|
|
|
| Registros recuperados: 91 | |
|
|
| Santos, Luciana Carvalho; UESB; Bonomo, Paulo; UESB; Silva, Verusca Bulhões; UESB; Patês, Neusete Maria da Silva; UESB; Silva, Cristina Cavalcante Félix da; Secretaria de Estado da Agricultura e do Desenvolvimento Agrário; Pires, Aureliano José Vieira; UESB. |
| As características morfogênicas da Brachiaria brizantha e Brachiaria decumbens foram estudadas em função de diferentes adubações. O estudo foi conduzido em casa-de-vegetação e foram avaliadas duas cultivares de Braquiária (B. Brizantha cv. Marandu e B. decumbens cv. Basilisk) e cinco diferentes adubações (sem adubo, P, N, NP e NK). O ensaio foi conduzido em esquema fatorial 2 x 5, em delineamento inteiramente ao acaso, com quatro repetições. As avaliações morfogênicas englobaram as taxas de aparecimento foliar, alongamento foliar e filocrono. Foi bastante expressiva a resposta das cultivares quanto às variáveis estudadas em relação ao suprimento de nitrogênio, porém não houve resposta para fósforo e potássio. O capim-Basilisk se mostrou mais produtivo que... |
|
Palavras-chave: 5.01.00.00-9 Agronomia adubo; Brachiaria brizantha; Brachiaria decumbens; Folhas; Perfilho fertilizer; Brachiaria brizantha; Brachiaria decumbens; Leaves; Tiller. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7032 |
| |
|
|
| Abbade, Leticia Caravita; UFLA; Paiva, Patrícia Duarte de Oliveira; UFLA; Paiva, Renato; UFLA; Castro, Evaristo Mauro de; UFLA; Centofante, Agda Rabelo; UFLA; Oliveira, Cynthia de; UFLA. |
| Este estudo teve como objetivo comparar a estrutura interna de folhas de ipê-branco cultivadas in vitro e ex vitro. Para as avaliações anatômicas foram utilizadas folhas do primeiro nó de ramos, da base para o ápice, com 30 dias de cultivo in vitro e de plantas de campo. O estudo anatômico foi feito por meio das secções transversais e paradérmicas das folhas. As folhas apresentam epiderme uniestratificada e mesofilo dorsiventral. São hipostomáticas e apresentam tricomas em todas as faces. Folhas de plantas cultivadas ex vitro, quando comparadas com in vitro, tiveram espessura do limbo foliar, nervura central da epiderme adaxial e abaxial e os parênquimas paliçádico e esponjoso maiores. Em folhas oriundas do cultivo in vitro, a cutícula e o esclerênquima... |
|
Palavras-chave: 2.00.00.00-6 Ciências Biológicas anatomia; Folhas; Estômatos; Nervura central; In vitro; Ex vitro Anatomia vegetal anatomy; Leaves; Stomata; Central nervure; In vitro; Ex vitro. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1937 |
| |
|
|
| Daloso, Danilo de Menezes; UFV; Holsback-Menegucci, Zildamara dos Reis; UFMS; Santiago, Etenaldo Felipe; UFMS. |
| Neste estudo, analisaram-se os efeitos da radiação UV-C sobre o desenvolvimento de folhas de Rapanea ferruginea. Plantas jovens foram selecionadas com seis meses de idade identificando-se as folhas já diferenciadas do 3º, 4º, 6º, 8º e 9º nó. Posteriormente, as plantas foram divididas em três grupos e submetidas à radiação UV-C por 30, 60 ou 120 min. seguidos. Para o estudo anatômico, foram utilizadas técnicas usuais de corte e coloração. As análises morfométricas foram realizadas determinando-se três pontos ao longo da nervura central da folha, medindo-se das bordas esquerda (E) e direita (D) até cada um desses pontos. Determinaram-se também os desvios de simetria, o comprimento e a largura máxima do limbo, submetendo os valores à Anova e ao teste de Tukey... |
|
Palavras-chave: 2.00.00.00-6 Ciências Biológicas estresse; Radiação ultravioleta; Folhas; Desvio de simetria; Escalas de observação Botânica stress; Ultraviolet radiation; Leaves; Symmetry deviation; Scales of observation. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/861 |
| |
|
| |
|
|
| MORAES,LILIA A.S.; FACANALI,ROSELAINE; MARQUES,MARCIA ORTIZ M.; LIN,CHAU MING; MEIRELES,M. ANGELA A.. |
| Ocimum selloi Benth, a native plant of Brazil, has medicinal uses as anti-diarrheic, antispasmodic and anti-inflammatory product. The yield of essential oils of the inflorescences, containing flowers and seeds, was 0.6%, and the yield of leaves, collected in two different seasons, was 0.25% (June 2000) and 0.20% (January 2001), respectively. The essential oils of the inflorescences and leaves presented as major constituents trans-anethol (41.34%, 45.42%, 58.59%) and methyl chavicol (27.10%, 24.14%, 29.96%). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Medicinal plants; Ocimum selloi; Essential oil; Leaves; Inflorescence. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000100014 |
| |
|
|
| FUEYO,GEORGINA M. DEL; GNAEDINGER,SILVIA C.; DIAZ,MAITEN A. LAFUENTE; CARRIZO,MARTÍN A.. |
| Abstract Abstract: Anatomically preserved conifer-like leaves from the Middle Jurassic La Matilde Formation at the Barda Blanca locality in the Gran Bajo de San Julián area, southern Patagonia are described here. Leaves are assigned to conifers based on the following foliar features: thick-walled epidermal cells, a sclerenchymatic hypodermis, resin canals and transfusion tracheids associated with the vascular bundle. General mesophyll anatomy and inferred foliar morphology suggest a similarity to large, broad, linear-lanceolate, multi-veined conifer-like leaves. The general foliar habit indicates an affinity with the large, multi-veined leaves of the Araucariaceae; especially with those exhibited by the species of the Araucaria sections, Araucaria and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conifers; Jurassic; La Matilde Formation; Leaves; Patagonia; Permineralized. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400510 |
| |
|
|
| ZENI,ANA LÚCIA B.; MOREIRA,TATIANNE D.; DALMAGRO,ANA PAULA; CAMARGO,ANDERSON; BINI,LARISSA A.; SIMIONATTO,EDÉSIO L.; SCHARF,DILAMARA R.. |
| ABSTRACT Morus nigra L. (Moraceae) is a tree known as black mulberry and the leaves are used in folk medicine in the treatment of diabetes, high cholesterol and menopause symptoms. The aim of this study was to evaluate the M. nigra leaves phytochemical profile in different extractions and the hypolipidemic effect of the infusion comparing to the fenofibrate. Morus nigra infusion (MN) showed higher amounts of phenolics and flavonoids (83.85 mg/g and 79.96 µg/g, respectively), as well as antioxidant activity (83.85%) than decoction or hydromethanolic extracts. Although, decoction showed the best result for ascorbic acid (4.35 mg/100 g) than hydromethanolic or infusion (2.51 or 2.13 mg/100 g, respectively). The phenolic acids gallic, chlorogenic and caffeic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Morus nigra; Leaves; Phenolics; Triton WR-1339. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602805 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Frizzo,Caren D.; Santos,Ana C.; Paroul,Natalia; Serafini,Luciana A.; Dellacassa,Eduardo; Lorenzo,Daniel; Moyna,Patrick. |
| The essential oils of two varieties of Camphor tree (Cinnamomum camphora Nees & Eberm, Lauraceae), known as Hon-Sho and Ho-Sho cultivated in experimental stands in Southern Brazil were studied. The essential oils were obtained from the leaves and twigs of young plants by hydrodistillation. The identification of the components was performed using GC, GC/MS and retention indexes on methyl silicone and carbowax phases. The main components identified were linalool in the Ho-Sho and camphor in the Hon-Sho. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cinnamomum camphora; Leaves; Essential oils; GC/MS; Linalool; Camphor. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000300011 |
| |
|
|
| Blonski,Maria Sélia; Appoloni,Carlos Roberto; Parreira,Paulo Sérgio; Aragão,Pedro Henrique Arruda; Nascimento Filho,Virgilio Franco. |
| Energy Dispersion X-Ray Fluorescence Technique (EDXRF) was employed to study the effects of the fumagina disease on the elementary chemical composition of the leaves. The experimental set up consisted of a Mo X-ray tube (Ksub<FONT FACE=Symbol>µ</FONT> = 17.44 keV) with Zr filter and a Si (Li) detector. The measurements were performed with the infected and healthy leaves of citric plants. The elements Ti, Mn, Fe, Cu and Zn were quantified, with an average DL of 69, 12, 8, 4 and 4 µg.g-1 respectively. The obtained concentration for Fe varied from 44 to 192 µg.g-1 in healthy leaves and from 363 to 704 µg.g-1 in infected leaves with fumagina . |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fumagina; Leaves; Fluorescence of X-rays. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000500013 |
| |
|
| |
|
|
| Avilés,Fabiola; Ríos,Darcy; González,Ricardo; Sánchez-Olate,Manuel. |
| To define preliminary aspects of walnut (Juglans regia L.) callogenesis in indirect propagation systems, this work analyzed callogenic induction in adult leaves of walnut in broadleaf trees (BTM), Murashige and Skoog (MS) Driver Kuniyuki Walnut (DKW) and Woody Plant (WPM) media. Leaf segments of 1 cm², previously sterilized, were placed in each culture medium, supplemented with 21.4 µM naphtalene acetic acid (NAA) and 8.8 µM 6-benzylaminopurine (BAP). A completely random design was used; the experimental unit was a Petri dish with six callus explants. Each treatment was composed of seven Petri dishes. Callogenesis (%), nodular calli (%) and histology of calli explants were evaluated at 4 weeks by staining 10 µm slices with safranine-fastgreen. There were... |
| Tipo: Journal article |
Palavras-chave: Auxins; Citoquinines; Walnut; Callus; Leaves. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300020 |
| |
|
| |
|
|
| 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 |
| |
|
|
| Salata,Cristiane da Cunha; Leonel,Magali; Trombini,Fernanda Rossi Moretti; Mischan,Martha Maria. |
| A cassava-based puffed snack was produced using a single screw extruder to determine the effect of the raw material composition (cassava leaf flour and moisture) and the process parameters (extrusion temperature and screw speed) on the physical characteristics of an extruded-expanded snack. A central composite rotational design, including four factors with 30 treatments, was used with the following as dependent variables: expansion index, specific volume, water solubility index, water absorption index, color (L*, a*, b*), and hardness. Under conditions of low moisture content (12 to 14%), low percentage of cassava leaf flour (2 to 4%), and intermediate conditions of extrusion temperature (100°C) and screw speed (230rpm), it was possible to obtain puffed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaves; Cassava; Puffed snacks. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000300010 |
| |
|
|
| Trombini,Fernanda Rossi Moretti; Mischan,Martha Maria; Leonel,Magali. |
| ABSTRACT: The current research aimed to evaluate the effects of extrusion parameters on the physical characteristics of extruded blends of cassava leaf flour and starch. A factorial central composite design with four independent variables and the response surface methodology were used to evaluate the results of color parameters (L*, a*, b*), water absorption index, water solubility index and paste properties, according to the variations in the leaf flour percentage (1.5 to 7.5%), extrusion temperature (60 to 100ºC), screw speed (175 to 231rpm) and moisture (20 to 30%). Extrusion conditions affect color, water absorption and water solubility indexes and paste properties of blends. The intermediate tested conditions of variable parameters lead to obtain... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaves; Starch; Color; Water absorption; Viscosity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300573 |
| |
|
|
| Marin Patoni, Azucena. |
| El reconocimiento de objetos dentro de imágenes se encuentra bien documentado en cuanto a la detección de rostros se refiere, de ahí que lo observamos en varios dispositivos como son camaras fotograficas, celulares e incluso televisiones inteligentes, pero hablando del reconocimiento de algun otro objeto ya sea fruta, plantas, animales entre otros; la situacion cambia drásticamente. La información relacionada con la detección e identificación de plantas se encuentra en pleno desarrollo, por grupos de universidades, museos e instituciones; bajo proyectos cerrados al publico en general. Aunque permiten el envio de imágenes, para alimentar una base de datos, mediante la digitalizacion y captura de informacion, el acceso a su metodologia y procesos utilizados... |
|
Palavras-chave: Reconocimiento; Objetos; Aplicación; Iphone; Hojas; Recognition; Objects; Implementation; Leaves; Economía; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2316 |
| |
| Registros recuperados: 91 | |
|
|
|
