production and gene... |
Tipo: Artigo de periódico |
Palavras-chave: Essential oil; QPCR; Lippia Alba; Verbenaceae; Limonene; Linalool. |
Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/943140 |
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Registros recuperados: 10 | |
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