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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/4857

Title: Comparing the physiological changes in apples and pears during shelf-life measured by fluorescence imaging
Authors: HUYBRECHTS, Christy
VALCKE, Roland
Issue Date: 2005
Citation: Mencarelli, F & Tonutti, P (Ed.) PROCEEDINGS OF THE 5TH INTERNATIONAL POSTHARVEST SYMPOSIUM: vol. 1-3. p. 73-78.
Series/Report: ACTA HORTICULTURAE, 682
Abstract: The physiological state of plants during their development can be determined using chlorophyll fluorescence, induced after excitation with UV-, blue-, green-, orange- or red-light. During fruit ripening and senescence, two major phenomena affect the level of chlorophyll fluorescence emission: (i) a loss of photosynthetic competence per unit chlorophyll leading to reduced PSII activity and (ii) a decrease in chlorophyll content. In this paper, chlorophyll fluorescence characteristics of some physiological changes in 'Conference' pears (Pyrus communis L.) and 'Jonagold' apples (Malus domestica Borkh.) during a shelf-life experiment are studied using the PEA (Plant Efficiency Analyser) and a custom build fluorescence imaging system (FIS). The apples and pears were bought in a local store and were followed during several days in order to detect physiological changes during this period. The results show that chlorophyll fluorescence imaging is more reliable compared to a point measuring technique such as the PEA and can be used to predict the shelf-life quality of 'Conference' pears and 'Jonagold' apples.
URI: http://hdl.handle.net/1942/4857
ISI #: 000232014700002
ISBN: 90-6605-648-7
ISSN: 0567-7572
Category: C1
Type: Proceedings Paper
Validation: ecoom, 2006
Appears in Collections: Research publications

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