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Biblioteca(s):  Embrapa Pecuária Sudeste.
Data corrente:  06/07/2021
Data da última atualização:  28/09/2021
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  MACHADO, R. C.; SILVA, A. B. S. da; ANDRADE, D. F. de; PINHEIRO, F. C.; WILLIAMS, C. B.; DONATI, G. L.; NOGUEIRA, A. R. de A.; PEREIRA FILHO, E. R.
Afiliação:  RAQUEL CARDOSO MACHADO, UFSCAR; ANA BEATRIZ SANTOS DA SILVA, UFSCAR; DANIEL FERNANDES DE ANDRADE, UFSCAR; FERNANDA COSTA PINHEIRO, UFSCAR; CHARLES B. WILLIAMS, Davidson College; GEORGE LUIS DONATI, Wake Forest University; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; EDENIR RODRIGUES PEREIRA FILHO, UFSCAR.
Título:  Alternative approaches applied to inductively coupled plasma techniques: multi-flow and two-flow calibration.
Ano de publicação:  2021
Fonte/Imprenta:  Journal of the Brazilian Chemical Society, v.32, n.4, 2021.
Páginas:  p.842-851.
ISSN:  0103-5053
DOI:  https://dx.doi.org/10.21577/0103-5053.20200235
Idioma:  Inglês
Conteúdo:  Multi-flow calibration (MFC) is based on monitoring the analytical signal from a single calibration standard solution at several different nebulization gas flow rates (Q), which normalizes plasma conditions and minimizes matrix effects. In the present study, MFC was evaluated, for the first time, applied to inductively coupled plasma optical emission spectrometry (ICP OES) and inductively coupled plasma mass spectrometry (ICP-MS) to analyze different and complexmatrix samples. Al, As, Cd, Cr, Cu, Mn, Pb, and Zn were determined by ICP OES, while As, Cd, Co, Cu, Hg, Mo, Mn, Ni, Se, Sb, Pb, and V were determined by ICP-MS. MFC results were compared with those obtained using external standard calibration (EC) for both techniques and in all cases, MFC showed equal or superior accuracy (recoveries between 80-120%) compared to EC, and lower relative standard deviation (RSDs < 10%). Several tests were also performed using only two nebulization gas flows to build linear models for calibration (called two-flow calibration, TFC) and the accurate results (recoveries ranged from 80 to 110% for ICP OES and from 81 to 102% for ICP-MS) suggests that this strategy can be also applied, resulting in a method with high sample throughput.
Palavras-Chave:  Calibration strategy; ICP OES; ICP-MS; Matrix effects; Nebulization gas.
Categoria do assunto:  W Química e Física
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/224314/1/Alternative-Approaches-Applied.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Pecuária Sudeste (CPPSE)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CPPSE25354 - 1UPCAP - DDPROCI-2021.00085MAC2021.00093
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Biblioteca(s):  Embrapa Arroz e Feijão.
Data corrente:  09/11/2020
Data da última atualização:  29/11/2021
Tipo da produção científica:  Artigo em Periódico Indexado
Circulação/Nível:  A - 1
Autoria:  LANNA, A. C.; COELHO, G. R. C.; MOREIRA, A. S.; TERRA, T. G. R.; BRONDANI, C.; SARAIVA, G. R.; LEMOS, F. da S.; GUIMARÃES, P. H. R.; MORAIS JÚNIOR, O. P.; VIANELLO, R. P.
Afiliação:  ANNA CRISTINA LANNA, CNPAF; GESIMARIA RIBEIRO COSTA COELHO, CNPAF; ALECIO SOUZA MOREIRA, CNPMF; THIAGO GLEDSON RIOS TERRA, UNIVERSIDADE FEDERAL DO TOCANTINS; CLAUDIO BRONDANI, CNPAF; GABRIEL RIOS SARAIBA, UNI-ANHANGUERA; FREDERICO DA SILVA LEMOS, UNI-ANHANGUERA; PEDRO HENRIQUE RAMOS GUIMARAES, UFG; ODILON PEIXOTO MORAIS JUNIOR, UFG; ROSANA PEREIRA VIANELLO, CNPAF.
Título:  Upland rice: phenotypic diversity for drought tolerance.
Ano de publicação:  2021
Fonte/Imprenta:  Scientia Agricola, v. 78, n. 5, e20190338, 2021.
ISSN:  1678-992X
DOI:  http://doi.org/10.1590/1678-992X-2019-0338
Idioma:  Inglês
Conteúdo:  Upland rice is cultivated mostly in Latin America and Africa by small farmers and in areas with risk of dry spells. This study evaluated morphophysiological mechanisms of upland rice associated to drought adaptation. A set of 25 upland rice genotypes were grown in a plant phenotyping platform during 2015 and 2017 under regular irrigation and water restriction. We evaluated morphophysiological traits in shoots (vegetative structures growth, gas exchange, water use efficiency, carboxylation efficiency, water status) and roots (length, surface area, volume and diameter), as well as agronomic traits (grain yield and its components). There was a reduction in grain yield by up to 54 % and 58 % in 2015 and 2017, respectively, under water deficit. Five upland rice genotypes with the best yield performances in both water treatments applied were recommended to the upland rice-breeding program: Bico Ganga, BRS Esmeralda, BRSMG Curinga, Guarani, and Rabo de Burro. In this study, morphophysiological traits associated to drought tolerance concerned the plant high capacity to save water in the leaves, low leaf water potential, high ability to reduce vegetative structures, high water use efficiency, high photosynthetic capacity, and improved capacity to absorb water from drying soil, either by osmotic adjustment or additional investment into the root system. Therefore, we concluded that different secondary traits contributed to drought tolerance and should be evaluated along with grain yiel... Mostrar Tudo
Palavras-Chave:  Water status.
Thesagro:  Arroz; Oryza Sativa; Resistência a Seca; Seleção Fenótipa.
Thesaurus NAL:  Gas exchange; Grain yield; Rice; Root systems; Vegetative growth.
Categoria do assunto:  F Plantas e Produtos de Origem Vegetal
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/217576/1/SciAgric-2021.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Arroz e Feijão (CNPAF)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPAF35950 - 1UPCAP - DD20212021
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