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Registros recuperados: 9
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Anatomia do caule de Lycopersicon Esculentum Mill., submetido a diferentes tratamentos com reguladores vegetais BABT
Martins,Maria Bernadete Gonçalves; Castro,Paulo Roberto de Camargo e.
The effects of plant growth regulators GA3 50 mg. L-1, NAA 100 mg. L-1, CCC 1500 mg.L-1 and SADH 3000 mg.L-1 on stem anatomy of Lycopersicon esculentum Mill cv. Ângela Gigante were studied. Two sets of experiments were carried out in greenhouse during two separte periods. Anatomical studies , revealed that growth promotors induced increased xylem thickness and increased the number of tracheary elements while the growth retardants decreased xylem thickness and induced fiber formation.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant growth regulators; Anatomy; Stem; Lycopersicon esculentum.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000200014
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Application of Artificial Neural Network (ANN) in predicting mechanical properties of canola stem under shear loading CIGR Journal
Azadbakht, Mohsen; Torshizi, Mohammad Vahedi; Ziaratban, Armin; Ghajarjazi, Ehsan.
In this study, at first the shear parameters including the maximum shear force, shear strength, shear energy and power consumption of canola stem were calculated through force-deformation curve; and then these mechanical properties were determined and predicted using artificial neural network.   For the tests, testing machine Instron (Model Santam STM-5) with 50 N load cell was used.  Stems were cut at 3 diameter levels (1 to 3, 3 to 5 and more than 5 mm), 3 cutting speed levels (75, 115 and 150 mm/min ), 3 cutting angles (0°, 30° and 60°) and three replicates.   Cutting parameters including maximum cutting force, shear strength; cutting energy; consumed power and cutting work were examined.  Tests lasted for each stem until the full cut.  Data...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Canola; Cutting energy; Stem; Shear strength; Power consumption; Artificial Neural Network (ANN).
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3785
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Caracterização do pasto e da extrusa de novilhas Girolanda, em pastagem de Brachiaria decumbens, submetidas a diferentes taxas de lotação - doi: 10.4025/actascianimsci.v33i2.9379 Animal Sciences
Silva, Andrezza Miguel da; UFRPE; Modesto, Elisa Cristina; UFRRJ; Lira, Carolina Câmara; UFRPE; Santos, Mércia Virginia Ferreira dos; UFRPE; Brasil, Lucia Helena de Albuquerque; UFRPE; Dubeux Júnior, José Carlos Batista; UFRPE.
O objetivo deste trabalho foi avaliar as características do pasto e da extrusa de novilhas Girolanda, submetidas a três taxas de lotação, em pastagem de capim Brachiaria decumbens Stapf., em diferentes períodos de avaliação. Foram utilizadas seis novilhas da raça Girolanda e os tratamentos foram constituídos por diferentes taxas de lotação (2, 4 e 6 UA); cada bloco foi formado por três piquetes. O delineamento foi de blocos ao acaso em parcelas subdivididas com medidas repetidas no tempo. A taxa de bocados dos animais variou com o período de avaliação, com valores de 41 bocados min.-1 (Período 1) e 33 bocados min. -1 (Período 3). A taxa de bocados reduziu ao longo dos períodos de pastejo com valores de 41 a 33 bocados min. -1 Já o tamanho do bocado...
Tipo: Pesquisa de campo;análise laboratorial Palavras-chave: Produção animal; Comportamento animal; Bocado; Colmo; Folha; Material senescente Comportamento animal Bite; Stem; Leaf; Senescent material.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/9379
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Determination of some constant parameters during cutting of canola stem CIGR Journal
Azadbakht, Mohsen; Torshizi, Mohammad Vahedi; Ghajarjazi, Ehsan; Ziaratban, Armin.
In this study, the canola stalk cutting parameters including modulus of mass density of stalk, special work of useful cutting, coefficient of cutting useful work and crush resistance coefficient were examined.  For the tests, testing machine Instron (Model Santam STM-5) with 50 N load cell was used.  Cutting was performed with a saw-serrated cutting blade that was attached to the Instron movable jaw.  Stems were cut at three diameter levels (1 to 3, 3 to 5 and more than 5 mm), three cutting speed levels (75, 115 and 150 mm/minute), three cutting angles (0°, 30° and 60°) and three replicates.  Cutting parameters including modulus of mass density of stalk, special work of useful cutting, coefficient of cutting useful work and crush resistance coefficient...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Canola; Cutting; Stem; Modulus; Special work; Coefficient; Useful work; Crush resistance.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3648
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Diversity of metaxylem vessel elements in three Syagrus palms (Arecaceae) of different habits Acta Botanica
Pace,Marcelo Rodrigo; Botânico,Marli Pereira; Angyalossy,Veronica.
Vessel elements in Monocotyledons present morphological differences according to the organ where they occur. Usually such diff erences have been explained from an evolutionary perspective, with few data on how the vessel elements could be infl uenced by the diff erent functions of organs and the growth habits of the plants. To address this question, three vegetative organs of palms of the same genus, Syagrus, growing in similar environments, but with different habits, were analyzed. Accordingly, we aimed to detect whether the vessel elements would present similar features in all species or whether the vessel elements would change according to their different habits. We found that the width and type of perforation plates varied in the same way among all...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Monocotyledons; Tracheary elements; Vegetative organs; Growth habit; Root; Stem; Leaf.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200007
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Morphology, Anatomy, Palynology and Seed Micromorphology of Turkish Endemic Verbascum exuberans Hub.-Mor. (Scrophulariaceae) Planta Daninha
AKTAS,K.; ÖZDEMIR,C.; ÖZDEMIR,B..
ABSTRACT: Verbascum L. is the largest genus of the family Scrophulariceae and includes several species are of medicinal importance. The high morphological diversity among the species of the genus Verbascum causes problems in the delimitation of the species. In this study, morphological, anatomical, palynological and seed properties of Verbascum exuberans were investigated. It is a local endemic restricted to the provinces of Manisa and Izmir in West Anatolia. In the root cross-section, the xylem elements occupy a considerable area. The upper part of the epidermis cells in the stem cross-section is covered a distinct cuticle layer. The main vein of the leaf is shapped as bicollateral bundle. Idioblasts were not observed in the epidermis of the leaves of V....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Leaf; Pollen; Root; Stem; Mullein.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100203
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Pasture height at the beginning of deferment as a determinant of signal grass structure and potential selectivity by cattle - doi: 10.4025/actascianimsci.v35i4.20421 Animal Sciences
Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlândia; Silveira, Márcia Cristina Teixeira; Empresa Brasileira de Pesquisa Agropecuária; Gomes, Virgílio Mesquita; Universidade Estadual de Montes Claros; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Sousa, Braulio Maia de Lana; Universidade Federal de Sergipe; Santos, Anselmo de Deus; Universidade Federal de Viçosa.
Current experiment identified the height of signal grass {Urochloa decumbens (Stapf) R. D. Webster cv. Basilisk [syn. Brachiaria decumbens Stapf cv. Basilisk]} at the beginning of deferment that provided an appropriate pasture structure and potential selectivity by cattle on deferred pastures. Four pasture heights at the beginning of deferment (10, 20, 30 and 40 cm) and two forage samples (available on pasture and simulated grazing) were studied. The experimental design was set in completely randomized blocks, with two replications, in a split-plot arrangement. Higher percentage of live leaf blades and lower percentage of live stems and senescent forage were recorded in the forage sample from simulated grazing. The increase in pasture height increased the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria decumbens; Stem; Leaf; Senescent forage; Grazing Brachiaria decumbens; Stem; Leaf; Senescent forage; Grazing.
Ano: 2013 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/20421
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Structural characterization of vegetative organs of the endangered Brazilian native species Hesperozygis ringens (Benth.) Epling Anais da ABC (AABC)
PINHEIRO,CARLOS G.; OLIVEIRA,JOÃO MARCELO S. DE; HEINZMANN,BERTA M..
Abstract The aim of this study was to describe the structural characterization of Hesperozygis ringens (Benth.) Epling vegetative organs. For this purpose, leaves, stems and roots of the endangered Lamiaceae were collected from a population located in Santo Antão, Santa Maria municipality, Rio Grande do Sul, Brazil. Results demonstrated that the H. ringens leaf blade presents glandular and non-glandular trichomes as well as two morphs of diallelocytic stomata, which are usually found above the epidermis level. The petiole is concave on ventral face and convex on its dorsal face, containing glandular and non-glandular trichomes as well as stomata in the epidermis. These types of trichomes were also detected in the stem. In addition, the presence of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lamiaceae; Leaf blade; Petiole; Root; Stem.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602887
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Vegetative propagation in Piperaceae species BABT
Souza,Luiz Antonio de; Moscheta,Ismar Sebastião; Mourão,Káthia Socorro Mathias; Albiero,Adriana Lenita Meyer; Iwazaki,Maísa de Carvalho; Oliveira,Jonathas Henrique Georg de; Rosa,Sônia Maciel da.
Piperaceae species of forest remnants of Maringá, Paraná, Brazil present vegetative propagation through root or stem (stolon). This reproduction type was verified in Piper amalago L., P. arboreum Aublet, P. xylosteoides (Kunth) Steud., Peperomia parnassifolia Miq. and Ottonia martiana Miq. Root and stem branches of these species were analyzed anatomically. Results indicated that the vegetative propagation in Piperaceae should be studied in other forests. New and additional studies should be made if the structural variations were induced environmentally or fixed genetically.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Piperaceae; Vegetative reproduction; Stolon; Stem; Root.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600006
Registros recuperados: 9
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