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| Registros recuperados: 56 | |
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| Lopes, Adriano da Silva; Universidade Estadual de Mato Grosso do Sul; Hernandez, Fernando Braz Tangerino; Universidade Estadual de Mato Grosso do Sul; Alves Júnior, José; Universidade Federal de Goiás; Oliveira, Gabriel Queiroz de; Universidade Federal da Grande Dourados. |
| The incorporation of technologies has resulted in increased productivity and the more rational management of peach palm, with irrigation being an important tool for certain regions. Thus, studies leading to proper crop management are extremely important, such as the estimate of the effective depth of the root system, which is indispensable for proper irrigation management. The objective of this study was to evaluate the effects of different irrigation depths, as applied by drip irrigation, on the distribution of the root system of peach palm. This experiment was conducted in Ilha Solteira, São Paulo State, Brazil, with drip irrigation, with the two systems (flow of 0.0023 m3 h-1) consisting of four irrigation treatments corresponding to 0, 50, 100 and 150%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Engenharia Agrícola; Irrigação Bactris gasipaes; Roots; Localized irrigation; Irrigation management 5.03.02.01-9. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16281 |
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| Maranhão, Camila Maida de Albuquerque; UESB; Silva, Cristina Cavalcante Felix da; UESB; Bonomo, Paulo; UESB; Pires, Aureliano José Vieira; UESB. |
| O estudo foi conduzido com o objetivo de se avaliar a produção de matéria seca da parte aérea (PMSA) e da raiz (PMSR), a composição bromatológica, o teor de clorofila (valor SPAD), assim como se realizar uma análise de correlação entre o teor de clorofila (índice SPAD) e o teor de nitrogênio na planta e produção de matéria seca da parte aérea de duas cultivares de braquiária. O ensaio foi conduzido em esquema fatorial 4 x 2, sendo quatro doses de N (0, 75, 150 e 225 mg dm-3 de N) e duas cultivares de braquiária (Brachiaria brizantha cv. Marandu e Brachiaria decumbens cv. Basilisk) dispostos no delineamento em blocos casualizados com cinco repetições. A PMSA foi incrementada com o aumento das doses de N, enquanto que com a PMSR aconteceu o inverso,... |
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Palavras-chave: Brachiaria brizantha; Bachiaria decumbens; Clorofila; Raíz Brachiaria brizantha; Bachiaria decumbens; Chlorophyll; Roots. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4305 |
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| SANTOS,DANIEL M.C.; ESTRADA,GUSTAVO C.D.; FERNANDEZ,VIVIANE; ESTEVAM,MARCIEL R.M.; SOUZA,BRUNNA T. DE; SOARES,MÁRIO L.G.. |
| ABSTRACT Studies on belowground roots biomass have increasingly reported the importance of the contribution of this compartment in carbon stock maintenance in mangrove forests. To date, there are no estimates of this contribution in Brazilian mangrove forests, although the country has the second largest area of mangroves worldwide. For this study, trenches dug in fringing forests in Guaratiba State Biological Reserve (Rio de Janeiro, Brazil) were used to evaluate the contribution of the different classes of roots and the vertical stratification of carbon stock. The total carbon stock average in belowground roots biomass in these forests was 104.41 ± 20.73 tC.ha−1. From that, an average of 84.13 ± 21.34 tC.ha−1 corresponded to the carbon stock only in fine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Global climate change; Guaratiba State Biological Reserve; Roots; Sepetiba bay; Trench method. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401579 |
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| HERRIG,VANESSA; FERRARESE,MARIA DE LOURDES L.; SUZUKI,LETÍCIA S.; RODRIGUES,JOÃO DOMINGOS; FERRARESE-FILHO,OSVALDO. |
| The influence of the allelochemicals ferulic (FA) and vanillic (VA) acids on peroxidase (POD, EC 1.11.1.7) and phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) activities and their relationships with phenolic acid (PhAs) contents and root growth of soybean (Glycine max (L.) Merr.) were examined. Three-day-old seedlings were cultivated in nutrient solution containing FA or VA (0.1 to 1 mM) for 48 h. Both compounds (at 0.5 and 1 mM) decreased root length (RL), fresh weight (FW) and dry weight (DW) and increased PhAs contents. At 0.5 and 1 mM, FA increased soluble POD activity (18% and 47%, respectively) and cell wall (CW)-bound POD activity (61% and 34%), while VA increased soluble POD activity (33% and 17%) but did not affect CW-bound POD activity. At 1 mM, FA... |
| Tipo: Journal article |
Palavras-chave: Roots; Phenolic acids; Phenylalanine ammonia-lyase; Peroxidase; Soybean. |
| Ano: 2002 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000100009 |
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| RAMOS,LUIS CARLOS DA SILVA; CARVALHO,ALCIDES. |
| Roots and shoots from seedlings of 29 coffee genotypes were studied to better characterize the entries from the Coffea germplasm bank of the Instituto Agronômico (IAC), Campinas, State of São Paulo, Brasil. The varieties were seeded in a randomized complete block design with 6 replications and 10 plants per plot. The characters evaluated were: plant (PL), shoot (SL) and root (RL) length; total plant (PDM), shoot (SDM), root (RDM) and lateral root (LRDM) dry matter. A lateral root index (LRI) and shoot root dry matter (SRDM = SDM/RDM) and length ratios; (SRL = SL/RL) were calculated. The dwarf varieties (Catuaí, Icatu-caturra, Vila Sarchi, San Ramon, Vila Lobos, São Bernardo) presented higher LRDM and lower SDM than the normal size varieties such as Mundo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea; Coffee; Varieties; Seedlings; Shoots; Roots; Coffea. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051997000100006 |
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| Doblinski,Patrícia Minatovicz F.; Ferrarese,Maria de Lourdes L.; Huber,Domitila A.; Scapim,Carlos Alberto; Braccini,Alessandro de Lucca e; Ferrarese-Filho,Osvaldo. |
| The scope of the present study was to investigate how the p-coumaric (p-CA) and p-hydroxybenzoic (p-HD) acids affect the peroxidase (POD, EC 1.11.1.7) activity, the lipid peroxidation (LP) and the root growth of soybean (Glycine max (L.) Merr.). Three-day-old seedlings were cultivated in nutrient solution containing p-CA or p-HD (0.1 to 1 mM) for 48 h. After uptake, both compounds (at 0.5 and 1 mM) decreased root length (RL), fresh weight (FW) and dry weight (DW) while increased soluble POD activity, cell wall (CW)-bound POD activity (with 1 mM p-CA and 0.5 mM p-HD) and LP. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max (L.) Merr.; Roots; Phenolic acid. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200009 |
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| Callejas R,Rodrigo; Canales P,Pablo; García de Cortázar G. de C,Víctor. |
| With the purpose of characterizing the growth of the root system of table grapes (Vitis vinifera L.) cv. Thompson Seedless and its relationship with soil temperature, research was carried out during the 2004-2005 growing season in vineyards in the Copiapó and Huasco Valleys. Four plants were chosen and rhizotrons were used to measure the growth of the root system. Measurements were performed once a week from September 2004 to September 2005, estimating the intensity of root growth and its annual distribution in the ranges of 0 to 40, 40 to 80 and 80 to 120 cm of soil depth. Temperature sensors were installed in four plants at 25, 50, 75 and 100 cm of soil depth, and the temperature was registered every 1 h. The thermal diffusivity of the soil was... |
| Tipo: Journal article |
Palavras-chave: Roots; Thermal diffusivity; Tablegrape. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400003 |
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| LEE,Yun-Kyung; CHANG,Yoon Hyuk. |
| Abstract In this study, we examined the phytochemical properties and antioxidant activities of the methanol extracts of maca (Lepidium meyenii Walp.) leaves and roots. A total of 25 chemical compounds were identified by LC-Q-TOF and classified as saponins, phenols, flavonoids, steroids, alkybenzenes, and amines. Among all the chemical compounds identified, three saponins (tanshinone I, panaxytriol, and rotundifolioside), one phenol (gingerol), and one steroid (ergosterol peroxide) were found in the both leaf and root extracts. Levels of saponins, phenols, and flavonoids in the methanol extract from maca leaves were significantly higher than in the extract of roots. Antioxidant activities (1,1-diphenyl-2-picrylhydrazyl radical scavenging activity and ferric... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant activity; Leaves; Maca; Phytochemical properties; Roots. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000500278 |
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| Huerta Olague, José de Jesús. |
| Se avaluó el efecto de la cobertura vegetal y de las raíces, de maíz (Zea mays L.), frijol (Phaseolus vulgaris L.), calabacita (Cucurbita pepo L.) y avena (Avena sativa L.), sobre el escurrimiento superficial y la perdida del suelo. El trabajo se realizo en un campo experimental de la Universidad Autónoma Chapingo y se utilizaron 8 tratamientos, 2 para cada cultivo (4 fueros subparcelas con cobertura vegetal y 4 subparcelas sin cobertura y solo con raíces, mismas que resultaron de cortar al ras del suelo los cultivos estudiados. La cobertura vegetal se midió en porcentajes y el sistema radical en densidad longitudinal de raíces (DLR). Se aplicó lluvia simulada a los 15, 30, 50 y 65 días de desarrollo sobre lotes de escurrimiento de 1 metro cuadrado y 10%... |
| Tipo: Tesis |
Palavras-chave: Escurrimiento superficial; Pérdida de suelo; Cobertura vegetal; Raíces; Maestría; Hidrociencias; Surface runoff; Soil loss; Vegetative cover; Roots. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1271 |
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| Torres Guerrero, Carlos Alberto. |
| Los suelos de México han sido degradados en los últimos años en buena parte por la acción del hombre. Debido a las prácticas agronómicas empleadas en la mayor parte del país (labranza convencional, monocultivos y remoción de residuos vegetales de cosechas anteriores) los suelos con potencial agrícola se han visto disminuidos en su productividad. La Agricultura de Conservación (AC) ofrece un aprovechamiento sustentable del recurso suelo, asegurando su estabilidad y estructura, con el propósito de aumentar los rendimientos de los cultivos. El experimento que se reporta es de larga duración. Se inició en 1991 en el Batán Texcoco, Estado de México, en el Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) y consta de 32 parcelas con diferentes... |
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Palavras-chave: Labranza; Agricultura de conservación; Raíces; Agregación; Maestría; Edafología; Tillage; Conservation agriculture; Roots; Aggregation. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1755 |
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| Cuevas Cruz, Juan Carlos. |
| Se probó el enraizado de estacas, acodo aéreo e injerto para clonar genotipos de un huerto semillero de P. leiophylla, putativamente resistentes al ataque de Dendroctonus sp. y Toumeyella pinicola Ferris. y que además muestran las mejores características fenotipicas. Con el primer método se clonó a la progenie, mientras que los otros métodos se desarrollaron para clonar a los árboles madre. En el enraizado de estacas se evaluó el efecto del substrato, tipo de estaca y concentración de ácido indolbutírico (AIB). Se utilizaron dos tipos de substrato (100 % de agrolita vs. una mezcla de turba-agrolita-vermiculita 1:1:1), dos tipos de estaca (apicales vs. basales) y dos concentraciones de AIB (0 vs. 10, 000 ppm). En el acodo aéreo se evaluó el efecto de cuatro... |
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Palavras-chave: Enraizado de estacas; Acodo aéreo; Injerto; Auxina; Raíces; Rooting cuttings; Air layering; Graft; Auxin; Roots; Ciencias Forestales; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2347 |
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| Alves Júnior,José; Bandaranayake,Wije; Parsons,Larry R.; Evangelista,Adão W. P.. |
| The experiment was conducted in an orchard located in University of Florida (Citrus Research and Education Center), Lake Alfred, Polk County, Florida, USA. The objective of this study was to evaluate the effects of water stress in root distribution of 'Valencia' orange tree on 'Swingle' citrumelo rootstock. Three treatments were imposed on the trees: 1) normal irrigation with microsprinklers, 2) no irrigation in winter (November through mid-March) and 3) rainfall exclusion by placing a water repelling fabric (Tyvek) under the trees. Trees in treatments 1 and 2 received normal rainfall during the winter, but treatment 3 received no rain. Normal irrigation was resumed on all treatments in mid March. Soil was collected using root auger head (0.09 m diameter... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Irrigation; Orange; Roots. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600012 |
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| GONCALVES, S. L.; LYNCH, J. P.. |
| Especificando problemas de hoje e amanhã: justificativas para a seleção de plantas adaptadas a cenários restritivos. A arquitetura das raízes das plantas anuais: O sistema radicular das monocotiledôneas; As raízes seminais; As raízes nodais; O sistema radicular das dicotiledôneas; Estrutura primária da raízes. Traços de raízes importantes contra estresses Ambientais: A funcionalidade da arquitetura das raízes; A importância dos pelos radiculares; Características anatômicas: o significado da formação de aerênquimas. Obtenção de amostras de raízes: Métodos de campo; Métodos de casa de vegetação; A utilização de vasos; O uso de cilindros de plástico, tipo PVC (mesocosmos); Métodos de laboratório. Metodologia para a avaliação de arquitetura (determinação de... |
| Tipo: Livros |
Palavras-chave: Raiz; Sistema radicular; Anatomia vegetal; Absorção de Nutrientes; Roots; Soil-plant interactions; Root systems. |
| Ano: 2014 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/999754 |
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| Registros recuperados: 56 | |
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