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| Registros recuperados: 29 | |
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| Rashid,Umer; Ali,Shaukat; Ali,Ghulam Muhammad; Ayub,Najma; Masood,M. Shahid. |
| Four commercially grown wheat varieties of Pakistan, namely Inqilab-91, Chakwal-97, Tatara and Manthar were used for this investigation. For callus induction different concentrations of 2,4-Dichlorophenoxyaceticacid (2,4-D) along with 0.1 mg/L of Kinetin were evaluated. For regeneration initially different concentrations of Indole-3-Acetic Acid (IAA) and 6-BenzylAminoPurine (BAP) were tested. Best hormone combinations were further subjected to Kinetin and 6-γ-γ-dimethylallylaminopurine (2iP). For Inqilab-91, Chakwal-97 and Manthar, 3 mg/L of 2,4-D was found optimum, which induced 83.25%, 77.75% and 95.20%... |
| Tipo: Journal article |
Palavras-chave: 2; 4-D 2iP BAP callus induction IAA kinetin regeneration wheat. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000300004 |
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| Tian,Yanjun; Fan,Yixiao; Liu,Jianjun; Zhao,Xiangying; Chen,Wei. |
| Background: Currently, microbial fermentation method has become the research hotspot for acetoin production. In our previous work, an acetoin-producing strain, Bacillus subtilis SF4-3, was isolated from Japanese traditional fermented food natto. However, its conversion of glucose to acetoin was relatively low. In order to achieve a high-efficient accumulation of acetoin in B. subtilis SF4-3, main medium components and fermentation conditions were evaluated in this work. Results: The by-products analysis showed that there existed reversible transformation between acetoin and 2,3-butanediol that was strictly responsible for acetoin production in B. subtilis SF4-3. The carbon sources, nitrogen sources and agitation speed were... |
| Tipo: Journal article |
Palavras-chave: 2; 3-Butanediol Acetoin Bacillus subtilis SF4-3 Reversible transformation. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000100007 |
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| Gedikli,Serap; Aytar,Pinar; Ünal,Arzu; Yamaç,Mustafa; Çabuk,Ahmet; Kolankaya,Nazif. |
| Lacasse is one of the extracellular enzymes excreted from white and brown rot fungi, which is involved in ligninolysis. In the present study, the effects of the addition of lacasse inducers to the medium on enhancement of enzyme production under conditions of submerged fermentation were researched. At first, a culture medium was selected suitable for lacasse production. To increase the production of lacasse using different inducers and to examine the ability of dechlorination, this article focuses on screen lacasse activity of 21 basidiomycetes isolates grown in five culture media. All inducers evaluated influenced lacasse activity positively except for gallic acid, mannitol, and malt extract for studied isolates. Our findings showed that lacasse activity... |
| Tipo: Journal article |
Palavras-chave: 2; 4; 5-trichlorophenol basidiomycetes dechlorination inducer lacasse. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000600006 |
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| Aoki, Kaori. |
| A tephra layer with normal grading in the sub‐bottom depth interval 119–122 cm in marine core SO202‐27‐6 was collected on Patton Seamount in the northeast North Pacific Ocean. Based on the geochemistry of volcanic glass shards determined by a wavelength dispersive electron probe micro‐analyser and an X‐ray fluorescence analyser, this layer is correlated to the Dawson tephra, a widespread late Pleistocene time marker tephra in Alaska and the Yukon. The age of the Dawson tephra in the core is 29.03 ± 0.178 ka (1 sigma) based on a published age model. The Dawson tephra is revealed to have been deposited in the transition from marine isotope stage 3 to 2, i.e. the last stage of Heinrich Stadial 3 derived from the ice‐rafted... |
| Tipo: Text |
Palavras-chave: Dawson tephra; Heinrich Stadial; Late Pleistocene; Marine sediment; MIS3; 2. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00598/71056/69371.pdf |
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| KALSING,A.; LUCIO,F.R.; ROSSI,C.V.S.; RAMPAZZO,P.E.; GONÇALVES,F.P.; VALERIANO,R.. |
| ABSTRACT: The DAS-444Ø6-6 soybean expresses AAD-12, 2mEPSPS and PAT enzymes to provide, respectively, tolerance to 2,4-D, glyphosate and ammonium glufosinate. This event is also associated with DAS-81419-2 expressing Cry1Ac and Cry1F proteins to provide protection against a broad spectrum of soybean lepidopteran insect species. Successful adoption by growers of these technologies relies on the traits performing in the diverse environments of Brazil, especially under adverse weather conditions. The objective of this study was to characterize the tolerance of DAS 444Ø6-6 and DAS-444Ø6-6 x DAS-81419-2 soybeans to |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-Dichlorophenoxyacetic acid aryloxyalkanoate dioxygenase-12 ConkestaTM + Enlist E3TM Enlist E3TM Glycine max injury. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100272 |
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| Queiroz,A.R.S.; Vidal,R.A.. |
| O composto diclorofenoxiacetato (2,4-D) foi o primeiro herbicida orgânico, sistêmico, seletivo e de aplicação em pós-emergência desenvolvido no mundo. Juntamente com a revolução verde, ele contribuiu para elevar a produção dos cereais nas décadas posteriores a 1950. Esse produto é uma auxina sintética que pode ser utilizada como regulador do crescimento vegetal ou, ainda, como herbicida para o controle de espécies daninhas dicotiledôneas. Várias espécies infestantes dicotiledôneas que apresentam dificuldade de controle com outros herbicidas são suscetíveis ao 2,4-D. Contudo, a utilização desse herbicida fica restrita pela falta de seletividade em algumas culturas agrícolas. Nas últimas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D plantas daninhas resistência aos herbicidas. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000300021 |
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| Costa,N.V.; Cardoso,L.A.; Marchi,S.R.; Domingos,V.D.; Martins,D.. |
| As espécies de plantas aquáticas podem causar inúmeros inconvenientes ao uso múltiplo da água quando elas se desenvolvem desordenadamente. Assim, o objetivo deste trabalho foi avaliar a eficiência de diferentes herbicidas no controle químico de plantas de Alternanthera philoxeroides, Enhydra anagallis e Pycreus decumbens em caixa-d'água. Quando as plantas atingiram o seu pleno desenvolvimento (antes do florescimento), foram aplicados, nas espécies Alternanthera philoxeroides e Enhydra anagallis, os herbicidas: 2,4-D amina (U-46 D FLUID 720) a 2.880 g e.a. ha-1; diquat (REWARD 240) a 480 g i.a. ha-1; imazapyr (ARSENAL 250) a 500 e 750 g e.a. ha-1; glyphosate (RODEO 480) a 3.360 g e.a. ha-1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D diquat imazapyr glyphosate planta daninha. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582005000200022 |
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| Cardoso,L.R.; Martins,D.; Terra,M.A.. |
| Com o objetivo de avaliar o efeito de herbicidas em diferentes acessos de aguapé coletados em reservatórios de hidrelétricas do Estado de São Paulo, foi realizado um estudo no Núcleo de Pesquisas Avançadas em Matologia da FCA-UNESP, campus de Botucatu. A escolha das plantas geneticamente diferentes foi feita com base em estudos de variabilidade genética, nos quais se utilizou a técnica de RAPD. Avaliou-se o efeito dos herbicidas imazapyr nas doses de 62,5 e 125,0 g e.a. ha-1, glyphosate a 1.680 e 3.360 g e.a. ha-1 + 0,5% V/V de Extravon, diquat a 480 e 960 g i.a. ha-1 e 2,4-D a 670 e 1.340 g e.a. ha-1. Os seis acessos escolhidos foram colocados em caixas plásticas de 28,0 x 14,0 x 12,0 cm, contendo 4 litros de água. A... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D glyphosate imazapyr diquat Eichhornia crassipes. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582003000400009 |
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| Reis,M.R.; Silva,A.A.; Guimarães,A.A.; Khouri,C.R.; Ferreira,E.A.; Ferreira,F.A.; Freitas,M.A.M.. |
| Avaliaram-se, neste trabalho, os efeitos dos herbicidas ametryn, 2,4-D, trifloxysulfuron-sodium e da mistura ametryn+trifloxysulfuron-sodium na nutrição mineral e no crescimento da cana-de-açúcar. Para isso, utilizou-se o delineamento inteiramente casualizado no esquema de parcelas subdivididas, com quatro repetições. Os efeitos dos herbicidas foram avaliados nas parcelas, e o efeito do tempo, expresso em dias após aplicação dos herbicidas (DAA), considerando as diversas amostragens nas subparcelas. Os herbicidas foram aplicados em pós-emergência, quando as plantas de cana-de-açúcar se apresentavam com três a quatro folhas. As características avaliadas foram: a altura e massa seca da parte aérea, o número de folhas, o... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D ametryn trifloxysulfuron-sodium macronutrientes micronutrientes. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000100018 |
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| KALSING,A.; ROSSI,C.V.S.; LUCIO,F.R.; MINOZZI,G.B.; GONÇALVES,F.P.; VALERIANO,R.. |
| ABSTRACT: Spermacoce latifolia, S. verticillata, and Richardia brasiliensis (family Rubiaceae, tribe Spermacoceae) are glyphosate-tolerant weeds in the soybean producing areas of Brazil. The weed shifts to glyphosate-tolerant weeds across soybean-producing areas has shown the need for adoption of practices that conserve the efficacy of glyphosate. This study evaluated the effect of single- and double-knockdown herbicide applications on the control of S. latifolia, S. verticillata, and R. brasiliensis prior to soybean sowing. Trials were designed as a randomized block and treatments were arranged as a factorial. Factor A was three systemic herbicide treatments 10 days before sowing (DBS), while Factor B was three contact herbicide treatments applied 0 DBS... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-dichlorophenoxyacetic acid ammonium glufosinate Spermacoce latifolia Spermacoce verticillata Richardia brasiliensis. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100223 |
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| Pescador,Rosete; Kerbauy,Gilberto Barbante; Viviani,Daniela; Kraus,Jane Elizabeth. |
| Somatic embryogenesis represents a valuable tool for the studies on the basic aspects of plant embryo development. Today this process is used as a potencial technique for large-scale plant micropropagation although, so far, it has been applied to only a small number of species. However, when somatic embryos are malformed they are considered economically useless. In Acca sellowiana (O. Berg) Burret, an important fruit-producing crop, large amounts of anomalous somatic embryos (76.3%) were found just after 40 days of culture of explants in a 2,4-D containing medium. Among the anomalous forms found in the cotiledonary stage, 12.2% consisted of fused embryos, 40.4% displayed fused cotyledons,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D feijoa morphohistological analysis somaclonal variation somatic embryogenesis. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042008000100014 |
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| Beloti,Vanerli; Barros,Márcia A.F.; Freitas,Júlio C. de; Nero,Luís A.; Souza,Juliana A. de; Santana,Elsa H.W.; Franco,Bernadette. D.G.M.. |
| 2,3,5-triphenyltetrazolium chloride (TTC) is a dye largely used for enumeration of microbial colonies in solid culture media, being a key component of the dry rehydratable film system used for microbiological analysis of food. This dye is colorless in the oxidized form and red when reduced by microorganisms, due to formation of formazan. In this study, TTC was added to Plate Count Agar (PCA) for enumeration of microorganisms in thirty four pasteurized milk samples, with the aim to verify the frequency of microorganisms that are unable to reduce TTC. Milk samples were decimally diluted in saline and pour-plated in PCA plus 0.015% TTC. Colonies were counted after 24h and 48 h of incubation at 35oC. From a total of 50,574... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 3; 5-triphenyltetrazolium chloride TTC pasteurized milk microbial counts. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000200009 |
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| RODRÍGUEZ URQUIZA,Mayelín; GÓMEZ KOSKY,Rafael; MARTÍNEZ,Silvio de Jesús; PONS CORONA,Mileydi; PÉREZ PERALTA,Martha; LA ¨O¨ CÁRDENAS,Mariana; ROMERO QUINTANA,Carlos. |
| Existen varios protocolos de regeneración de plantas vía embriogénesis somática de Sorghum bicolor (L.) Moench, sin embargo los porcentajes de formación de callos con estructuras embriogénicas y regeneración de plantas son bajos. Es por ello que esta investigación tuvo como objetivo generar embriones somáticos en sorgo rojo variedad CIAP 132-R. Se ensayaron diferentes concentraciones de 2,4-D para la formación de callos, así como tres concentraciones de ácido ascórbico para eliminar la exudación de compuestos fenólicos por el explante. También para la formación de los embriones somáticos a partir de los callos se evaluaron diferentes concentraciones de 2,4-D y 6-BAP. El mayor porcentaje de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-Diclorofenoxiacético 6-Bencilaminopurina callos embriogénesis somática sorgo. |
| Ano: 2015 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000200023 |
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| Balagué,Claudia; Evangelista de Duffard,Ana María. |
| Existen algunos datos epidemiológicos que demuestran que, en poblaciones rurales, la frecuencia de lesiones inflamatorias de origen infeccioso en el riñón es mayor en individuos expuestos a pesticidas. Estudios previos han demostrado que el herbicida 2,4- D altera las propiedades de adherencia bacteriana a riñón, mediada por fimbrias de Escherichia coli uropatógena, si bien aún no se ha estudiado el mecanismo que podría estar involucrado. El 2,4-D demostró capacidad de generar uniones covalentes a proteínas de bacilos gram negativos. Debido a este hallazgo, se hipotetizó que la unión del herbicida a proteínas involucradas en la síntesis, exportación o ensamble de las subunidades fimbriales... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2; 4-D Fimbrias Escherichia coli Infección urinaria. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432006000100004 |
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| CHIPOLINE,INGRID C.; ALVES,EVELYNE; BRANCO,PAOLA; COSTA-LOTUFO,LETICIA V.; FERREIRA,VITOR F.; SILVA,FERNANDO C. DA. |
| ABSTRACT The 1,2-naphthoquinone compound was previously considered active against solid tumors. Moreover, glycosidase inhibitors such as 1,2,3-1H triazoles has been pointed out as efficient compounds in anticancer activity studies. Thus, a series of eleven 1,2-naphthoquinones tethered in C2 to 1,2,3-1H-triazoles 9a-k were designed, synthesized and their cytotoxic activity evaluated using HCT-116 (colon adenocarcinoma), MCF-7 (breast adenocarcinoma) and RPE (human nontumor cell line from retinal epithelium). The chemical synthesis was performed from C-3 allylation of lawsone followed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Naphthoquinones lawsone 1; 2; 3-triazoles cancer colon adenocarcinoma breast adenocarcinoma. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000301027 |
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| Registros recuperados: 29 | |
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