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Registros recuperados: 16
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Biomasa y análisis bioquímico en teocintle perenne (Zea diploperennis Iltis, Doebley y Guzmán) en diferentes etapas fenológicas. Colegio de Postgraduados
Rojas Victoria, Néstor Jorge.
El teocintle perenne (Zea diploperennis) es endémico de la Sierra de Manantlán en el sur de Jalisco, se considera una especie con cierto valor forrajero en las regiones de origen y en regiones con escasas precipitaciones. Presenta una alta capacidad de adaptación a distintos ambientes y además se considera tolerante a siete de nueve enfermedades producidas por virus, hongos y bacterias (espiroplasmales) que atacan al maíz. El objetivo de la presente investigación fue evaluar la producción de biomasa, la dinámica de acumulación de azucares e identificación de proteínas en diferentes órganos de teocintle, en distintas etapas fenológicas. El estudio se realizó en los invernaderos del Colegio de Postgraduados, Montecillo, México. Se sembraron semillas de...
Palavras-chave: Zea diploperennis; Z. mays L.; Materia seca; Azúcares solubles; Proteínas solubles; Dry matter; Soluble sugars; Soluble proteins; Maestría; Botánica; Teocintle.
Ano: 2010 URL: http://hdl.handle.net/10521/174
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Biomasa y análisis bioquímico en teocintle perenne (Zea diploperennis Iltis, Doebley y Guzmán) en diferentes etapas fenológicas. Colegio de Postgraduados
Rojas Victoria, Néstor Jorge.
El teocintle perenne (Zea diploperennis) es endémico de la Sierra de Manantlán en el sur de Jalisco, se considera una especie con cierto valor forrajero en las regiones de origen y en regiones con escasas precipitaciones. Presenta una alta capacidad de adaptación a distintos ambientes y además se considera tolerante a siete de nueve enfermedades producidas por virus, hongos y bacterias (espiroplasmales) que atacan al maíz. El objetivo de la presente investigación fue evaluar la producción de biomasa, la dinámica de acumulación de azucares e identificación de proteínas en diferentes órganos de teocintle, en distintas etapas fenológicas. El estudio se realizó en los invernaderos del Colegio de Postgraduados, Montecillo, México. Se sembraron semillas de...
Palavras-chave: Zea diploperennis; Z. mays L.; Materia seca; Azúcares solubles; Proteínas solubles; Dry matter; Soluble sugars; Soluble proteins; Maestría; Botánica; Teocintle.
Ano: 2010 URL: http://hdl.handle.net/10521/174
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CARBOHYDRATES, PHENOLIC COMPOUNDS AND ANTIOXIDANT ACTIVITY IN PULP AND PEEL OF 15 BANANA CULTIVARS Rev. Bras. Frutic.
AQUINO,CÉSAR FERNANDES; SALOMÃO,LUIZ CARLOS CHAMHUM; RIBEIRO,SÔNIA MACHADO ROCHA; SIQUEIRA,DALMO LOPES DE; CECON,PAULO ROBERTO.
ABSTRACT The aim of this study was to quantify and compare the levels of carbohydrates and phenolic compounds and the antioxidant activity in the pulp and peel of 15 banana cultivars in two ripening stages. Four bunches per cultivar were harvested in the pre-climacteric stage, six fruits were used by sample unit. Fruits were analyzed in the pre-climacteric stage and after ripening. Total, reducing and non-reducing soluble sugars, starch, phenolic compounds and antioxidant activity were evaluated. Cultivar and ripening stage influenced all characteristics analyzed. Unripe pulp and peel had small percentage of sugar, but high percentage of starch, especially ‘Terrinha’ and ‘Marmelo’ cultivars. AAB and ABB cultivars presented the highest percentages of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Musa spp.; Soluble sugars; Starch; Free radical.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400901
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Carboidratos solúveis em detergente neutro em dietas de cabras leiteiras. Repositório Alice
BOMFIM, M. A. D..
Resumo: Três experimentos foram conduzidos para avaliar possíveis interações entre os perfis de carboidratos solúveis em detergente neutro e fontes de fibra para cabras leiteiras sob dietas contendo baixa concentração de fibra. No primeiro trabalho, foram utilizadas cinco cabras em delineamento em quadrado latino 5 x 5 para avaliar o efeito de cinco quocientes entre amido + açúcares solúveis em relação à fibra solúvel em detergente neutro (AmAs:FSDN), em base forrageira de feno de alfafa (Medicago sativa). Os tratamentos foram definidos pela razão entre AmAs:FSDN de 0,89; 1,05; 1,24; 1,73; e 2,92. Foram medidos o consumo, a digestibilidade, o balanço de nitrogênio, a produção e constituintes lácteos, além do comportamento ingestivo. A digestibilidade da...
Tipo: Tese/dissertação (ALICE) Palavras-chave: Caprino leiteiro; Carboidratos não fibrosos; CSDN; CNF; FSDN; NDFSC; CFC; NDSF; Soluble sugars; Nutrição Animal; Digestibilidade; Amido; Carboidrato; Fibra; Pectina; Açúcares; Dairy goats; Animal nutrition; Starch; Pectins.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/530210
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Desiccation tolerance in seeds of Annona emarginata (Schldtl.) H. Rainer and action of plant growth regulators on germination Braz. J. Plant Physiol.
Corsato,Jaqueline Malagutti; Ferreira,Gisela; Barbedo,Claudio Jose.
Annona emarginata (Schldtl.) H. Rainer ("araticum-de-terra-fria") is used as a rootstock for several species of Annonaceae. It is suggested that these seeds should be sown immediately after extraction and, therefore, they could be intolerant to desiccation. There are several mechanisms involved with desiccation tolerance. Soluble sugars, for example, can accumulate and act as osmoprotectants for the membrane system during desiccation. The aim of this study is to assess desiccation tolerance in A. emarginata seeds. In addition, we examined the soluble sugars involved in desiccation tolerance. Finally, we determined the effect of gibberellic acid (GA4+7) and N-(phenylmethyl)-aminopurine in promoting the germination of seeds with different water contents. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Araticum-de-terra-fria; Desiccation; Cytokinins; Gibberellins; Soluble sugars.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000400004
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Effect of thinning on flower and fruit and of edible coatings on postharvest quality of jaboticaba fruit stored at low temperature Ciênc. Tecnol. Aliment.
Nascimento,Talita Pimenta do; Bettiol Neto,José Emílio; Pereira,Renato Alves; Castro,Inar Alves de; Chagas,Edvan Alves; Lajolo,Franco Maria; Cordenunsi,Beatriz Rosana.
Jaboticaba is a Brazilian fruit, native to the Atlantic forest, which belongs to the Myrtaceae family. In this work we describe the effect of the thinning of "flower", "fruit" and "flower & fruit" compared to non-thinned fruit (control) and of edible coatings with respect on nutritional composition, overall acceptability and shelf-life of jaboticaba ‘Sabara’, grown in an irrigated commercial orchard. "Flower and fruit" thinning allows fruit with higher quality as diameter, volume and mass. Non-thinned fruit shows higher yield, however fruit have lower quality. As a result of the improving quality at harvest, the shelf life was twice (~8 days) for thinned fruit. The lack of change in concentration of soluble sugar and absence of formation of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Jaboticaba Sabará; Soluble sugars; Shelf life; Organic acids.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612013000300006
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Effect of water availability on physiological performance and lettuce crop yield (Lactuca sativa) Ciencia e Investigación Agraria
Molina-Montenegro,Marco A; Zurita-Silva,Andrés; Oses,Rómulo.
Water is essential for plants, affecting the majority of the physiological processes related to growth and productivity. Water shortage is one of the most common factors that limit crop productivity worldwide. Many cultivars have elevated water requirements, nevertheless in some countries due to global climate change effects, the availability of water for irrigation is becoming limited. In fact, current models of climate changes predict that central Chile will be a sensitive zone where precipitation will drastically decrease. In this study, the variation of gas exchange and production of fresh biomass in a lettuce cultivar, grown under different water availability regimes, was evaluated. Additionally, the concentration of total soluble sugar and water use...
Tipo: Journal article Palavras-chave: Soluble sugars; Water use efficiency; Water shortage; Lettuce; Photosynthetic rate.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100006
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La citocinina BAP en el metabolismo primario de hojas senescentes de trigo Colegio de Postgraduados
González Santos, Rosalinda.
La senescencia foliar es la última fase de desarrollo de las hojas, se caracteriza por una serie de cambios fisiológicos y bioquímicos. El principal propósito de éste proceso es la traslocación de nutrientes especialmente el nitrógeno. Las principales biomoléculas del metabolismo primario se degradan como: los pigmentos fotosintéticos, proteínas y enzimas fotosintéticas. Sin embargo, la aspersión externa de la citocinina BAP y la sobre-expresión de isopentenil fosfotransferasa en las hojas retrasa el catabólismo de estos compuestos y mantiene la actividad fotosintética. El objetivo del presente trabajo fue estudiar el efecto de la aplicación externa de la citocinina 6-bencilaminopurina (BAP) en el metabolismo primario, durante la senescencia natural de la...
Tipo: Tesis Palavras-chave: Azúcares solubles; Fosfoenolpiruvato carboxicinasa; Fosfoenolpiruvato carboxilasa; Triticum aestivum L; Maestría; Botánica; Soluble sugars; Phosphoenolpyruvate carboxykinase; Phosphoenolpyruvate carboxylase; Triticum aestivum L.
Ano: 2008 URL: http://hdl.handle.net/10521/1628
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Light environment influences the flood tolerance in Cordia americana (L.) Gottschling & J.S.Mill. Anais da ABC (AABC)
SAMOJEDEN,CAROLINE G.; ARTUSI,ÁGHATA C.; DELEVATTI,HELIUR A.A.; MILESI,SILVIA V.; CANSIAN,ROGÉRIO L.; KISSMANN,CAMILA; SAUSEN,TANISE L..
Abstract The subtropical riverine forests present a variation in soil water availability throughout the year, following precipitation seasonality. The objective of this work was to evaluate the responses of Cordia americana to different light intensities combined with soil flooding. Seedlings were acclimated to light treatments, with full sun and shade conditions. Sun and shade plants were subjected to soil flooding during periods of 10 (short) and 30 (longer) days. After 10 days, flooded plants had a higher root dry mass accumulation and soluble sugars content, regardless of the light condition. Shade plants presented higher shoot soluble sugars content in relation to the sun plants. After 30 days, a higher shoot soluble sugar content was observed in sun...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Subtropical climate; Soluble sugars; Understory; Water stress.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602945
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Mixed sugarcane and elephant grass silages with or without bacterial inoculant R. Bras. Zootec.
Cavali,Jucilene; Pereira,Odilon Gomes; Valadares Filho,Sebastião de Campos; Porto,Marlos Oliveira; Fernandes,Francisco Eden Paiva; Garcia,Rasmo.
The effects of different ratios of sugarcane and elephant grass (0:100, 25:75, 50:50, 75:25 and 100:0% of the natural basis) were assessed on the chemical composition and losses in silages treated with a bacterial inoculant, using laboratory silos. A 2 × 5 factorial arrangement (with and without inoculant and five elephant grass ratios) in a randomized blocks design with three replications was used. Interaction was observed in the sugarcane and elephant grass ratio × bacterial inoculant for crude protein (CP) and pH. The other variables were influenced only by the increasing proportions of elephant grass. The contents of dry matter, neutral detergent fiber corrected for ashes and protein, acid detergent fiber, insoluble protein in acid detergent fiber,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Effluent; Ethanol; Nutritional value; Organic acids; Soluble sugars.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300003
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Morphological and physiological alterations induced by lactofen in soybean leaves are reduced with nitric oxide Planta Daninha
Ferreira,L.C; Cataneo,A.C; Remaeh,L.M.R; Búfalo,J; Scavroni,J; Andréo-Souza,Y; Cechin,I; Soares,B.J.A.
Lactofen is a diphenylether herbicide recommended to control broad-leaved weeds in soybean (Glycine max) fields and its mechanism of action is the inhibition of protoporphyrinogen-IX oxidase (Protox), which acts in the chlorophyll biosynthesis. This inhibition results in an accumulation of protoporphyrin-IX, which leads to the production of reactive oxygen species (ROS) that cause oxidative stress. Consequently, spots, wrinkling and leaf burn may occur, resulting in a transitory crop growth interruption. However, nitric oxide (NO) acts as an antioxidant in direct ROS scavenging. Thus, the aim of this work was to verify, through phytometric and biochemical evaluations, the protective effect of NO in soybean plants treated with the herbicide lactofen....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Oxidative stress; Plant growth; Soluble sugars.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000400014
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Physiological and toxic effects of selenium on seed germination of cowpea seedlings Bragantia
Lapaz,Allan de Marcos; Santos,Luiz Felipe de Melo; Yoshida,Camila Hatsu Pereira; Heinrichs,Reges; Campos,Marcelo; Reis,André Rodrigues dos.
ABSTRACT Selenium (Se) is considered a beneficial chemical element for plants, but in high concentrations it may present symptoms of toxicity. The present study aimed to evaluate 11 concentrations of Se (0; 0.1; 0.5; 1; 5; 10; 20; 40; 80; 400; 800 mg.L-1) to determine the low and high (toxicity) critical levels to seed germination of cowpea (Vigna unguiculata). In addition, alterations in the rate of photosynthetic pigments, lipid peroxidation and sugars during the initial growth development of seedlings were analysed. Seeds exposed to 800 mg.L-1 of Se showed a decrease of 20% of seed germination index compared to the control treatment. The decrease in seedling growth reflected in the increase of total sugars and sucrose concentration in both the shoot and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soluble sugars; Oxidative metabolism; Phytotoxicity; Vigna unguiculata.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000400498
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Physiological changes during postharvest senescence of broccoli. Repositório Alice
FINGER, F.L.; ENDRES, L.; MOSQUIM, P.R.; PUIATTI, M..
The objective of this work was to determine the early physiological changes throughout shelf life fresh broccoli (Brassica oleracea L. var. italica) cv. Piracicaba Precoce at 25 graus C. and relative humidity of 96% in the dark until complete senescence. Head inflorescences showed lack of turgidity and commercial value when weight loss reached up to 5%, coinciding with 48 hour after harvest. Chlorophyll content was stable until 24 hours after harvesting; afterwards, an intense degradation phase took place. At 72 hours, total head yellowing was observed when chlorophyll content dropped to 30% of its initial content. Peroxidase activity increased by 1.4 fold during the first six hours, dropping to its lowest level approximately 24 hours after harvesting....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Chlorophyll; Peroxidase; Respiration; Starch; Soluble sugars; Clorofila; Respiracao; Amido; Acucares soluveis.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/100939
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Physiological changes during postharvest senescence of broccoli PAB
Finger,Fernando Luiz; Endres,Laurício; Mosquim,Paulo Roberto; Puiatti,Mário.
The objective of this work was to determine the early physiological changes throughout shelf life of fresh broccoli (Brassica oleracea L. var. italica) cv. Piracicaba Precoce at 25ºC and relative humidity of 96% in the dark until complete senescence. Head inflorescences showed lack of turgidity and commercial value when weight loss reached up to 5%, coinciding with 48 hour after harvest. Chlorophyll content was stable until 24 hours after harvesting; afterwards, an intense degradation phase took place. At 72 hours, total head yellowing was observed when chlorophyll content dropped to 30% of its initial content. Peroxidase activity increased by 1.4 fold during the first six hours, dropping to its lowest level approximately 24 hours after harvesting....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chlorophyll; Peroxidase; Respiration; Starch; Soluble sugars.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000900006
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Primary metabolism components of seeds from Brazilian Amazon tree species Braz. J. Plant Physiol.
Gonçalves,José Francisco de C.; Fernandes,Andreia V.; Oliveira,Antonio Fernando M.; Rodrigues,Lílian F.; Marenco,Ricardo A..
The contents of the main components of the primary metabolism (soluble sugars, starch, proteins, oils, fatty acids) and minerals (P, Ca, Mg, K, Fe, Zn, Mn, Cu) were characterized in seeds of five Brazilian Amazon tree species (Andira parviflora, Bertholletia excelsa, Helicostylis tomentosa, Hymenaea parviflora, and Parkia pendula). Soluble sugar contents were high in P. pendula seeds (14 %), whereas starch predominated in A. parviflora seeds (58.7 %). A. parviflora and H. parviflora seeds were rich in proteins (35.1 % and 32.4 %, respectively). The oil contents ranged from 1.4 % in A. parviflora to 70.7 % in B. excelsa. Only B. excelsa and P. pendula seeds may be considered oilseeds, with 70.7 % and 28.4 % oil, respectively. The fatty acid compositions...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fatty acids; Minerals; Oils; Proteins; Soluble sugars; Starch.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202002000200009
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Water deficit modifies the carbon isotopic composition of lipids, soluble sugars and leaves of Copaifera langsdorffii Desf. (Fabaceae) Acta Botanica
Bertholdi,Angelo Albano da Silva; Costa,Vladimir Eliodoro; Rodrigues,Angélica Lino; Almeida,Luiz Fernando Rolim de.
ABSTRACT Water deficit is most frequent in forest physiognomies subjected to climate change. As a consequence, several tree species alter tissue water potential, gas exchange and production of carbon compounds to overcome damage caused by water deficiency. The working hypothesis, that a reduction in gas exchange by plants experiencing water deficit will affect the composition of carbon compounds in soluble sugars, lipids and vegetative structures, was tested on Copaifera langsdorffii. Stomatal conductance, leaf water potential, and CO2 assimilation rate declined after a period of water deficit. After rehydration, leaf water potential and leaf gas exchange did not recover completely. Water deficit resulted in 13C enrichment in leaves, soluble sugars and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon assimilation; Carbon isotopic composition; Lipids; Soluble sugars; Water deficit.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000100080
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