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Determination of optimum maturity stages of mangoes using fruit spectral signatures

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conference contribution
posted on 06.12.2017, 00:00 by Phul SubediPhul Subedi, Kerry WalshKerry Walsh, P Purdy
A purpose designed hand-held spectroscope ('Nirvana', Integrated Spectronics) was used to assess mango fruit pigmentation (flesh and skin) and flesh dry matter content. Fruit dry matter content and flesh colour was assessed of fruit on the tree, and used as indices of fruit maturity. Dry matter of fruit at harvest was also closely related to total soluble solids of fully ripe fruit, and thus eating quality. The calibration model was robust across growing regions for dry matter (R > 0.96 with RMSECV < 0.6 % DM), but regional models were required for flesh colour. The units were used to: (i) non-invasively monitor fruit on tree at weekly intervals from stone hardening stage, allowing a gauge of time to harvest; (ii) describe variation in fruit maturity in relation to canopy architecture, and thus inform selective picking procedures; (iii) assess average fruit maturity across blocks, allowing maturity zoning across the production area; (iv) relate dry matter content of hard green fruit to later ripening behaviour and eating quality (Brix and flavour).

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Parent Title

IX International Mango Symposium 2010, Sanya, Hainan Island, China, 8-12 April 2010

Start Page

1

End Page

12

Number of Pages

12

Start Date

01/01/2010

Finish Date

01/01/2010

ISBN-13

9789066054387

Location

Sanya, Hainan Island, China

Publisher

International Society for Horticultural Science

Place of Publication

Belgium

Peer Reviewed

No

Open Access

No

External Author Affiliations

Centre for Plant and Water Science; Institute for Resource Industries and Sustainability (IRIS); Integrated Spectronics, Sydney;

Era Eligible

No

Name of Conference

International Mango Symposium