Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 152
Primeira ... 12345678 ... Última
Imagem não selecionada

Imprime registro no formato completo
Ação do enxofre em chuva ácida simulada sobre parâmetros morfofisiológicos de Phaseolus vulgaris L. (Fabaceae) - doi: 10.4025/actasciagron.v32i3.4273 Agronomy
Dias, Bruna Borba; Universidade Federal de Santa Catarina; Leite, Maysa de Lima; Universidade Estadual de Ponta Grossa, Paraná; Farago, Paulo Vitor; Universidade Estadual de Ponta Grossa, Paraná; Oliveira, André Vicente de; Universidade Estadual de Ponta Grossa, Paraná; Beruski, Gustavo Castilho; Universidade Estadual de Ponta Grossa, Paraná.
O presente trabalho teve o objetivo de analisar os efeitos do enxofre e da chuva ácida simulada sobre a estrutura foliar do feijoeiro (Phaseolus vulgaris L), nos aspectos morfoanatômicos, teores de clorofila a, b, total e feofitina. As plantas-controle sofreram simulações de chuva com pH 6,0 e as plantas-teste sofreram simulação de chuva ácida com pH 3,0. As concentrações de clorofila a, b e total diminuíram no estádio de floração (R6). Já, no estádio R7, onde surgem as primeiras vagens, os teores aumentaram, indicando possível resistência e/ou adaptação dos espécimes às simulações ácidas. O tratamento ácido afetou a concentração de clorofila que foi degradada por processos oxidativos sem a sua conversão em feofitina. Também se observou diminuição na...
Palavras-chave: 5.00.00.00-4; 5.01.03.06-7; Phaseolus vulgaris; Chuva ácida; Enxofre; Clorofila; Anexos epidérmicos Ciências Agrárias e Fisiologia de Plantas Cultivadas Phaseolus vulgaris; Acid rain; Sulfur; Chlorophyll; Epidermal annexes.
Ano: 2010 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4273
Imagem não selecionada

Imprime registro no formato completo
Adaptação do milho (Zea mays L.) a diferentes condições de encharcamento avaliado através da fluorescência da clorofila. Repositório Alice
DURAES, F. O. M.; MAGALHAES, P. C.; GAMA, E.E.G.e; OLIVEIRA, A. C. de; FERREIRA, C. da S..
2001
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Milho; Encharcamento; Fluorescencia; Clorofila; Zea mays; Maize; Waterllging; Chlorophyll; Fluorescence.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/485207
Imagem não selecionada

Imprime registro no formato completo
Alterations in biochemical components in mesta plants infected with yellow vein mosaic disease Braz. J. Plant Physiol.
Chatterjee,Arpita; Ghosh,Subrata K..
Yellow vein mosaic disease of mesta (kenaf, Hibiscus cannabinus L.; and roselle, H. sabdariffa L.) is a new entrant to the disease scenario and it is associated with a novel monopartite Begomovirus. Changes in different biochemical parameters in diseased mesta plants were observed as compared to healthy ones. Isozyme pattern and assays of different enzymes, namely catalase, acid phosphatase, peroxidase, esterase, polyphenol oxidase and superoxide dismutase, revealed lower activities of catalase, acid phosphatase and peroxidase enzymes and enhanced activities of esterase, polyphenol oxidase and superoxide dismutase in diseased plants as compared to healthy ones. Due to the infection, chlorophyll content, phenolics and total soluble protein decreased whereas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Begomovirus; Chlorophyll; Hibiscus; Isozyme pattern; Phenolics; Proline.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000400002
Imagem não selecionada

Imprime registro no formato completo
Apports de nutriments et développement phytoplanctonique en baie de Seine ArchiMer
Aminot, Alain; Guillaud, Jean-francois; Andrieux Loyer, Francoise; Kerouel, Roger; Cann, Philippe.
As part of the Programme National d'Oceanographie Cotiere, the nutrient dynamics of the Bay of Seine were studied between 1992 and 1994 in order to complement work on ecological modelling. Firstly, the River Seine's nutrient fluxes were established: 80 000-130 000 t a(-1) of dissolved inorganic nitrogen, 6 400-8 400 t a(-1) of dissolved phosphorus and 20 000-77 000 t a(-1) of dissolved silicium. Estuarine processes were taken into account. Consequences of nutrient loading for the bay were then evaluated at the pelagic level (nutrient and chlorophyll enrichments) and the benthic level (distribution of various phosphorus fractions in superficial sediments). The large continental inputs always induce concentration gradients in the water from the mouth of the...
Tipo: Text Palavras-chave: Baie de Seine; Rapport de consommation; Chlorophylle; Nutriment; Bay of Seine; Uptake ratio; Chlorophyll; Nutrient.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/publication-844.pdf
Imagem não selecionada

Imprime registro no formato completo
Aroma composition of Tempranillo grapes as affected by iron deficiency chlorosis and vine water status Scientia Agricola
Sánchez,Ramón; García,María-Rosa González; Vilanova,Mar; Rodríguez-Nogales,José-Manuel; Martín,Pedro.
ABSTRACT: Water deficit and iron nutritional deficiency (iron chlorosis) are frequent environmental stresses affecting grapevine production in the Mediterranean region. The objectives of this work were (i) to study the combined effects of both stresses on aromatic profile of Tempranillo grapes, occurring simultaneously in the vineyard, and (ii) to evaluate the viability of foliar chlorophyll content at veraison (Chl) to early assess aromatic quality potential of grapes in those conditions. Twenty non-irrigated vineyard subzones (10 m × 10 m each), affected and non-affected by iron chlorosis, were monitored in Ribera del Duero Appellation of Origin (North-Central Spain) during two consecutive seasons. Factorial ANOVA was performed to study the effects of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vitis vinifera L.; Chlorophyll; Quality; Volatile composition; Water deficit.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200601
Imagem não selecionada

Imprime registro no formato completo
Assessment of vegetational indices applied to sugarcane monitoring using Rapideye images. Repositório Alice
VICENTE, L. E.; LOEBMANN, D. G. dos S. W.; ZILLMANN, E.; GONZALEZ, A.; VICENTE, A. K.; OLIVEIRA, B. P. de; ARAUJO, L. S. de.
Rapideye sensor have been operating since 2009 and was one of the first multispectral (5 bands) sensors to operate as part of a satellite constellation (5 satellites), able to provide a massive stock of images with singular synoptic (~5 days) and spatial capabilities (5m). However, so far the Rapideye unique characteristic is still underused, precisely, its Red Edge band (690-730) and possible applications to agricultural mapping considering crop biophysical compounds. The Red Edge band is spectrally located between the Red band, where chlorophyll presence causes strong absorption of light, and the Near Infrared (NIR) band, which has a strong reflection associated with the leaf cell structure. In rder to explore the spectral characteristics of the Rapideye...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Rapideye; Spectral indices; Rapideye; Índíces espectrais; Sensoriamento remoto; Cana de açúcar; Mapeamento; Clorofila; Remote sensing; Sugarcane; Chlorophyll.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084598
Imagem não selecionada

Imprime registro no formato completo
Atividade enzimática em variedades de cana-de-açúcar cultivadas in vitro sob diferentes níveis de nitrogênio. Repositório Alice
DONATO, V.M.T.S.; ANDRADE, A.G. de; SOUZA, E.S. de; FRANÇA, J.G.E.; MACIEL, G.A..
O nitrogênio é considerado o elemento mineral mais abundante nas plantas, sendo componente essencial de biomoléculas e inúmeras enzimas. O objetivo deste trabalho foi avaliar a eficiência no processo de assimilação do nitrogênio e encontrar parâmetros indicativos do potencial de fixação biológica em variedades de cana-de-açúcar (Saccharum officinarum) cultivadas in vitro. Foram utilizadas as variedades de cana-de-açúcar RB 842021, RB 83102, RB 75126, RB 882980 e Co 997, além da Brachiaria arrecta (testemunha), cultivadas in vitro em diferentes níveis de nitrogênio [M1 (9,83 mM), M2 (2,46 mM), M3 (0,49 mM), M4 (0,0 mM)]. Todas as variedades e a cultura testemunha (Brachiaria arrecta) apresentaram atividade da nitrato redutase (NR) constitutiva e também da...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Saccharum; Glutamina sintetase; Redutase do nitrato; Clorofila; Nitrate reductase; Chlorophyll.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/113112
Imagem não selecionada

Imprime registro no formato completo
Basil conservation affected by cropping season, harvest time and storage period. Repositório Alice
SILVA, F. da; SANTOS, R.H.S.; ANDRADE, N.J. de; BARBOSA, L.C.A.; CASALI, V.W.D.; LIMA, R.R. de; PASSARINHO, R.V. de M..
Fresh basil (Ocimum basilicum L.) is used in food, phytotherapic industry, and in traditional therapeutic, due to its essential oil content and composition. Nevertheless basil can not be kept for long periods after harvest and its quality can be reduced. This work aimed to assess the influence of the season and harvest time in the postharvest conservation of basil stored for different periods. Basil was harvested at 8 am and 4 pm both in August/1999 and January/2000. Cuttings were conditioned in PVC packages and stored for 3, 6, and 9 days. During storage, chlorophyll content, essential oil content and composition were determined as well as microbiological analyses were carried out. Harvest season and the days of storage influenced the final content of...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ocimum basilicum; Linalool; Chlorophyll; Mold; Yeast; Eugenol; Linalol; Clorofila; Fungos; Bactérias.
Ano: 2005 URL: http://www.alice.cnptia.embrapa.br/handle/doc/113955
Imagem não selecionada

Imprime registro no formato completo
Basil conservation affected by cropping season, harvest time and storage period PAB
Silva,Franceli da; Santos,Ricardo Henrique Silva; Andrade,Nélio José de; Barbosa,Luiz Cláudio Almeida; Casali,Vicente Wagner Dias; Lima,Renato Ribeiro de; Passarinho,Ricardo Vaz de Melo.
Fresh basil (Ocimum basilicum L.) is used in food, phytotherapic industry, and in traditional therapeutic, due to its essential oil content and composition. Nevertheless basil can not be kept for long periods after harvest and its quality can be reduced. This work aimed to assess the influence of the season and harvest time in the postharvest conservation of basil stored for different periods. Basil was harvested at 8 am and 4 pm both in August/1999 and January/2000. Cuttings were conditioned in PVC packages and stored for 3, 6, and 9 days. During storage, chlorophyll content, essential oil content and composition were determined as well as microbiological analyses were carried out. Harvest season and the days of storage influenced the final content of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ocimum basilicum; Eugenol; Linalool; Chlorophyll; Mold; Yeast.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000400002
Imagem não selecionada

Imprime registro no formato completo
Bioactive compounds during the maturation of four fruits native to the restinga forest of Ceará. Repositório Alice
GONÇALVES, N. P.; LUCENA, E. M. P. de; BONILLA, O. H.; SILVEIRA, M. R. S. da; TAVARES, F. J. C..
bitstream/item/190233/1/ART18085.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Flavonoides amarelos; Ácido ascórbico; Carotenoides; Antocianinas; Clorofila; Ascorbic acid; Chlorophyll; Carotenoids; Anthocyanins.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103163
Imagem não selecionada

Imprime registro no formato completo
BIOACTIVE COMPOUNDS DURING THE MATURATION OF FOUR FRUITS NATIVE TO THE RESTINGA FOREST OF CEARA Rev. Bras. Frutic.
GONÇALVES,NIGÉRIA PEREIRA; LUCENA,ELISEU MARLÔNIO PEREIRA DE; BONILLA,ORIEL HERRERA; SILVEIRA,MÁRCIA RÉGIA SOUZA DA; TAVARES,FRANCISCA JÉSSICA COSTA.
ABSTRACT Fruits provide not only essential nutrients for food, but also bioactive compounds that promote health benefits and help reducing the risk of developing non-communicable chronic diseases. In this sense, this work aimed at quantifying bioactive compounds during the maturation of four fruits native to the Restinga forest of Ceara. Myrtle fruits (Eugenia punicifolia (Kunth) DC.) were collected at the Botanical State Park of Ceara, Caucaia-CE, and guajiru (Chrisobalanus icaco L.), manipuça (Mouriri cearensis Huber) and murici-pitanga fruits (Byrsonima gardneriana A. Juss.) at the Botanical Garden of São Gonçalo, São Gonçalo do Amarante-CE. Fruits were collected at different stages (E) and transported to the Laboratory of Plant Ecophysiology, being...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascorbic acid; Chlorophyll; Carotenoids; Anthocyanins; Yellow flavonoids.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000500303
Imagem não selecionada

Imprime registro no formato completo
Bio-Argo quality control manual for the Chlorophyll-A concentration ArchiMer
Schmechtig, Catherine; Claustre, Herve; Poteau, Antoine; D'Ortenzio, Fabrizio.
This document is the bio-Argo quality control manual for Chlorophyll A concentration. It describes the method used in real-time to apply quality control flags to Chlorophyll A concentration calculated from specific sensors mounted on Argo profiling floats.
Tipo: Text Palavras-chave: Argo; Physical oceanography; In-situ marine data; Profiling floats; Chlorophyll; Operational oceanography; Biogeochemistry.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00243/35385/60181.pdf
Imagem não selecionada

Imprime registro no formato completo
Cadmium toxicity affects chlorophyll a and b content, antioxidant enzyme activities and mineral nutrient accumulation in strawberry Biol. Res.
Muradoglu,Ferhad; Gundogdu,Muttalip; Ercisli,Sezai; Encu,Tarik; Balta,Fikri; Jaafar,Hawa ZE; Zia-Ul-Haq,Muhammad.
BACKGROUND: Cadmium (Cd) is well known as one of the most toxic metals affecting the environment and can severely restrict plant growth and development. In this study, Cd toxicities were studied in strawberry cv. Camarosa using pot experiment. Chlorophyll and malondialdehyde (MDA) contents, catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX) activities and mineral nutrient concentrations were investigated in both roots and leaves of strawberry plant after exposure Cd. RESULTS: Cd content in both roots and leaves was increased with the application of increasing concentrations of Cd. We found higher Cd concentration in roots rather than in leaves. Chlorophyll a and b was decreased in leaves but MDA significantly increased under increased...
Tipo: Journal article Palavras-chave: Antioxidant enzymes; Cadmium; Chlorophyll; Heavy metal stress; Strawberry.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100011
Imagem não selecionada

Imprime registro no formato completo
Characterization of ‘Sabará’ Jabuticabas at different maturation stages Agronomy
Becker, Fernanda Salamoni; Vilas Boas, Ana Carolina; Sales, Adones; Tavares, Lucas Silveira; Siqueira, Heloisa Helena de; Vilas Boas, Eduardo Valério de Barros.
This work aimed to evaluate the physicochemical characteristics and enzymatic activity of “Sabará” jabuticaba fruits, which were cultivated in Lavras, Minas Gerais State, Brazil, at different maturation stages. The fruits were harvested and separated into five different stages: totally green fruit, fruit with incipient pigmentation, fruit with a light purple predominance, totally purple fruit and totally dark purple fruit. These fruits were physicochemically analyzed and evaluated for polygalacturonase enzymatic activity. Chlorophyll degradation and the synthesis of anthocyanin on fruit rinds were observed, as well as the degradation of the cell wall and its consequent softening. In the pulp, increased soluble solids, pH and sugars were observed, while...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 50700006 CIÊNCIA E TECNOLOGIA DE ALIMENTOS 50701045 FISIOLOGIA PÓS-COLHEITA Myrciaria jaboticaba; Pectin; Polygalacturonase; Chlorophyll; Anthocyanin. FISIOLOGIA PÓS-COLHEITA.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19499
Imagem não selecionada

Imprime registro no formato completo
Chlorophyll fluorescence parameters as indicators of submergence tolerance in rice International Rice Research Institute
Sarkar, R. K.; Panda, D.; Rao, D. N..
p.66-68
Palavras-chave: Chlorophyll; Fluorescence; Submergence; Tolerance; Red light; Photosystem II; Photosynthesis; Electron transfer; Cultivars.
Ano: 2004 URL: http://hdl.handle.net/123456789/862
Imagem não selecionada

Imprime registro no formato completo
Chlorophyll index for real-time prediction of nutritional status of 'Prata' banana AGRIAMBI
Arantes,Alessandro de M.; Donato,Sérgio L. R.; Siqueira,Dalmo L. de; Amorim,Edson P.; Rodrigues Filho,Vagner A..
ABSTRACT This study aimed to select regression equations based on the correlation between chlorophyll index and leaf nutrient contents, for real-time prediction of the nutritional status of 'Prata' banana. Six cultivars of 'Prata' banana were used as treatments, with five replicates and four plants per plot, arranged in a completely randomized design. Nutrient levels were evaluated based on laboratorial analysis and chlorophyll indices using a portable chlorophyll meter, in the third leaf from the apex to the base. Data were subjected to analysis of variance, calculating the correlations between leaf nutrient contents and chlorophyll indices, and the regression equations were adjusted to the associations that were significant and with greater magnitude....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Musa spp.; Cultivars; Nutrients; Chlorophyll.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000200099
Imagem não selecionada

Imprime registro no formato completo
Chlorophyll profiles and the water column structure in the Gulf of California ArchiMer
Hidalgo-gonzalez, Raquel M; Alvarez-borrego, Saul.
Remote sensors provide information on the photosynthetic pigment concentration for the upper 22% of the euphotic zone. To model primary production in the water column from satellite-derived photosynthetic pigments, estimates of the vertical distribution of pigment concentration are required. A Gaussian distribution function is used to represent the pigment vertical profile with four parameters. We used 268 chlorophyll concentration profiles from 1973 through 1993, to estimate these parameters. Cluster analysis of surface temperature was used to define the cool season as the period end of November-end of June, and the rest of the year is considered the warm season. Cluster analysis of surface temperature acid chlorophyll data grouped the stations into four...
Tipo: Text Palavras-chave: Chlorophylle; Profil vertical; Golfe de Californie; Télédétection; Couche mélangée; Chlorophyll; Vertical profiles; Gulf of California; Remote sensing; Mixed layer.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/00322/43367/42848.pdf
Imagem não selecionada

Imprime registro no formato completo
Clorosis en hojas y tallo de Alstroemeria sp. en postcosecha. Colegio de Postgraduados
Rodríguez López, Carmen.
La presente investigación se llevó a cabo en condiciones de invernadero del Campus Montecillo, con rizomas de Alstroemeria cv. “Olga”, bajo sistema hidropónico, con la solución universal de Steiner hasta la cosecha. Consistió en dos etapas: fase de invernadero y vida de florero. En fase de invernadero se aplicaron tratamientos mediante fertilización foliar al cultivo bajo un diseño experimental completamente al azar con cinco repeticiones. Se evaluaron nueve dosis de fertilización obtenidas de un estudio previo. Las fuentes de fertilizantes utilizadas fueron: Ca(NO3)2, MgSO4- y FeEDTA. Las variables evaluadas fueron: clorofila, longitud de hoja, diámetro del tallo, número de hojas por tallo y longitud de tallos. La investigación en la fase de vida de...
Palavras-chave: Alstroemeria sp.; Clorofila; Fertilización foliar; Vida de florero; Chlorophyll; Foliar fertilization; Vase life; Edafología; Maestría.
Ano: 2014 URL: http://hdl.handle.net/10521/2389
Imagem não selecionada

Imprime registro no formato completo
Combined effects of water status and iron deficiency chlorosis on grape composition in non-irrigated vineyards Scientia Agricola
González,María-Rosa; Hailemichael,Girma; Catalina,Álvaro; Martín,Pedro.
ABSTRACT: Although water deficit and iron deficiency chlorosis are common environmental stresses in the Mediterranean area, few data are reported in the literature on their effects on vineyards, when acting simultaneously. The main objective of this research was to study the combined effects of iron deficiency and water status on vigor, yield and fruit composition in rainfed vineyards. Moreover, the investigation aimed to evaluate the feasibility of using foliar chlorophyll content (Chl) and predawn leaf water potential (LWP), measured at veraison, to assess potential quality of grapes in the framework of precision viticulture. For this, 24 non-irrigated ‘Tempranillo’ vineyard subzones were monitored in Ribera del Duero (North-Central Spain) during three...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vitis vinifera L.; Chlorophyll; Drought; Leaf area index; Stress.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600473
Imagem não selecionada

Imprime registro no formato completo
Comparative performance of leaf color chart with other nitrogen scheduling practices International Rice Research Institute
Sheoran, P.; Singh, K. P.; Malik, R. K.; Kumar, M..
p.60-61
Palavras-chave: Nitrogen; Fertilizers; Application rates; Nitrogen content; Leaves; Colour; Charts; Chlorophyll.
Ano: 2004 URL: http://hdl.handle.net/123456789/808
Registros recuperados: 152
Primeira ... 12345678 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional