Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure

The effects of fruit canopy position on chemical composition (SSC, ascorbic acid, carotenoid concentrations) and colour development of starfruit (Averrhoa carambola) under netted structure, were determined. The treatments consisted of three canopy positions: fruits facing the morning sun, fruits fac...

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Main Authors: Mahmood, Zabedah, Abdullah, Mohd Yusoff, Abd Halim, Mohd Ridzwan, Ramlan, Mohd Fauzi, Hassan, Siti Aishah
Format: Article
Language:English
Published: Malaysian Agricultural Research and Development Institute (MARDI) 2009
Online Access:http://psasir.upm.edu.my/id/eprint/14379/1/Effects%20of%20fruit%20canopy%20position%20on%20chemical%20composition%20and%20fruit%20colour%20development%20of%20starfruit%20cultivated%20under%20netted%20structure.pdf
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author Mahmood, Zabedah
Abdullah, Mohd Yusoff
Abd Halim, Mohd Ridzwan
Ramlan, Mohd Fauzi
Hassan, Siti Aishah
author_facet Mahmood, Zabedah
Abdullah, Mohd Yusoff
Abd Halim, Mohd Ridzwan
Ramlan, Mohd Fauzi
Hassan, Siti Aishah
author_sort Mahmood, Zabedah
collection UPM
description The effects of fruit canopy position on chemical composition (SSC, ascorbic acid, carotenoid concentrations) and colour development of starfruit (Averrhoa carambola) under netted structure, were determined. The treatments consisted of three canopy positions: fruits facing the morning sun, fruits facing the evening sun and fruits under the canopy. The fruit canopy position did not significantly (p <0.05) influence the fruit SSC. Exposure to irradiance increased the ascorbic acid concentration of starfruit. The carotenoid concentration increased with heat units and exposure to irradiance (PAR) indicating that irradiance might play an important role in the synthesis of carotenoid. Excessive irradiance (exposed fruits) resulted in lower L* value, and darker green fruits with less shine. Fruits protected under the plant canopy had better cosmetic appearance and are suitable for export market.
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spelling upm.eprints-143792016-10-12T05:16:51Z http://psasir.upm.edu.my/id/eprint/14379/ Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure Mahmood, Zabedah Abdullah, Mohd Yusoff Abd Halim, Mohd Ridzwan Ramlan, Mohd Fauzi Hassan, Siti Aishah The effects of fruit canopy position on chemical composition (SSC, ascorbic acid, carotenoid concentrations) and colour development of starfruit (Averrhoa carambola) under netted structure, were determined. The treatments consisted of three canopy positions: fruits facing the morning sun, fruits facing the evening sun and fruits under the canopy. The fruit canopy position did not significantly (p <0.05) influence the fruit SSC. Exposure to irradiance increased the ascorbic acid concentration of starfruit. The carotenoid concentration increased with heat units and exposure to irradiance (PAR) indicating that irradiance might play an important role in the synthesis of carotenoid. Excessive irradiance (exposed fruits) resulted in lower L* value, and darker green fruits with less shine. Fruits protected under the plant canopy had better cosmetic appearance and are suitable for export market. Malaysian Agricultural Research and Development Institute (MARDI) 2009 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/14379/1/Effects%20of%20fruit%20canopy%20position%20on%20chemical%20composition%20and%20fruit%20colour%20development%20of%20starfruit%20cultivated%20under%20netted%20structure.pdf Mahmood, Zabedah and Abdullah, Mohd Yusoff and Abd Halim, Mohd Ridzwan and Ramlan, Mohd Fauzi and Hassan, Siti Aishah (2009) Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure. Journal of Tropical Agriculture and Food Science, 37 (2). pp. 135-142. ISSN 1394-9829; ESSN: 2289-9650 http://ejtafs.mardi.gov.my/index.php/publication/issues/archive/36-2009/volume-37-no2/85-370201
spellingShingle Mahmood, Zabedah
Abdullah, Mohd Yusoff
Abd Halim, Mohd Ridzwan
Ramlan, Mohd Fauzi
Hassan, Siti Aishah
Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure
title Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure
title_full Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure
title_fullStr Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure
title_full_unstemmed Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure
title_short Effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure
title_sort effects of fruit canopy position on chemical composition and fruit colour development of starfruit cultivated under netted structure
url http://psasir.upm.edu.my/id/eprint/14379/1/Effects%20of%20fruit%20canopy%20position%20on%20chemical%20composition%20and%20fruit%20colour%20development%20of%20starfruit%20cultivated%20under%20netted%20structure.pdf
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