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Título

Assessment of watercore development in apples with MRI: Effect of fruit location in the canopy

Autor Melado-Herreros, Ángela; Muñoz-García, Miguel Angel; Blanco Braña, Álvaro ; Val Falcón, Jesús ; Fernández-Valle, Encarnación; Barreiro Elorza, Pilar
Palabras clave MRI
Internal fruit quality
Sugar content
Non-destructive
3D segmentation
Fecha de publicación dic-2013
Citación Melado-Herreros A, Muñoz-García MA, Blanco A, Val J, Fernández-Valle E, Barreiro P. Assessment of watercore development in apples with MRI: Effect of fruit location in the canopy. Postharvest Biology and Technology 86: 125-133 (2013)
ResumenWatercore distribution inside apple fruit (block or radial), and its incidence (% of tissue) were related to the effect of solar radiation inside the canopy as measured by a set of low-cost irradiation sensors. 221 samples were harvested in two seasons from the top and the bottom of the canopy and submitted to the non-invasive and non-destructive technique of magnetic resonance imaging (MRI) in order to obtain 20 inner tomography slices from each fruit and analyze the damaged areas using an interactive 3D segmentation method. The number of fruit corresponding to each type of damage and the relevant percentage were calculated and it was found that apples from the top of the tree were mainly of the radial type (84%) and had more watercore (approx. 5% more) than apples from the bottom (65% radial). From the image segmentation, the Euler number, a morphometric parameter, was extracted from the segmented images and related to the type of watercore symptoms. Apples with block watercore were grouped in Euler numbers between −400 and 400 with a small evolution. For apples with radial development, the Euler number was highly negative: up to −1439. Significant differences were also found regarding sugar composition, with higher fructose and total sugar contents in apples from the upper canopy, compared to those in the lower canopy location. In the seasons studied (2011 and 2012), significantly higher sorbitol and lower sucrose and fructose contents were found in watercore-affected tissue compared to the healthy tissue of affected apples and also compared to healthy apples.
Descripción 27 Pags., 7 Figs., 7 Tabls. The definitive version is available at: http://www.sciencedirect.com/science/journal/09255214
Versión del editorhttp://dx.doi.org/10.1016/j.postharvbio.2013.06.030
URI http://hdl.handle.net/10261/80922
DOI10.1016/j.postharvbio.2013.06.030
ISSN0925-5214
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