|
|
|
| Registros recuperados: 50 | |
|
|
| Biagioli,Carolina; Rios,Raúl; Basso,Alicia; Franzone,Pascual; Prina,Alberto. |
| Although it is generally accepted that plant in vitro culture response is influenced by the donor genotype, the genetic and molecular bases of this phenomenon are barely known. As a consequence, the optimization of tissue culture protocols is mainly empirically done. Researchers of the IGEAF studied the genetic basis of the in vitro regeneration of various plant species, including the tissue culture response of artificially induced barley mutants. One barley mutant, MC 169, carries a nuclear gene, recently described controlling the root growth in hydroponic cultivation. Under this condition, the roots of MC 169 mutant plants were longer than those of the original wild type line MC 182, a fact that was associated with a reduced ethylene biosynthesis. On the... |
| Tipo: Journal article |
Palavras-chave: Callus induction; Ethylene; Habituated calli; Hydroponic culture; Regeneration. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000300019 |
| |
|
|
| Liu,Chunming; Zhao,Yixin; Liu,Jianfeng; Gen,Wanting; Cheng,Yunqing. |
| Background Ethylene is capable of promoting seed germination in some plant species. Mobilization of metals such as Fe, Cu, Mn, and Zn in mature seeds takes place when seeds are germinating. However, whether ethylene is involved in the regulation of soybean seed germination and metal element mobilization during early seed germination stage remains unknown. In the present study, seeds were treated with ethylene synthesis inhibitor aminoethoxyvinylglycine (AVG) and ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC), and double distilled H2O (ddH(2)0) treatment was used as control. Ethylene emission, ACC synthase (ACS) expression, ACS enzyme activity and Ca, Zn, Mn, Cu and Fe content in hypocotyls were qualified to analyze the relationship between... |
| Tipo: Journal article |
Palavras-chave: ACC synthase; Bioavailability; Ethylene; Metallic elements; Seed germination; Soybean. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000500001 |
| |
|
|
| Kumar,Vinod; Parvatam,Giridhar; Ravishankar,Gokare Aswathanarayana. |
| The aim of this review is to critically analyze the role of silver nitrate (AgNO3) in modulating plant growth and development. In recent years, basic studies on ethylene regulation opened new vistas for applied research in the area of micro-propagation, somatic embryogenesis, in vitro flowering, growth promotion, fruit ripening, and sex expression. Silver nitrate has proved to be a very potent inhibitor of ethylene action and is widely used in plant tissue culture. Few properties of silver nitrate such as easy availability, solubility in water, specificity and stability make it very useful for various applications in exploiting plant growth regulation and morphogenesis in vivo and in vitro. Silver ion mediated responses seem to be involved in polyamines,... |
| Tipo: Journal article |
Palavras-chave: Calcium; Ethylene; Morphogenesis; Polyamines; Silver nitrate; Somatic embryogenesis. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000200008 |
| |
|
|
| Diarra,Sabake T; He,Ji; Wang,Jianbo; Li,Jiaru. |
| Background: The perennial medicinal herb Dioscorea zingiberensis is a very important plant used for steroid drug manufacturing for its high level of diosgenin in rhizome. Although the stimulation of diosgenin accumulation by ethylene has been reported in a few of plant species, its regulation is not yet characterized at the molecular level, the underlying molecular mechanism remains elusive. Results: In this study, the effects of ethylene on diosgenin biosynthesis in in vitro cultures of D. zingiberensis were described. The results showed that, in samples treated with ethylene at concentration E3 (10(4) dilution of 40% ethephon), the diosgenin biosynthesis was significantly promoted in comparison with the control samples. Treatment with high concentrations... |
| Tipo: Journal article |
Palavras-chave: Diosgenin; Dioscorea zingiberensis; Ethylene; Gene expression. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000500006 |
| |
|
|
| MACHADO,FRANCISCA L. DE C.; CAJAZEIRA,JOÃO P.; COSTA,JOSÉ M. C. DA. |
| This study aimed at evaluating the effects of ethylene on peel color and compositional changes in ‘Lane late’ orange stored under refrigerated and ambient conditions. Physiologically mature, but green-peeled, oranges were exposed to ethylene gas under room temperature and high relative humidity for 24 hours. Storage chamber was ventilated with fresh air after 12 hours to mitigate consequences derived from fruit respiration. Both nondestructive analysis, such as peel color (hue angle, chromaticity, and brightness) and weight loss, and destructive ones (soluble solids, titratable acidity, pH, soluble solids to acidity ratio, and puncture force) were performed upon harvest, after degreening, and every three days during eighteen days in storage. Experiment was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis (L.) Osbeck; Peel Color; Ethylene; Fruit Internal Quality. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000100144 |
| |
|
|
| 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 |
| |
|
|
| Moretti,Celso Luiz; Araújo,Alessandra L.; Marouelli,Waldir Aparecido; Silva,Washington Luiz C.. |
| Tomato (Lycopersicon esculentum Mill.) fruits, cv. Santa Clara, were harvested at the breaker stage from commercial fields in Brazlândia, Brazil, to investigate the ability of 1-methylcyclopropene (1-MCP) to retard tomato fruit ripening. Fruit without external blemishes were graded for size (diameter = 80±5 mm) and mass (m = 130±10 g), placed inside hermetically sealed boxes, and 1-MCP was applied for 12 hours (T = 22±1°C; RH = 80-85%) at four different concentrations: 0 (control), 250, 500 and 1000 mL.L-1. Fruits were held at ambient conditions (T = 23±2°C; RH 80-85%) for 2 days and then stored inside a cold room (T = 20±1°C; RH = 85-95%). Every 3 days, during a 15-day period, fruits were analyzed for firmness, total soluble solids, titratable acidity,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Acidity; Color; Carotenoids; Ethylene; Firmness; Postharvest. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362002000400030 |
| |
|
|
| Donegá,Mateus Augusto; Tessmer,Magda Andréia; Mooz,Edinéia D; Dall'Orto,Luigi TC; Sasaki,Fabiana FC; Kluge,Ricardo Alfredo. |
| The objective of this study was to evaluate the microbiological, physiological and qualitative changes in fresh cut yam (Dioscorea alata) stored at different temperatures. The experimental design was completely randomized in factorial scheme 4x4, with four storage temperatures (5, 10, 15 and 20ºC) and four evaluation periods (0, 3, 6 and 9 days after processing) with four replications. The microbiological analyzes were performed at 0, 3 and 9 days after processing. Fresh cut yam stored at 5ºC kept respiration rate, ethylene production at low levels similar to those found in yam not processed and stored at 20ºC. The weight loss, lightness and psicotrophic bacteria counting in fresh cut yam stored at 5ºC were kept within the trading patterns until the third... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dioscorea alata; Respiration; Ethylene; Microbiology. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362013000200012 |
| |
|
| |
|
| |
|
| |
|
|
| Ribeiro, Maitê dos Santos; Steffens, Cristiano André; Oliveira, Luciana Magda; Garcia, Cristhyane; Pikart, Tiago Georg; Souza, Gabriely Koerich. |
| Este trabalho objetivou avaliar a eficiência de tratamentos pré-germinativos na promoção da germinação e crescimento inicial de plântulas de palmiteiro. Os tratamentos avaliados foram: controle, imersão em solução de GA3, exposição ao etileno, imersão em água, imersão em H2SO4, escarificação mecânica, estratificação por 30 dias a 10°C, e escarificação seguida de estratificação. A imersão de sementes em solução de ácido giberélico (GA3; 2000 µL L-1 durante 24 h) ou sua exposição ao etileno (1000 µL L-1 durante 24 h) são eficientes para a promoção da emergência e crescimento inicial de plântulas de palmiteiro. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Florestais; Silvicultura; Tecnologia de Sementes Florestais Euterpe edulis; Dormência; Etileno; Ácido giberélico Euterpe edulis; Dormancy; Ethylene; Gibberellic acid. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/663 |
| |
|
|
| Zheng-Quan,Gao; Chun-Xiao,Meng; Nai-Hao,Ye. |
| The objective of this work was to assess stimulated latex flow from rubber trees (Hevea brasiliensis) with saturated macrolide (latrunculin A), 1, 5, and 10% potassium iodide in 2% methylcellulose compared with 0.3% ethylene in 2% methylcellulose (check) and 2% methylcellulose (blank). Latex output and contents of pure rubber, total solid, sucrose, inorganic phosphorus, thiol, and Mg2+ were measured. The treatments containing 1% KI or saturated macrolide increased latex yields compared to the blank with 2% methylcellulose alone. The 1% KI or saturated macrolide treatments were equal to that of 0.3% ethylene check treatment. However, 5 and 10% KI were harmful to bark of rubber trees, even caused prolonged tapping panel dryness. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethylene; Latex yields; Macrolide; Microfilaments; Physiological parameters; Potassium iodide. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000200018 |
| |
|
|
| Abrameto1,MA; Pozzo Ardizzi,CM; Gil,MI; Molina,LM. |
| Costly investments in storage and transport of onion bulbs makes it increasingly important to identify cultivars with the best chance of long-term storage. This paper discusses our own and other researchers' results and laboratory procedures on onion's pungency, soluble solids, dry matter, respiration rate, carbohydrates and catabolism-related enzymes under different storage conditions. The variability in parameters such as carbohydrate composition, pungency, soluble solids and soluble uronic acid concentration in water is growth dependent, and defines the quality of onion bulbs at harvest time. During storage, these parameters can be modified by environmental conditions, presence of pathogens or termination of dormancy. Under postharvest conditions,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa L.; Respiration rate; Sprouting; Ethylene; Non-structural carbohydrates; Enzyme activity. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572010000200003 |
| |
|
| |
|
| |
|
|
| Amarante,Cassandro Vidal Talamini do; Simioni,Anderson; Megguer,Clarice Aparecida; Blum,Luiz Eduardo Bassay. |
| Apple trees cultivars Gala and Fuji were sprayed four weeks before commercial harvest with aminoethoxyvinilglycine (AVG), at doses of 0, 125, or 250 mg L-1, and assessed for preharvest fruit drop, fruit growth, and maturation on tree. In 'Gala', 64 days after AVG spraying, fruit drop for control treatment was 85%, and AVG (at 125 and 250 mg L-1) reduced it to 10%. In 'Fuji', 64 days after AVG spraying, fruit drop for control was 6%, while treatments with AVG (at 125 and 250 mg L-1) increased fruit drop to 10%. AVG was a powerful retardant of fruit maturation for 'Gala' but not for 'Fuji'. In 'Gala', the most affected attribute was the skin background color, followed, in decreasing order, by soluble solids content, the starch index, skin red color, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malus domestica Borkh.; Regulator; Ethylene; Fruit growth; Fruit quality. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452002000300022 |
| |
|
|
| Amarante,Cassandro Vidal Talamini do; Silveira,João Paulo Generoso; Freitas,Sergio Tonetto de; Steffens,Cristiano André; Mitcham,Elizabeth J.. |
| Abstract The objective of this study was to assess the effects of post-bloom (PB) or preharvest (PH) treatments of ‘Braeburn’ apple trees with prohexadione-calcium (ProCa; 300 mg L-1), an inhibitor of gibberellins biosynthesis, or GA4+7 (300 mg L-1) on fruit quality at harvest and after storage (four months at 0±0.5 oC, followed by five days of shelf life). PB treatments started 15 days after full bloom, with one application every week and six applications in total. PH treatments started five weeks before anticipated harvest, with one application every week and four applications in total. Control trees were sprayed with water. GA4+7 PB increased length/diameter ratio, and GA4+7 PH increased titratable acidity (TA) and flesh firmness and slightly reduced... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Anti-gibberellin; Ethylene; Malus domestica Borkh; Maturity; Skin color. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452021000103004 |
| |
|
|
| Soethe,Cristina; Steffens,Cristiano André; Hawerroth,Fernando José; Amarante,Cassandro Vidal Talamini do; Heinzen,Angélica Schmitz; Stanger,Mayara Cristiana. |
| Abstract The aim of this work was to evaluate the effect of single and multiple pre-harvest spray aminoethoxyvinylglycine (AVG) applications with or without ethephon, in ‘Baigent’ apple trees cultivated under anti-hail screen and harvesting date on fruit quality after storage. The experiment was conducted in a commercial orchard in the municipality of Vacaria/RS, in the 2014/15 and 2015/16 harvests. Treatments consisted of: control (plants sprayed with water); AVG (125 mg L-1, 30 days before the predicted harvest date; BPHD); ethephon (120 mg L-1, seven BPHD); AVG (62.5 mg L-1 + 62.5 mg L-1, 30 and 20 BPHD); AVG (62.5 mg L-1 + 62.5 mg L-1, 30 and 20 BPHD) + ethephon (120 mg L-1, seven BPHD). Fruits of all treatments were harvested at commercial harvest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malus domestica; Growth regulators; Ethylene; Cold storage. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000300302 |
| |
|
|
| Scavroni,Joseane; Ferreira,Leonardo Cesar; Ferrarese,Maria de Lourdes Lucio; Ono,Elizabeth Orika; Rodrigues,João Domingos. |
| ABSTRACT ‘Rubi’ table grape has wide acceptance of the consumer market due to its affordable price and attractive color as a function of the accumulation of anthocyanins. However, environmental conditions do not always favor the suitable accumulation of these pigments, resulting in commercial devaluation and nutritional depreciation of fruits. Thus, the present study aimed to investigate the effect of application of different ethephon concentrations, associated or not with CaCl2 application, on the skin color and quality of ‘Rubi’ grape berries. First, specific traits of berries treated with 0, 200, 400, 600, 800 mg L-1 ethephon associated with 1.5% CaCl2 solution were evaluated and pH, titratable acidity (TA), soluble solids (SS), berry firmness, total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera L.; Ethylene; Calcium; Anthocyanins; Flavonols; Sugars; Phenylalanine ammonia lyase; Glutathione S-transferase. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100103 |
| |
| Registros recuperados: 50 | |
|
|
|
