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Sap properties and alk(en)ylresorcinol concentrations in Australian-grown mangoes.

Hassan, M.K. and Irving, D.E. and Dann, E.K. and Coates, L.M. and Hofman, P.J. (2009) Sap properties and alk(en)ylresorcinol concentrations in Australian-grown mangoes. Annals of Applied Biology, 154 (3). pp. 419-427.

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Article Link(s): http://dx.doi.org/10.1111/j.1744-7348.2008.00313.x

Publisher URL: http://www3.interscience.wiley.com/cgi-bin/home

Abstract

Physical and chemical properties of sap and sap concentrations of constitutive alk(en)ylresorcinols were determined in several varieties of mango grown in different locations in Queensland, Australia, over two consecutive cropping seasons. Sap weight from individual fruit, sap pH, percentage of non-aqueous sap and concentrations of constitutive alk(en)ylresorcinols (5-n-heptadecenylresorcinol and 5-n-pentadecylresorcinol) in sap varied significantly among the varieties. 'Calypso', 'Keitt', 'Kensington Pride' and 'Celebration' had the greatest proportion of non-aqueous sap, whereas 'Nam Doc Mai' had the least. The highest concentrations of 5-n-heptadecenylresorcinol were found in the sap of 'Kensington Pride', and the lowest in 'Honey Gold' and 'Nam Doc Mai'. Highest concentrations of 5-n-pentadecylresorcinol were found in sap of 'Calypso' and 'Celebration', and the lowest levels were in 'Honey Gold' and 'Nam Doc Mai'. There was a direct relationship between the percentage of non-aqueous sap and the concentrations of alk(en)ylresorcinols (r(2) = 0.77 for 5-n-heptadecenylresorcinol, and r(2) = 0.87 for 5-n-pentadecylresorcinol). The alk(en)ylresorcinols were distributed mainly in the upper non-aqueous phase of 'Kensington Pride' sap. Growing location also had significant effects on the composition of mango sap but the effects appeared to be related to differences in maturity. Sap removal is necessary to prevent sapburn, but considerable quantities of alk(en)ylresorcinols that assist in protecting the harvested fruit from anthracnose disease are also removed.

Item Type:Article
Additional Information:© 2009 The Authors. © John Wiley & Sons, Inc.
Keywords:Alk(en)ylresorcinols; anthracnose; Colletotrichum gloeosporioides; disease resistance; growing location; Mangifera indica; maturity; sap; fruit quality; cultivars.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection
Science > Biology > Biochemistry
Plant culture > Fruit and fruit culture > Culture of individual fruits or types of fruit > Stonefruit
Deposited On:19 Jul 2009 23:37
Last Modified:19 Apr 2011 02:49

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