Consulta: subjectFacets:"Hormones"
Registros recuperados: 40
Data/hora: 06/06/2024 05:22:28

Caracterización de las condiciones para la micropropagación de Polianthes tuberosa L. a partir de cormo, hoja, flor y yema.
Provedor de dados: 32
Autores: Hernández Mendoza, Fanny.
Debido a las tecnologías con que se cuenta en la actualidad es relativamente fácil incrementar la biodiversidad y se considera que dos grupos de técnicas son indispensables para aumentar la variabilidad genética de los cultivos. Las técnicas empleadas para la inducción de mutaciones son las herramientas útiles para incrementar la variabilidad genética y las técnicas de cultivo in vitro permiten la multiplicación rápida de los fenotipos seleccionados. El nardo (Polianthes tuberosa L.) es una planta endémica de México, la importancia de este cultivo radica en que es utilizada como flor de corte así como en la industria farmacéutica y del perfume. Es peculiar que presenta poca variabilidad genética, porque es propagada vegetativamente. En este estudio se...
Palavras-chave: Propagación; Regeneración de plantas; Medio de cultivo; Hormonas; Eficiencia de la regeneración; Contaminación; Regeneration of plantlets; Culture media; Hormones; Contamination; Genética; Maestría; Regeneration efficiency.
Ano: 2013
URL: http://hdl.handle.net/10521/2108

Caracterización de las condiciones para la micropropagación de Polianthes tuberosa L. a partir de cormo, hoja, flor y yema.
Provedor de dados: 32
Autores: Hernández Mendoza, Fanny.
Debido a las tecnologías con que se cuenta en la actualidad es relativamente fácil incrementar la biodiversidad y se considera que dos grupos de técnicas son indispensables para aumentar la variabilidad genética de los cultivos. Las técnicas empleadas para la inducción de mutaciones son las herramientas útiles para incrementar la variabilidad genética y las técnicas de cultivo in vitro permiten la multiplicación rápida de los fenotipos seleccionados. El nardo (Polianthes tuberosa L.) es una planta endémica de México, la importancia de este cultivo radica en que es utilizada como flor de corte así como en la industria farmacéutica y del perfume. Es peculiar que presenta poca variabilidad genética, porque es propagada vegetativamente. En este estudio se...
Palavras-chave: Propagación; Regeneración de plantas; Medio de cultivo; Hormonas; Eficiencia de la regeneración; Contaminación; Regeneration of plantlets; Culture media; Hormones; Regeneration efficiency; Contamination; Genética; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2331

Hormônios no diagnóstico de problemas reprodutivos.
Provedor de dados: 14
Autores: ELOY, A. M. X.
O proposito deste trabalho e fornecer maiores esclarecimentos sobre o aspecto pratico das analises hormonais em medicina veterinaria.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Hormônio animal; Reprodução animal; Endocrinologia; Caprino; Ovino.; Hormones; Endocrinology; Reproduction; Goats.; Sheep.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514290

Protocolos Embrapa para superovulação de cabras e ovelhas.
Provedor de dados: 14
Autores: FONSECA, J. F. da; OLIVEIRA, M. E. F.
bitstream/item/221393/1/CNPC-2020-Art.55.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: SOV; Superovulated females; FSH; Caprino; Ovino; Superovulação; Reprodução Animal; Ciclo Estral; Hormônio; Goats; Sheep; Small ruminants; Superovulation; Hormones.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1128193

Uso da hCG na indução hormonal da ovulação em cabras.
Provedor de dados: 14
Autores: GONZALEZ, C. I. M.; MACHADO, R.; SIMPLÍCIO, A. A.; CUNHA, M. das G. G.
bitstream/item/26817/1/COT-25.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Brasil; Nordeste; Northeast.; Caprino; Ovulação; Cabra; Indução; Hormônio animal; Goats; Ovulation; Hormones; Brazil.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514953

Indução de raízes laterais em pivotante de muda "palito" de seringueira pelo 2,4-D associado ao Thiabendazol.
Provedor de dados: 14
Autores: MORAES, V. H. F.
Considerando a conveniencia de indicar sucedaneos de mais facil aquisicao e tambem de custo mais baixo do que AIB, foi realizado um ensaio no qual foi testada a hipotese de que 2,4-D estimularia a formacao de raizes laterais e deixaria de ser letal se fosse inibida a producao de etileno no tecido da planta, em resposta a essa auxina, pela adicao deThiabendazol. Com tres semanas apos o plantio, nos dois tratamentos de 2,4-D sem Thiabendazol, houve morte total das plantas, nao tendo havido diferenca entre taxas de pegamento das mudas tratadas com 2,4-D + Thiabendazol e dos outros tratamentos. Caso seja confirmada a ausencia de risco de danos a seringueira com o emprego de 2,4-D associado ao Thiabendazol na inducao de raizes laterais, alem de pronta...
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Toco alto; Brasil; Amazonas; Rubber tree; Species; Cuttings.; Enraizamento; Espécie; Hormônio; Hevea; Indução; Seringueira.; Raiz; Hormones; Roots; Stumps.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665322

Enraizamento de híbridos interespecíficos de maracujá utilizando regulador de crescimento AIB (ácido indol-butírico) (2009).
Provedor de dados: 14
Autores: LIMA, C. A. de; JUNQUEIRA, N. T. V.; PEIXOTO, J. R.; SOUZA, L. S.; BELLON, G.; JUNQUEIRA, K. P.; SANTOS, E. C. dos; CASTELO BRANCO, M. T.
bitstream/item/78162/1/p2009-050.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Maracujá.; Passiflora; Hormones; Passion fruits; Rooting; Varieties.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/737111

Purification de peptides apparentes a la calcitonine de saumon chez les crustaces. Resultats preliminaires
Provedor de dados: 5
Autores: Vanwormhoudt, A.
In crustacean, immunoreactive peptides were detected with salmon-calcitonin antibodies by immunocytochemistry in its eyestalks and by radioimmunoassay in the haemolymph and the digestive tract. Two different molecules were purified: the first with their molecular weight comprised between 3-5 kDa, the second having a molecular weight of 22 kDa which could correspond to a precursor of the first one. Their characterization is on progress.
Tipo: Text
Palavras-chave: Crustacea; Biochemistry; Cytochemistry; Hormones.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/acte-1385.pdf

Donnees cytologiques, electrophysiologiques et biochimiques relatives au phenomene de fecondation chez le homard (Homarus gammarus ). Implication du processus d'activation sur le mecanisme d'attache des oeufs pondus
Provedor de dados: 5
Autores: Goudeau, M; Lachaise, F; Kubisz, P; Goudeau, H.
Electrophysiological measurements and related cytological controls were done on immature and submature oocytes of Homarus gammarus . By chromatography (HPLC) and radio-immunoassays (RIA) it was established that submature oocytes displayed different ecdysteroids. Furthermore, the structure of the stalk (funiculus) for the laid eggs attachment was analyzed. it consisted of the two superimposed vitelline envelopes which were likely modified by the cortical reaction exudate during the fertilization process. In addition, the successive secretory phases, regarding to the embryonic envelopes were evidenced. Finally, the ecdysteroid titers of embryonic stages were measured.
Tipo: Text
Palavras-chave: Homarus gammarus; Malacostraca; Biological attachment; Hormones; Electrophysiology; Biochemistry; Cytology; Eggs; Embryonic development; Cell membranes; Oocytes; Fecundity; Homard; Decapode; Crustacé; Funicule; Mues embryonnaires; Enveloppe de fécondation; Ecdystéroîdes; Potentiel membranaire; Ovocyte.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1190.pdf

Localisation immunohisto chimique de peptides apparentes aux hormones de vertebres chez Pecten maximus
Provedor de dados: 5
Autores: Donval, A.
Substances related to vertebrate peptidic hormones have been searched by immunohistochemical methods in Pecten maximus . Neurosecretory cells have been detected in the nervous ganglia with antisera raised against vertebrate hormones, gastrin/CCK like, glucagon like, insuline like, somatostatine like. Other gastro-intestinal hormones like are localized in some cells of the gut epithelium: bombesine and vasoactive intestinal peptide.
Tipo: Text
Palavras-chave: Pecten maximus; Bivalvia; Immunology; Histochemistry; Cells; Neurosecretory system; Juveniles; Hormones.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-1724.pdf

Quelques aspects de la regulation du systeme neuroendocrine produisant la CHH et de la relation entre le rythme circadien et la glycemie
Provedor de dados: 5
Autores: Kallen, J.
In crayfish, the hemolymph glucose level shows an endogenous circadian rhythmicity which is expressed by a nocturnal glucose rise. This study shows that injections of serotonin and dopamine result in hyperglycemia and that injections of met-enkephalin decrease hemolymph glucose level as well as the nocturnal circadian glucose peak. Using immunocytochemistry, these neurotransmitters have been located in the eyestalk and their relationship with the CHH cell system is described.
Tipo: Text
Palavras-chave: Orconectes limosus; Astacus leptodactylus; Malacostraca; Cytochemistry; Hormones; Neurotransmitters; Circadian rhythms; Glucose.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/acte-1383.pdf

What hormones may regulate food intake in fish ?
Provedor de dados: 5
Autores: Le Bail, Pierre-yves; Boeuf, Gilles.
This is an overview of the hormones which may be involved in food intake control in fish, and some hypothetical pathways of their action are given based on mammalian knowledge. Most of the observed effects of these hormones may result from four types of mechanisms, each hormone acting by one or several as follows: (1) hormones could have a direct effect on central nervous system centres, associated with food intake behaviour or via vagal afferent neurons; (2) an indirect effect may occur via the gut which slows gastrointestinal transit, thus resulting in stomach distention which activates vagal afferent neurons; (3) they could have an indirect effect, acting directly on intermediary metabolism via glucose, flee fatty acids or amino acids mobilization or...
Tipo: Text
Palavras-chave: Prise alimentaire; Hormones; Food intake; Hormones.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00188/29881/28356.pdf

Snook (Centropomidae) and grouper (Serranidae) mariculture in the Gulf of Mexico and Caribbean Basin
Provedor de dados: 5
Autores: Roberts Jr, D.
Centropomidae and Serranidae, sometimes collectively misnamed "sea basses", are suitable for aquaculture in pens, ponds, and raceways around the tropical and subtropical latitudes of the world. Western Atlantic Ocean species were recently considered for farming. South Florida, Mexico, Central and South America and the Antilles areas of the Caribbean Basin have extensive areas suitable for farming groupers and snook. Principal species of interest are the common snook (Centropomus undecimalis ), the fat snook (C. parallelus ), the Nassau grouper (Epinephelus striatus ), Black seabass (Centropristis striatus ), Gag (Mycteroperca microlepis ), and jewfish (E. itajara ).
Tipo: Text
Palavras-chave: Epinephelus itajara; Epinephelus striatus; Centropomus undecimalis; Pisces; Brood stocks; Culture tanks; Larval development; Fingerlings; Hormones; Induced breeding; Spawning; Tropical fish.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1477.pdf

La neuroendocrinologie des crustaces: Evaluation des progres obtenus ces dernieres annees
Provedor de dados: 5
Autores: Vanherp, F.
Particular attention is given to the crustacean hyperglycemic hormone (CHH), to the gonad inhibiting (GIH) and stimulating hormone (GSH), to the moult inhibiting hormone (MIH) and to the peptidergic factors related to some hormones from vertebrates and insects. The interactions of these factors as well as the coordination with biogenic amines and steroids in the control of the metabolism, reproduction and moulting are postulated.
Tipo: Text
Palavras-chave: Crustacea; Sexual reproduction; Moulting; Hormones; Endocrinology; Eyestalks.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/acte-1381.pdf

Regulation of the Bone Healing Process by Hormones
Provedor de dados: 77
Autores: Issa,Joáo Paulo Mardegan; Tiossi,Rodrigo; Mello,Amaro Sergio da Silva; Iyomasa,Mamie Mizusaki.
The skeleton has several important functions, such as structural functions that provide mobility, support, and protection for the body. It also has an important function as a reservoir for calcium and phosphorus. The aim of this article is to show the principal hormones that are involved with the bone healing process. In this article, it will be pointed the mineral homeostatic mechanisms in the skeleton, controlled by the calcium-regulating hormones: parathyroid hormone (PTH) that maintains the normal extracellular calcium levels by enhancing osteoclastic bone resorption and liberating calcium from the adult skeleton; estrogen, considering that both osteoblasts and osteoclasts express estrogen receptors, it is reasonable to assume that the effects of...
Tipo: Journal article
Palavras-chave: Bone; Repair; Hormones.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000200025

Histological Evaluation of the Induced Endometriosis in Rats, after Treatment with Dexamethasone
Provedor de dados: 77
Autores: Batista,Ana Paula Castor; Conceição,Ana Paula Maria da; Moraes,Eleonora de Figueiredo; Teixeira,Álvaro Aguiar Coelho; Wanderley Teixeira,Valéria.
The present research had the purpose to analyze morphologically the sites of endometrial implants on the external area of the musculature of the anterior abdominal wall of female rats, treated with dexamethasone. For so, these 15 albino female rats were used (Rattus norvegicus albinus), of the lineage Wistar with 90 days of age, that were submitted to the induction of the endometriosis, and divided in the following groups: Group I ­ induced female rats to endometriosis and evaluated after 21 days (control); Group II ­ induced female rats to endometriosis and after 21 days, treated with dexamethasone for 10 days; Group III - induced female rats to endometriosis, and after 21 days, treated with dexamethasone for 15 days. The dexamethasone was administered in...
Tipo: Journal article
Palavras-chave: Endometriosis; Dexamethasone; Steriods; Hormones; Metaplasia.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000500008

Inmunohistochemical Evaluation of Estrogen Receptors Alpha and Beta in Normal Inferior Turbinate Mucosa
Provedor de dados: 77
Autores: Millas,Ieda; Liquidato,Bianca Maria; Dolci,José Eduardo Lutaif; Macéa,José Rafael; Fregnani,José Humberto Tavares Guerreiro; Meceles,Lenira Rocha.
It has been postulated that the nasal mucosa, like other human tissues, is affected by a complex interactive network of neuropeptides, cytokines, allergic and inflammatory mediators and hormones such as estrogen, in which associations between symptoms (e.g. nasal stuffiness and coryza) and hormonal variations deriving from pregnancy, use of hormonal contraceptives and menstrual cycle phases are observed. The objective is evaluating the presence of specific estrogen receptors (types alpha and beta) in inferior turbinate mucosa in healthy subjects without nasal symptoms. Samples of nasal inferior turbinate were removed from patients undergoing aesthetic nasal surgery, and analyzed using hematoxylin-eosin staining, followed by immunohistochemical preparations...
Tipo: Journal article
Palavras-chave: Rhinitis; Estrogen receptors; Estrogens; Nasal mucosa; Hormones; Immunohistochemistry.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100020

Moulting-hormone activity in adult &lt;i&gt;Artemia&lt;/i&gt;
Provedor de dados: 27
Autores: Van Beek, E.; Criel, G.R.J.; Walgraeve, H.; De Loof, A.
The &lt;i&gt;Artemia&lt;/i&gt; strain from Great Salt Lake (GSL 375) was used. Total body extracts and hemolymph of &lt;i&gt;Artemia&lt;/i&gt; were purified by solvent partition and column chromatography. Moulting-hormone concentrations were then determined by a specific radioimmunoassay (RIA). Results are expressed in ng ecdysteroid activity/g fresh weight (or per ml). Initially, the RIA data on extracts of adults were highly variable. The use of a more accurate sampling technique based on the reproductive cycle of the females allowed to determine a hormone activity pattern.In females, moulting cycles alternate with vitellogenic cycles. The lowest values of ecdysone (3-6 ng ecdysone equivalents/g fresh body weight or ml hemolymph) occur during...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hormones; Moulting; Artemia.
Ano: 1987
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3209

Performance and hormonal profile in broiler chickens fed with different energy levels during post restriction period
Provedor de dados: 86
Autores: Giachetto,Poliana Fernanda; Guerreiro,Erika Nomura; Ferro,Jesus Aparecido; Ferro,Maria Inês Tiraboschi; Furlan,Renato Luis; Macari,Marcos.
The aim of this work was to investigate the influence of diet energy level on performance and hormonal profiles of broilers during post restriction period. It was a split-plot experiment, and the main treatments were in a 2x2 factorial scheme. Birds were fed restricted to 30% of the ad libitum intake, from 7 to 14 days of age. After the restriction period, birds were fed ad libitum with diets containing low (2,900 kcal ME/kg) or high (3,200 kcal ME/kg) energy until 49 days of age. Broilers fed with high energy ration showed lower feed intake and better feed conversion and decreased carcass protein; however, abdominal fat pad, and total carcass fat were not affected by ration energy levels or feeding program. Neither diet energy level nor feed restriction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass composition; Weight gain; Hormones; Feeding level.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000600005

European Preferences for Beef Steak Attributes
Provedor de dados: 31
Autores: Tonsor,   Glynn T.; Schroeder,   Ted C.; Fox,   John A.; Biere,   Arlo W.
A choice experiment is used to evaluate how consumers in London, Frankfurt, and Paris value beef steaks with attributes such as: "hormone-free," "GM-free," farm-specific source verification, and domestic origin. The effect of various consumer characteristics on steak selection is also evaluated. Results suggest that European consumers are significantly heterogeneous in their preferences for beef steak attributes. French and German consumers have a higher willingness to pay to avoid genetically modified feed use than British consumers, while German and British consumers would pay more for growth hormone-free beef. French and German consumers are willing to pay for farm-specific source verification.
Tipo: Journal Article
Palavras-chave: Beef; Choice experiment; Country of origin; Genetically modified; Hormones; Preference heterogeneity; Random parameters; Source verification; Consumer/Household Economics.
Ano: 2005
URL: http://purl.umn.edu/31213

Effect of Egg Weight on External and Internal Qualities, Physiological and Hatching Success of Japanese Quail Eggs (Coturnix coturnix japonica)
Provedor de dados: 89
Autores: Hegab,IM; Hanafy,AM.
ABSTRACT This experiment was conducted to evaluate the effect of egg weight and egg physical characteristics on embryonic development, hatchability, and hatchling weight of Japanese quails (Coturnix coturnix japonica). In total, 689 eggs were classified in two categories: small (&lt;13.5 g) or large (≥13.5 g), and different external eggshell and internal quality traits were measured. On days 6 and 14 of incubation, tissue triiodothyronine (T3) and thyroxine (T4) were extracted from embryos in both egg sizes and analyzed. Relative to internal egg-quality traits, large eggs had significantly higher yolk height, yolk diameter, yolk weight, albumen height, and albumen weight than small eggs (p≤0.01). However, Haugh unit score (p=0.27) was not significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg size; Egg quality; Hatchability; Hormones; Parameters.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300300

Regulation of in vitro somatic embryogenesis with emphasis on to the role of endogenous hormones
Provedor de dados: 93
Autores: JIMÉNEZ,VÍCTOR M.
Different aspects of the in vitro somatic embryogenesis regulation are reviewed in this paper.work. A description of g General aspects, such as terminology, uses, stages of development and factors associated with the somatic embryogenesis, are described. is carried out. Although a brief description ofn the effects of the addition of different plant growth regulators to the culture medium wasis given, the article is centereds itself on the effect that the endogenous hormone concentrations in the initial explants and in the tissue cultures derived from them could play oin the induction and expression of somatic embryogenesis. It is significant that few to emphasize the low amount of systematic studies have been conducted, in this subject, in which different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro morphogenesis; Embryo regeneration; Embryogenic competence; Plant growth regulators; Hormones.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000200008

Blood parameters of Angus and Nellore young bulls fed diets with or without forage.
Provedor de dados: 96
Autores: Rennó,Luciana Navajas; Gomes,Rafael Aparecido; Martins,Taiane da Silva; Busato,Karina Costa; Ladeira,Marcio Machado; Oliveira,Maria Helena de; Silva Júnior,Jarbas Miguel da; Chizzotti,Mario Luiz.
ABSTRACT We evaluated blood parameters of Angus and Nellore bulls fed diets with and without forage. Forty animals with initial body weight (BW) of 380±16.2 kg were housed in individual stalls. Eight bulls of each breed were fed a whole shelled corn (WSC) diet [850 g kg−1 of WCS and 150 g kg−1 of a pellet based on soybean meal, dry mater (DM) basis] or a ground corn with silage (GC) diet (300 g kg−1 of silage and 700 g kg−1 of a concentrate based on corn and soybean meal, DM basis), ad libitum, and four animals of each breed were limited-fed the GC diet [feed restriction (FR), 55% of the DM intake of bulls fed ad libitum, adjusted for the metabolic BW]. Intake was measured daily, and a metabolism trial was conducted with total collection of feces and urine...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Blood metabolites; Bos taurus indicus; Bos taurus taurus; Feed restriction; Hormones.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100712

Reduced arbuscular mycorrhizal colonization in tomato ethylene mutants
Provedor de dados: 63
Autores: Zsögön,Agustin; Lambais,Marcio Rodrigues; Benedito,Vagner Augusto; Figueira,Antonio Vargas de Oliveira; Peres,Lázaro Eustáquio Pereira.
Plant hormones are likely key regulators of arbuscular mycorrhizae (AM) development. However, their roles in AM are not well known. Here mutants in five hormone classes introgressed in a single tomato (Lycopersicon esculentum Mill. Syn Solanum lycopersicum L.) background (cv. Micro-Tom) were used to determine their effects on AM development and the expression of defense-related genes (chitinases and b-1,3-glucanases) in roots. Under low P conditions, mutant epinastic (epi) and Never ripe (Nr), ethylene overproducer and low sensitivity, respectively, had the intraradical colonization by Glomus clarum highly inhibited, as compared to the control Micro-Tom (MT). No significant alterations in fungal colonization were observed in mutants affecting other hormone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lycopersicon; Micro-Tom; Defense-related genes; Hormones; Phosphate.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000300006

Plant biostimulants: physiological responses induced by protein hydrolyzed-based products and humic substances in plant metabolism
Provedor de dados: 63
Autores: Nardi,Serenella; Pizzeghello,Diego; Schiavon,Michela; Ertani,Andrea.
ABSTRACT In recent years, the use of biostimulants in sustainable agriculture has been growing. Biostimulants can be obtained from different organic materials and include humic substances (HS), complex organic materials, beneficial chemical elements, peptides and amino acids, inorganic salts, seaweed extracts, chitin and chitosan derivatives, antitranspirants, amino acids and other N-containing substances. The application of biostimulants to plants leads to higher content of nutrients in their tissue and positive metabolic changes. For these reasons, the development of new biostimulants has become a focus of scientific interest. Among their different functions, biostimulants influence plant growth and nitrogen metabolism, especially because of their...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hormones; Nitrogen metabolism; Carbon metabolism; Phenylpropanoid pathway; Stress.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000100018

Interspecific xenia and metaxenia in seeds and fruits of tomato
Provedor de dados: 63
Autores: Piotto,Fernando Angelo; Batagin-Piotto,Katherine Derlene; Almeida,Marcílio de; Oliveira,Giancarlo Conde Xavier.
Xenia, the transmission of traits from the pollinizer to the female's tissues, is a phenomenon hitherto unknown in tomatoes. Here, we describe xenia effects on the seeds and fruits of Solanum lycopersicum, the tomato, elicited by S. galapagense. The wild tomatoes, such as S. galapagense, have highly pilose fruit surface and minute seeds, unlike the domesticated species. Crossings between S. galapagense (pollinizer) and two large-seeded, glabrous cultivars of S. lycopersicum (females) tested the former's ability to raise the trichome density and trichome-to-1000-cell ratio and to reduce the seed weight in the latter's fruits. Selfed fruits of the two cultivars, Micro-Tom and Pusa Ruby, were compared to the crossed fruits. The pollen of S. galapagense was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hormones; Pollination; Microscopy; Wild relative.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000200007

ผลของการพอกเมล็ดพันธุ์ร่วมกับฮอร์โมน Gibberellin และ indole-3-butyric acid ต่อคุณภาพเมล็ดพันธุ์ยาสูบพันธุ์เวอร์จิเนียร์
Provedor de dados: 106
Autores: Boonmee Siri; Suriya Trachoo.
Tobacco seeds are very small. This causes difficulty in sowing and resulted in uneven seelings.This experiment aimed to study types and concentrations of hormones for proportion of pelleting tobacco seeds. The experiment was conducted at laboratory of seed quality testing section, Seed Processing Plant, Faculty of Agriculture, Khon Kaen University. The Virginia tobacco seeds were pelleted with pumice, fillers material at the rate 150 g and used hydroxypropyl methylcellulose (HPMC) with concentrations 4 percent by weight as binder material. Two types of hormones, Gibberellin (GA) and Indoie-3-butyric acid (IBA) with four different rates 1, 2, 3, and 4 ml per 3 g of tobacco seeds were used. The tobacco seeds were pelleted by pellet-machine model SKK10. The...
Tipo: PhysicalObject
Palavras-chave: Tobacco seed; Virginia variety; Seed pelleting; Adhesive materials; Gibberellin; Indole-3-butyric acid; GA; IBA; Hormones; Filler materials; Aging seed; Germination percentage; Seed vigour; เมล็ดพันธุ์ยาสูบ; พันธุ์เวอร์จิเนียร์; การพอกเมล็ดพันธุ์; ฮอร์โมน; จิบเบอเรลลิน; ออกซิน; วัสดุประสาน; การเร่งอายุเมล็ดพันธุ์; อัตราการงอกของเมล็ดพันธุ์; ความแข็งแรงของเมล็ดพันธุ์.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5726

ผลของ 17 beta-estradiol ต่อการเปลี่ยนเพศปลาหมอไทยระยะไข่ โดยวิธีการแช่
Provedor de dados: 106
Autores: Phonesack Matthavong; Siripavee Charoenwattanasak; Bundit Yuangsoi; Sutee Wongmaneeprateep.
The effect of 17β-estradiol on sex reversal of climbing perch (Anabas testudineus) egg phase by immersion method were studied. The fish eggs were immersed with 17β-estradiol at the level of 0 (control group), 50, 100, 150 and 200 μg/l in fiberglass tanks containing 5 L freshwater for 4 days. Five hundred eggs were used for each treatment with the experiments being done in 4 replicate. After hatching, hatching rates of the fish were not significantly different regardless of levels 17β-estradiol. Initial length and weight of the fish were measured at the beginning of the experiment. After nursing for 56 days in suitable condition, sex reversal rate, length gain, weight gain, average daily growth, specific growth rate and survival rate of the fishes were...
Tipo: PhysicalObject
Palavras-chave: Climbing perch; Anabas testudineus; Egg phase; Sex reversal; 17 beta-estradiol; Hormones; Immersion method; Growth rate; Survival rate; Sex differentiation; ปลาหมอไทย; ระยะไข่; อัตราการเปลี่ยนเพศ; เพศเมีย; ฮอร์โมน 17 เบต้า-เอสตาไดออล; การแช่ไข่ปลา; อัตราการเจริญเติบโต; อัตราการฟัก; อัตราการรอดตาย; ลักษณะของเซลล์สืบพันธุ์; การเพิ่มผลผลิต; การเปลี่ยนสภาพเพศ.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5799

Abscisic acid and the antioxidant system are involved in germination of Butia capitata seeds
Provedor de dados: 39
Autores: Bicalho,Elisa Monteze; Santos,Talita R. Silva dos; Garcia,Queila Souza.
ABSTRACT Seed germination is an important step for plants without vegetative propagation and is a physiological process that begins with specific environmental cues resulting in biochemical responses. Breaking-dormancy is necessary to study germination in dormant seeds with asynchronous germination. We investigated the processes of breaking dormancy and germination of Butia capitata (Arecaceae) seeds, in which germination is slow and asynchronous, by operculum removal. This treatment increased germination of B. capitata to 90 %. Embryos of dry, imbibed, 24-hours post-operculum removal and early-germinated seeds were collected for biochemical analysis of the following: quantification of abscisic acid (ABA) and hydrogen peroxide (H2O2), activities of...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Breaking-dormancy; Haustorium; Hormones; Palm seeds; Operculum; Physiological dormancy; Reactive oxygen species.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100174

Efeito da suplementação alimentar nas respostas fisiológicas, hormonais e sanguíneas de ovelhas Santa Inês, Ile de France e Texel - DOI: 10.4025/actascianimsci.v31i4.4920
Provedor de dados: 2
Autores: Amaral, Daniele Francine; UEM; Barbosa, Orlando Rus; UEM; Gasparino, Eliane; UEM; Akimoto, Luciene Setsuko; UEM; Lourenço, Fábio José; UEM; Santello, Graziela Aparecida; UEM.
Avaliou-se a suplementação de proteína (12% de proteína bruta (PB) (T1) e 16% de PB (T2)) na temperatura retal (TR), frequências respiratória (FR) e cardíaca (FC), glicose (Gl), albumina (Alb), proteínas totais (PT), triiodotironina (T3) e tiroxina (T4) de 16 ovelhas Santa Inês, 16 Texel e 15 Ile de France. A FR não diferiu no T1 e T2 na Santa Inês e Ile de France, sendo maior na Texel no T2. FR aumentou na primavera, na Texel, seguida da Ile de France e pela Santa Inês e caiu no outono para Santa Inês e Ile de France. FR foi maior à tarde, na Texel, na Ile de France e na Santa Inês. Maior FC na Santa Inês e Texel no T1 e menor na Ile de France. FC na Santa Inês foi superior nas estações do ano, e na primavera maior para todas as raças. Maior Gl, PT, Alb e...
Tipo: Pequisa de campo
Palavras-chave: Dieta; Proteína; Condições climáticas estresse térmico; Hormônios; Ovelhas Ecologia dos Animais Domésticos e Etologia diet; Protein; Weather conditions; Heat stress; Hormones; Sheep.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4920

Determination of endogenous IAA and carbohydrates during the induction and development of protocorm-like bodies of Cattleya tigrina A. Richard
Provedor de dados: 3
Autores: De Conti, Daniela; Corredor-Prado, Jenny Paola; Roecker Junior, Djalma; Suzuki, Rogério Mamoru; Guerra, Miguel Pedro; Pescador, Rosete.
 Tissue culture techniques have been employed for orchid mass propagation by means of the morphogenetic route of protocorm like-bodies (PLBs). This study aimed to analyze and compare Indole-acetic acid (IAA) and sugar endogenous levels in protocorm-like bodies (PLBs) induction and development in Cattleya tigrina, in order to better understand this process and to optimize micropropagation procedure protocols. Leaves grown on MS (Murashige and Skoog) culture medium, suplemented with 9 μM TDZ for PLBs induction and development were collected after 0, 2, 7, 14, 30, 60 and 100 days of cultivation, for further analysis. Increase of IAA and reduction of sugar levels are strongly related to morphogenetic response, that is, PLBs formation over the preexisting ones...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orchid; Hormones; Sugars; Morphogenesis.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/37874

Effect of pain related of sex and estrous cycle on blood plasma glucose, free fatty acids and corticosterone in rats - doi: 10.4025/actascibiolsci.v34i4.10568
Provedor de dados: 3
Autores: Moraes, Elzira Diniz de; Instituto de Ensino Superior de Londrina; Zaia, Cássia Thaís Bussamra Vieira; Universidade Estadual de Londrina; Zaia, Dimas Augusto Morozin; Universidade Estadual de Londrina; Santos, Angelo Alexander Torres dos; Universidade Estadual de Londrina; Ribeiro, Rachel Cezar de Andrade; Universidade Estadual de Londrina; Silva, Andreia Lopes da; Universidade Estadual de Londrina.
Sex differences related with pain have been studied and evidences suggesting influence of sex steroid hormones on the thresholds of pain. Experimental nociception has been test using formalin as a model of nociceptive stimulus. Association of stress, pain and metabolic and hormonal changes has not been explored. The aim of this study was to compare metabolic and hormonal changes between male rats and female rats in proestrus and estrus cycle after painful stimulus by formalin into the masseter muscle. Male and female Wistar rats (200-250 g b.w.) were submitted to an injection of formalin (F, 1.5%) or saline (S, 9.9%) into the masseter muscle and after 0 (N, control group without injection), 5, 15, 30 or 60 minutes they were decapitate and blood was...
Tipo: Estudos fisiológicos
Palavras-chave: 2.00.00.00-6 sex differences; Nociception; Stress; Hormones; Rats 2.07.00.00-8.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10568

Rhodnius prolixus Malpighian tubules and control of diuresis by neurohormones
Provedor de dados: 42
Autores: Martini,Sabrina V.; Nascimento,Suzete B.; Morales,Marcelo M.
Rhodnius prolixus Malpighian tubules (MTs) are a good model for fluid and ion secretion studies in view of the dramatic postprandial diuresis, which follows its massive blood meals. Ingestion of a blood meal equals to 10-12 times their initial body mass, leads to rapid activation of high output by excretory system, which eliminates 40-50% of the fluid mass. Secretion of ions and water is stimulated 1000-fold by serotonin and diuretic hormone. These hormones cooperate synergistically to activate adenylate cyclase activity from MTs cells, which increase the level of intracellular cAMP. The anti-diuretic hormones have also an important role in the fluid maintenance of Rhodnius prolixus. Several hours after insect feeding occurs a reduction in urine flow, that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malpighian tubules; Rhodnius prolixus; Hormones; Fluid secretion.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000100011

Effects of hormonal priming on seed germination of pigeon pea under cadmium stress
Provedor de dados: 42
Autores: SNEIDERIS,LARISSA C.; GAVASSI,MARINA A.; CAMPOS,MARCELO L.; D'AMICO-DAMIÃO,VICTOR; CARVALHO,ROGÉRIO F.
In this work we investigated whether priming with auxin, cytokinin, gibberellin, abscisic acid and ethylene, alters the physiological responses of seeds of pigeon pea germinated under water and cadmium stress. Seeds treated with water or non-treated seeds were used as control. Although compared to non-treated seeds we found that the hormone treatments improve the germination of pigeon pea under cadmium stress, however, these treatments did not differ from water. However, we also observed a trend of tolerance to the effects of cadmium in the presence of ethylene, suggesting that the use of this hormone may be an efficient method to overcome seed germination under metal stress.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cajanus Cajan; Heavy metal; Hormones; Pretreatment in seeds; Abiotic stress.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401847

Effects of Sodium Nitrate and Mixotrophic Culture on Biomass and Lipid Production in Hypersaline Microalgae Dunaliella Viridis Teod
Provedor de dados: 52
Autores: Kharati-Koupaei,Mansour; Moradshahi,Ali.
To access the potential application of Dunaliella viridis Teod. for biofuel production, the effects of culture media composition on biomass and lipid content of this microalgae were investigated. Measured at the 20 th day, sodium nitrate at 5.0 mM augmented biomass production by 26.5 percent compared to control (1 mM sodium nitrate). Total lipids expressed as µg mL-1 of culture also increased with increase in nitrate concentration up to 5.0 mM sodium nitrate, whereas when expressed on the per cell basis, total lipids stayed relatively constant at most of the tested nitrate concentrations except at 0.5 mM which was 31.4 percent higher compared to 1.0 mM nitrate. At 5.0 mM sodium nitrate, by using 20 g L-1 of glucose in mixotrophic culture of D. viridis,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dunaliella viridis; Mixotrophic culture; Biofuel; Biomass; Lipid content; Hormones.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100201

Effect of the dry matter intake level on the sanguine profile of glucose, insulin, urea, estrogen and progesterone and concentration of IGF-I in the follicular liquid of crossbred heifers
Provedor de dados: 52
Autores: Rigolon,Luiz Paulo; Prado,Ivanor Nunes do; Cavalieri,Fábio Luiz Bim; Nascimento,Willian Gonçalves do; Copovila,Luiz Carlos; Ramos,Fabíola dos Santos; Moreira,Fernanda Barros.
The aim of this work was to study effect of the dry matter intake level on the concentrations of glucose, insulin, urea, estrogen and progesterone in the blood and the level of IGF-I in the follicular liquid of heifers. Twenty seven crossbred heifers were used, in three treatments: 1.2, 1.6 and 2.6% of the live weight of dry matter intake (DMI) daily. The sanguine concentrations of glucose and estrogen were higher in the animals with 1.6% of DMI and the insulin levels were higher in the animals with 2.6% of DMI. There was an increase in the sanguine levels of urea with the increase of the DMI. There was no effect of the DMI on the progesterone levels in the sanguine plasma collected from the jugular. The progesterone levels in caudal vena were higher in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: FSH; Hormones; Intake; Nutrition; Reproduction; Superovulation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100008

131I-induced changes in rat thyroid gland function
Provedor de dados: 56
Autores: Torlak,V.; Zemunik,T.; Modun,D.; Capkun,V.; Pesutic-Pisac,V.; Markotic,A.; Pavela-Vrancic,M.; Stanicic,A.
Therapeutic doses of 131I administered to thyrotoxic patients may cause thyroid failure. The present study used a rat model to determine thyroid function after the administration of different doses of 131I (64-277 µCi). Thirty male Fisher rats in the experimental group and 30 in the control group (untreated) were followed for 6 months. The animals were 4 months old at the beginning of the experiment and were sacrificed at an age of 9 months. Hormone concentration was determined before 131I administration (4-month-old animals) and three times following 131I administration, when the animals were 7, 8, and 9 months old. The thyroid glands were removed and weighed, their volume was determined and histopathological examination was performed at the end of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thyroid gland; 131I; Hormones; Histopathology; T3; T4; TSH.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000800009

Gap junction modulation by extracellular signaling molecules: the thymus model
Provedor de dados: 56
Autores: Alves,L.A.; Nihei,O.K.; Fonseca,P.C.; Campos-de-Carvalho,A.C.; Savino,W.
Gap junctions are intercellular channels which connect adjacent cells and allow direct exchange of molecules of low molecular weight between them. Such a communication has been described as fundamental in many systems due to its importance in coordination, proliferation and differentiation. Recently, it has been shown that gap junctional intercellular communication (GJIC) can be modulated by several extracellular soluble factors such as classical hormones, neurotransmitters, interleukins, growth factors and some paracrine substances. Herein, we discuss some aspects of the general modulation of GJIC by extracellular messenger molecules and more particularly the regulation of such communication in the thymus gland. Additionally, we discuss recent data...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thymus; Thymic epithelial cells; Connexin 43; Hormones; Interleukins.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000400012

Utility of basic research in plant/crop physiology in relation to crop improvement: a review and a personal account
Provedor de dados: 61
Autores: El-Sharkawy,Mabrouk A.
Agricultural research and development plays an essential role in a nation's economic development, providing for food security for an ever-increasing population. In developed countries, the gap between potential and actual yield is largely closed because of a combination of advanced technologies, high-yielding new varieties and the application of agrochemicals in highly mechanized production systems. In most of these countries, agricultural production exceeds national demand, resulting in excess products for export. In many of the developing countries, however, agricultural productivity is still far below what it should be because of multiple technical and socio-economic constraints. Food deficits are the norm in poor and middle-income countries, requiring...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agriculture; Breeding; C4-photosynthesis; Drought-tolerance; Ecophysiology; Ecosystems; Hormones; Photoperiod; Productivity; Soil; Water stress.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000400001

Reproductive physiology of mango
Provedor de dados: 61
Autores: Davenport,Thomas L.
Mango flowering involves hormonal regulation of shoot initiation and induction events resulting in reproductive shoot formation. A balance or ratio of endogenously regulated phytohormones, thought to be auxin from leaves and cytokinins from roots, appears to govern the initiation cycle independently from inductive influences. Induction of reproductive or vegetative shoots is thought to be governed by the ratio of a temperature-regulated florigenic promoter and an age regulated vegetative promoter at the time of shoot initiation. Management of off-season flowering in mango trees is being accomplished in the tropics by successfully synchronizing shoot initiation through tip pruning and use of nitrate sprays coupled with management of the stem age to induce...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Auxin; Cytokinin; Flowering management; Fruiting; Hormones; Mangifera indica.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000400007