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| Registros recuperados: 35 | |
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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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| Hoenemann,Claudia; Ambold,Juliane; Hohe,Annette. |
| Background: Cyclamen persicum is an economically important ornamental crop that is propagated exclusively through seeds as vegetative propagation using cuttings is not possible. Therefore a micropropagation method through somatic embryogenesis is of high interest; however the method suffers from low reliability concerning quality and quantity of the produced plantlets. A crucial step of the protocol is the removal of plant growth regulators (PGRs) that triggers embryo development. In order to get a better insight in this crucial step of the propagation process, a gene expression analysis has been set up using five different genes of glutathione S-transferases (GST) as these are known to be auxin responsive as well as stress reactive. Results: One out of... |
| Tipo: Journal article |
Palavras-chave: Auxin; Callus; Micropropagation; Semisolid medium; Suspension culture. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000100006 |
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| Haensch,Klaus-Thomas. |
| This long-term study demonstrates for the first time that it is possible to propagate embryogenic cultures in pelargoniums and to subsequently initiate the differentiation of embryos using the cultivar Madame Layal (Pelargonium x domesticum). Propagation of callus was only possible with combinations of 2,4-dichlorophenoxyacetic acid (2,4-D) and 6-benzylaminopurine (BAP), which gave rise to embryos from the primary culture stage on. However, the propagation of cells, as well as the differentiation of embryos, was inhibited by a continuous application of these growth regulators. For this reason, a long period on medium lacking growth regulators was necessary before the differentiation of embryos occurred again. The consequences for improving the propagation... |
| Tipo: Journal article |
Palavras-chave: Auxin; Cytokinin; Propagation; Somatic embryogenesis. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000100007 |
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| Bücker-Neto,Lauro; Paiva,Ana Luiza Sobral; Machado,Ronei Dorneles; Arenhart,Rafael Augusto; Margis-Pinheiro,Marcia. |
| Abstract Heavy metals are natural non-biodegradable constituents of the Earth's crust that accumulate and persist indefinitely in the ecosystem as a result of human activities. Since the industrial revolution, the concentration of cadmium, arsenic, lead, mercury and zinc, amongst others, have increasingly contaminated soil and water resources, leading to significant yield losses in plants. These issues have become an important concern of scientific interest. Understanding the molecular and physiological responses of plants to heavy metal stress is critical in order to maximize their productivity. Recent research has extended our view of how plant hormones can regulate and integrate growth responses to various environmental cues in order to sustain life. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ABA; Auxin; Brassinosteroid; Ethylene; Abiotic stress. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000200373 |
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| Munguía-Rodríguez,Aarón Giovanni; López-Bucio,Jesús Salvador; Ruiz-Herrera,León Francisco; Ortiz-Castro,Randy; Guevara-García,Ángel Arturo; Marsch-Martínez,Nayelli; Carreón-Abud,Yazmín; López-Bucio,José; Martínez-Trujillo,Miguel. |
| Abstract Auxin regulates a plethora of events during plant growth and development, acting in concert with other phytohormones. YUCCA genes encode flavin monooxygenases that function in tryptophan-dependent auxin biosynthesis. To understand the contribution of the YUCCA4 (YUC4) gene on auxin homeostasis, plant growth and interaction with abscisic acid (ABA) signaling, 35S::YUC4 seedlings were generated, which showed elongated hypocotyls with hyponastic leaves and changes in root system architecture that correlate with enhanced auxin responsive gene expression. Differential expression of PIN1, 2, 3 and 7 auxin transporters was detected in roots of YUC4 overexpressing seedlings compared to the wild-type: PIN1 was down-regulated whereas PIN2, PIN3 and PIN7... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arabidopsis; Auxin; Abscisic acid; YUCCA4; Root growth; Germination. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100302 |
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| Pimenta, Alex Caetano; Zuffellato-Ribas, Katia Christina; Oliveira, Brás Heleno de; Carpanezzi, Antonio Aparecido; Koehler, Henrique Soares. |
| O pau-de-leite (Sapium glandulatum (Vell.) Pax., Euphorbiaceae) é uma árvore nativa de vários biomas brasileiros, com grande interesse para a recuperação de ecossistemas degradados devido à sua rusticidade e ornitocoria intensa. Contudo, sua propagação sexuada é difícil, uma vez que a maioria das flores é masculina e a porcentagem de germinação das sementes é muito baixa. Durante os anos de 2001 e 2002, foram realizados trabalhos de propagação vegetativa via estaquia na Embrapa Florestas (Colombo-PR), com estacas semilenhosas de 15 cm de comprimento e duas metades de folhas, coletadas nas quatro estações do ano. As bases das estacas foram tratadas com 0, 6000 e 12000 mg L-1 ácido indol butírico (IBA), sozinho ou associado com 100 mg L-1 de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Estaquia; Auxina; Ácido indol butírico; Uniconazol Cutting; Auxin; Indolebutyric acid; Uniconazol. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/240 |
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| Althaus, Michelle Melissa; Leal, Luciana Christina; Silveira, Fernanda Christina; Zuffellato-Ribas, Katia Christina; Ribas, Luciana Lopes Fortes. |
| Berberis laurina Billb. (Berberidaceae) is a native shrub from Floresta Ombrófila Mista ecological formation, very ornamental and useful specie for recovery of degraded areas. With medical applications, its fruit is edible and its roots are used as dye. This paper aims to analyze lhe induction of lhe rooting of Berberis laurina stem cuttings employing indolebutyric acid (IBA) in O, 1000 and 2000 mgL-1 concentrations, using the vermiculite as growing medium. In october 2003, stem cuttings were collected from eight stock plants, located in Fazenda Rio Grande - PR. Semi-hardwood cuttings were preppared with 8.0 cm long by 0.35 cm of diameter shape, containing three leaves on the top, cut in a half, the base was cut in diagonal and the top was cut straight,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rooting; Auxin; Ornamental species; Species for recovery of degraded areas Enraizamento; Auxina; Espécie ornamental; Recuperação de áreas degradadas. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/243 |
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| SILVA,J.R.O.; MARQUES,J.N.R.; GODOY,C.V.C.; BATISTA,L.B.; SILVA,A.A.; RONCHI,C.P.. |
| ABSTRACT: The hormesis effect of 2,4-D, applied at two stages of soybean development, on the physiological components of crop yield, was investigated. Soybean seeds of the cultivar ‘AG 3680 IPRO’ were sown in pots containing 7 L of a substrate and kept in a greenhouse. A randomized complete block design with four replicates was used. Eighteen treatments were tested, arranged in a split-plot scheme. The plots consisted of two stages of herbicide application (V4 and V6), and the split-plots were arranged by nine 2,4-D doses (0, 5, 10, 15, 20, 25, 30, 40, and 50 g ha-1). At the time of harvest, 100 days after sowing, significant interactions between crop development stages and 2,4-D doses were observed for the number of nodes in the main stem (NNMS) and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Auxin; Herbicide. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100154 |
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| PAIXÃO,MARCUS VINICIUS SANDOVAL; LOPES,JOSÉ CARLOS; SCHMILDT,EDILSON ROMAIS; ALEXANDRE,RODRIGO SOBREIRA; MENEGHELLI,CAROLINE MERLO. |
| ABSTRACT This study aimed to evaluate the potential of multi-stems in avocado seeds according to their mass as well as the adventitious rooting of multi-stem budding with or without the use of auxin. The research was carried out at the Vegetation House of Federal Institute of Espírito Santo, Campus Santa Teresa -ES, with seeds of different masses: <60 g, 61 to 80 g, 81 to 100 g and >100 g, in which each experimental unit was made of five seeds, distributed within five repetitions, under a completely randomized design. The seeds were put to germinate and the percentage number of emergence and multiple stems were evaluated. After 150 days, the following evaluations were carried out: survival of rooted cuttings; number of leaves; stem diameter; root... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avocado; Seeds; Multi-stem; Rooting; Auxin; Persea americana Miller. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000200901 |
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| Sousa,Cleiton Mateus; Busquet,Rubens Nei; Vasconcellos,Marco Antônio da Silva; Miranda,Ricardo Motta. |
| Propagation of the fig tree predominately uses hardwood cuttings obtained from pruning stock plants. With a view to optimising fig tree propagation, the effects of auxin and misting on the rooting of herbaceous and hardwood cuttings from the fig tree were evaluated. An experiment was set up in a 2x2x2 factorial design, with two types of cuttings (softwood and hardwood), two levels of auxin (0 and 1000 mg L-1 indolbutyric acid) and two environments (with and without misting). Thirty days after starting the experiment, rooting, root length, sprouting and losses were all evaluated. The interaction of the type of cutting and the auxin was significant for rooting, sprouting, root length and cutting loss. Misting did not affect the variables analysed. In the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fig tree; Auxin; Plant propagation; Cut. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200016 |
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| Dalanhol, Samanta Jaqueline; Mantoan, Luís Paulo Benetti; Amaro, Amanda Cristina Esteves; Ferreira, Gisela. |
| The aim of this study was to evaluate the effects of the application of plant growth regulator on gas exchange in A. emarginata seedlings subjected to different NaCl concentrations. We evaluated the gas exchange in A. emarginata seedlings subject to the presence and absence of plant growth regulator consisting of kinetin, gibberellic acid, and indolbutyric acid and three concentrations of NaCl (0 mM, 50 mM, and 100 mM). When assessing these factors individually, it was observed that in the presence of plant growth regulators, there was a reduction in stomatal conductance and transpiration, and NaCl concentration (50 mM and 100 mM) caused a reduction in CO2 assimilation, stomatal conductance, and transpiration. There was no significant interaction between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auxin; Cytokinin; Gibberellin; Photosynthesis; Sodium chloride.. |
| Ano: 2018 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/16139 |
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| Schmildt, Edílson Romais; UFES; Amaral, José Augusto Teixeira do; UFES; Schmildt, Omar; UENF; Coelho, Ruimário Inácio; UFES; Rabello, Wanderson Souza; UENF; Martins Filho, Sebastião; UFV. |
| Este trabalho teve como objetivo avaliar a resposta rizogênica in vitro de ápices caulinares de plantas jovens de mamoeiro ‘Tainung 01’, em diferentes tempos de permanência em meios de indução e regeneração. O meio de indução empregado foi o MS, suplementado com complementos orgânicos constituídos de sacarose, mio-inositol, tiamina, piridoxina, ácido nicotínico, além de AIB. O meio de regeneração diferiu do meio de indução por ser desprovido de AIB. Os tratamentos consistiram em tempos variáveis de permanência dos explantes nos meios de indução e de regeneração (indução/regeneração): 0/25; 5/20; 10/15; 15/10; 20/5 e 25/0 dias. O delineamento experimental foi inteiramente casualisado, com seis tratamentos e quatro repetições, e cada unidade experimental foi... |
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Palavras-chave: 5.01.03.04-0 Produção de Mudas Carica papaya; Auxina; Micropropagação; Cultura de tecidos Carica papaya; Auxin; Micropropagation; Tissue culture. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/863 |
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| Registros recuperados: 35 | |
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