|
|
|
| Registros recuperados: 52 | |
|
|
| Moreira, Rodrigo Amato; Universidade Federal de Lavras; Ramos, José Darlan; Universidade Federal de Lavras; Cruz, Maria do Céu Monteiro da; Universidade Federal dos Vales Jequitinhonha e Mucuri; Pantoja, Lílian de Araújo; Universidade Federal dos Vales Jequitinhonha e Mucuri; Santos, Alexandre Soares dos; Universidade Federal dos Vales Jequitinhonha e Mucuri. |
| This study was performed to verify the influence of the levels of leaf carbohydrates on the fruit quality of ‘Ponkan’ mandarin trees subjected to chemical thinning for three years using different Ethephon concentrations. Five concentrations of Ethephon were tested: 0, 200, 400, 600 and 800 mg L-1, which were applied during the stage of fruit development when fruits were from 25 to 30 mm in transverse diameter. The experimental design was in randomized blocks, with four blocks and four plants per plot. Interactions were observed between the concentrations of Ethephon and the year of assessment for the percentage of thinning, transverse diameter, longitudinal diameter, mass, soluble solids, acidity and the ratio of fruits. For the contents of carbohydrates,... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: 5.01.03.00-8 Citrus reticulata Blanco; Ethylene; Growth regulators Fitotecnia. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16219 |
| |
|
|
| Zanotti, Rafael Fonsêca; Dias, Denise Cunha Fernandes dos Santos; Barros, Raimundo Santos; DaMatta, Fábio Murilo; Oliveira, Glauter Lima. |
| This study aimed to investigate the effects of growth regulators on germination rates and biochemical compound concentrations in Carica papaya L. seeds (‘Formosa’ group). The seeds were harvested from fruits at maturation stages 3 and 5 (50 and 75% yellow fruit skin, respectively). The effects of 2-chloroethylphosphonic acid (CEPA), KNO3 and gibberellic acid (GA3)on seed germination, germination index speed, soluble sugars, starch, lipids, soluble proteins and total proteins of the papaya seeds were evaluated. The seeds from stage 5 showed a higher rate of germination 30 days after sowing than did the seeds from stage 3. Treatment with CEPA decreased seed germination, apparently due to decreased starch mobilization; the opposite response was observed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.06-7 Carica papaya L; CEPA; Ethylene; Gibberellins; KNO3; Reserve compounds. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18057 |
| |
|
|
| WEBER,ANDERSON; BRACKMANN,AURI; BOTH,VANDERLEI; PAVANELLO,ELIZANDRA P.; ANESE,ROGERIO O.; SCHORR,MÁRCIO R.W.. |
| This work aims at evaluate ethanol effect of acetaldehyde application in post-storage quality of 'Royal Gala' apples maintenance, and to compare them with consolidated storage techniques. Thus two experiments were performed during the years of 2008 and 2009. In the first experiment (2008), the application of ethanol, acetaldehyde or 1-MCP and ethylene scrubbing were tested. Fruits were stored in controlled atmosphere (CA) with 1.0kPa O2 and 2.0kPa CO2 at 0.5°C. In the second experiment (2009), the treatments tested were ethanol application combined or not with low relative humidity (LRH) and LRH alone. In this experiment, apples were stored in CA with 1.2kPa O2 + 2.5kPa CO2 at 0.5°C. After eight months of storage, 0.5 mL ethanol kg-1 apples month-1 or 0.25... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acetaldehyde; Anaerobic respiration; Ethylene; Quality. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100403 |
| |
|
|
| Mignolli,Francesco; Rojas,Graciela Beatriz; Vidoz,María Laura. |
| In many plant species, ethylene and gibberellins interact to regulate plant growth and development. In some cases, these hormones can act in a synergistic way whereas in others they can be antagonistic. To date, the control of hypocotyl elongation by ethylene and gibberellins has been poorly explored in tomato. In this paper, we report that, application of exogenous ethylene to tomato seedlings or high endogenous ethylene production, as in the epinastic mutant, strongly prevent the effect of gibberellic acid (GA3) application. Moreover, constitutive activation of gibberellin signal in a DELLA deficient mutant is not able to counteract the inhibitory effect of ethylene on hypocotyl elongation, suggesting that ethylene acts independently from DELLA-mediated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethylene; Gibberellins; Tomato; Hypocotyl elongation. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000200004 |
| |
|
| |
|
|
| Larotonda,Fábio Donato Soares; Genena,Aziza Kamal; Dantela,Daniela; Soares,Hugo Moreira; Laurindo,João Borges; Moreira,Regina Fátima Peralta Muniz; Ferreira,Sandra Regina Salvador. |
| The present work focuse on the impact of O2, CO2 and ethylene concentrations on ripening rate control of bananas as a contribution for the development of domestic equipments that could allow the user to drive the fruit shelf live. It represented the adjustment of metabolic activity rates in order to manage the maturity process. Ripening variables such as ethylene and CO2 concentrations and temperature were adjusted to accelerate or slow down the process, while the maturity degree was monitored through the physical and chemical parameters and sensorial analysis. Therefore, the objective of this work was to evaluate the influence of these parameters to manage the banana ripening. The optimum temperature was at 25 ºC of storage. The presence of oxygen, CO2... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Banana; Ripening; Trigger; Ethylene; CO2. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500021 |
| |
|
| |
|
|
| Azzolini,Marisa; Jacomino,Angelo Pedro; Bron,Ilana Urbano; Kluge,Ricardo Alfredo; Schiavinato,Marlene Aparecida. |
| Guava (Psidium guajava L.) is a tropical fruit exhibiting rapid post-harvest ripening. However, the physiological basis involved in the ripening process of guava is not totally clear, which makes it difficult to develop technologies to enhance fruit storability. Two experiments were carried out with the objective of determining the ripening behavior of 'Pedro Sato' guavas. In the first experiment, guava fruits at three maturity stages (I - dark green, II - light green and III - yellow-green) were stored at room temperature (23 ± 1°C and 85 ± 5 % RH). The respiratory rate, ethylene production, pulp and skin colours, and firmness were evaluated. In the second experiment, ethylene and 1-methylcyclopropene (1-MCP) were applied to guavas at the light green... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psidium guajava; Ethylene; 1-methylcyclopropene; Respiration. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000300004 |
| |
|
|
| Pereira,Luiz Filipe Protasio; Galvão,Rafaelo M.; Kobayashi,Adilson K.; Cação,Sandra Maria B.; Vieira,Luiz Gonzaga Esteves. |
| The phytohormone ethylene is involved in several physiological and developmental processes in higher plants, including ripening of fruits, abscission of organs and tissues, senescence, wound response as well as in other abiotic stresses. The enzyme 1-aminocyclopropane-1-carboxylate oxidase (ACO) catalyzes the last step of ethylene biosynthesis. The production of ethylene and the expression of a Coffea arabica ACO gene during the last stages of fruit maturation were investigated. A rapid increase of ethylene production at the green-yellow stage of fruit ripening, after the end of endosperm formation, and a decrease of ethylene production at the cherry stage indicates a climacteric phase during ripening. An ACC oxidase (Ca-ACO) from coffee fruit cDNA was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ACC oxidase; Climacteric; Coffee; Ethylene; Maturation. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000300002 |
| |
|
| |
|
|
| Fahl,Joel I.; Queiroz-Voltan,Rachel B.; Carelli,Maria Luiza C.; Schiavinato,Marlene A.; Prado,Ana K. S.; Souza,Júlio C.. |
| Three degrees of red mite infestation (Oligonychus ilicis McGregor) (Acari: Tetranychidae) were evaluated with regard to leaf anatomy, photosynthetic gas exchange and leaf ethylene production, in a commercial crop of approximately 12-year-old trees of Coffea arabica 'Catuaí Vermelho'. As a complementary study, foliar anatomy was also evaluated in a recuperated crop of C. arabica 'Mundo Novo' that had presented a high degree of red mite infestation during the dry period of the prior growing season. The red mite-infested leaves were bronze-coloured, with intensity proportional to the degree of internal damage. On feeding, the red mite introduces its stylet in the adaxial epidermis and, as a result, chloroplasts are destroyed in the feeding area. The number... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffee; Ethylene; Leaf structure damage; Photosynthetic gas exchange. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000100007 |
| |
|
| |
|
| |
|
|
| Borghetti,Fabian; Noda,Fabio Nakamura; Sá,Cezar Martins de. |
| Freshly harvested sunflower seeds (Helianthus annuus L., Asteraceae) present physiological dormancy localized at the embrionary axis which prevents germination at low temperatures. However, dormant embryos reach about 100 % germination when incubated with the phytohormone ethylene during imbibition. To examine whether proteinase activities are implicated in the breaking of dormancy by ethylene, dormant embryos were treated with the proteinase inhibitors leupeptin, E64 and the proteasome specific inhibitor clasto-lactacystin ß-lactone (lactacystin). A few embryos (< 10 %) germinated at 10 ºC in absence of ethylene but ethylene-treated embryos reached high germinability (~90 %) in the presence of leupeptin, E64, water and DMSO. On the other hand,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helianthus annuus; Dormancy; Ethylene; Lactacystin; Proteasome. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202002000200007 |
| |
|
| |
|
| |
|
|
| Bron,Ilana U.; Jacomino,Angelo P.. |
| The objective of this study was to determine how ripening physiology and quality of 'Golden' papaya are affected by maturity stages at harvest. Papayas were harvested at four maturity stages (Stage 0: totally green; Stage 1: up to 15% of yellow skin; Stage 2: 16-25% of yellow skin; Stage 3: 26-50% of yellow skin) and evaluated during ripening at 23ºC. Physical and physico-chemical (skin color, pulp firmness, soluble solids, titratable acidity, and ascorbic acid), physiological (respiratory activity and ethylene production), and sensorial (flavor, odor, firmness, and appearance) characteristics were evaluated. Regardless of maturity stages, fruit showed similar variation in respiration rate, exhibiting constant values after the 2nd day of storage at 23ºC... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Ethylene; Harvest time; Postharvest; Respiration. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000300005 |
| |
|
|
| Antoniolli,Lucimara R.; Benedetti,Benedito C.; Sigrist,José M.M.; Souza Filho,Men de Sá M.; Alves,Ricardo E.. |
| The effects of cut shape and temperature on the respiratory activity and ethylene synthesis of fresh-cut 'Pérola' pineapple were investigated. Two experiments were carried out. In the first, slices and chunks were placed in air-tight packages kept at 4 or 10ºC. Gas samples were taken every 2 h during 12 h and analysed by gas chromatography. In the second experiment, peeled fruits, slices and chunks were placed in air-tight glass jars connected to a flowboard installed in a cold room at 5 ± 1ºC. This system provided a continuous flow of humid and cold air during 14 d. Respiration rate was determined every 2 h, during the first 12 h, then daily for 10 d and on days 12 and 14. Ethylene synthesis was not detected during 12 h of evaluation. The lower... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Ananas comosus; Ethylene; Minimal processing; Respiration rate. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000300008 |
| |
|
|
| Moggia,Claudia; Hernández,Omar; Pereira,Marcia; A. Lobos,Gustavo; Yuri,José Antonio. |
| A study was carried out to determine the effects of two cooling systems and the application of 1-methylcyclopropene (1-MCP, SmartFreshTM) on the incidence of superficial scald in apples (Malus domestica Borkh.) cv. Granny Smith. Fruit were collected from a commercial orchard (Colbún, Maule Region, Chile) during 2004-2005 season. A completely randomized design was used in a 2 x 2 factorial arrangement, using cooling systems (normal and step-wise cooling) and application of 1-MCP (0 and 625 nL L-1 i.a.) as the main factors. Fruit from normal cooling were kept at 0 °C throughout the storage period (180 days). Step-wise cooling consisted of storing the fruit at 10 °C for 10 days; 4 °C for the next 20 days and 0 °C for the remaining 150 days. Every month,... |
| Tipo: Journal article |
Palavras-chave: Conjugated trienes; Antioxidants; -farnesene; 1-methylcyclopropene; Physiological disorder; Ethylene. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300011 |
| |
|
|
| Brito,Giovani Greigh de; Ferreira,Alexandre Cunha de Barcellos; Borin,Ana Luiza Dias Coelho; Morello,Camilo de Lelis. |
| Biotic and abiotic stresses can alter the hormone balance and trigger the activation of pathways involved in the cotton stress responses, resulting in the abscission of squares, flowers and young bolls and consequent reductions in the seed cotton yield and fiber yield. As part of the mechanism that primarily regulates the protective response of plants against stresses, ethylene is considered a key hormone involved in this response, and increased ethylene synthesis has been observed when plants are subjected to stress. Thus, the development of strategies aimed to mitigate their negative effects can reduce the shed rate of reproductive structures and positively impact cotton productivity. For this purpose, 1-methylcyclopropene (1-MCP), a compound that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AVG; 1-MCP; Ethylene; Gossypium hirsutum. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000100001 |
| |
| Registros recuperados: 52 | |
|
|
|
