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| Brandão,Isabel Rodrigues; Silva,Dayane Meireles da; Souza,Kamila Rezende Dázio de; Boas,Lissa Vasconcellos Vilas; Santos,Meline de Oliveira; Silva,Fábio Moreira da; Alves,Jose Donizeti. |
| ABSTRACT In order to investigate the existence of a possible abscission zone in the binding region between the peduncle and the coffee fruit, as well as the biochemical events involved in fruit ripening, we studied peduncles and fruits of Coffea arabica L. cv. “Icatu amarelo”. Coffee fruits were harvested at different maturation stages by using specific intervals of detachment force. It was observed a breakdown in the cells of the connecting region between peduncles and fruits throughout the maturation process. This disruption is probably caused by increased activity of the cell wall-loosening enzymes (polygalacturonase and cellulase) as well as by higher levels of lipid peroxidation in the final maturation stages. In general, physiological differences... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Icatu amarelo; Mechanized harvesting; Degrading enzyme; Oxidative stress. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000400386 |
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| Kleinowski,Alítcia Moraes; Brandão,Isabel Rodrigues; Einhardt,Andersom Milech; Ribeiro,Márcia Vaz; Peters,José Antonio; Braga,Eugenia Jacira Bolacel. |
| The aim of the present study was to investigate the influence of tyrosine on the in vitro growth and the production of the betacyanin pigment in Alternanthera philoxeroides and A. tenella. Nodal segments were inoculated in MS medium containing different concentrations of tyrosine (0, 25, 50 and 75 μM), and the number of sprouts and buds, height, root length, fresh matter of shoots and roots and betacyanin content were evaluated. In A. philoxeroides , the highest production of betacyanin (51.30 mg 100 g-1 FM) was in the stems with the addition of approximately 45 μM tyrosine, while the increase in the leaves was proportional to the tyrosine concentration, and the best average was obtained with a tyrosine concentration of 75 μM (15.32 mg 100 g-1 FM). Higher... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Betacyanin; Elicitors; In vitro propagation; Alligator weed; Joy weed. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200014 |
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