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A digital imaging technique to quantify the incidence of internal browning in potato (Solanum tuberosum) tubers

Harper, S.M. and Blamey, F.P.C. (2008) A digital imaging technique to quantify the incidence of internal browning in potato (Solanum tuberosum) tubers. Experimental Agriculture, 44 (2). pp. 157-166.

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Article Link(s): http://dx.doi.org/10.1017/S0014479708006315

Publisher URL: http://journals.cambridge.org/action/login

Abstract

Internal browning disorders, including brown fleck (BF), in potato (Solanum tuberosum) tubers greatly reduce tuber quality, but the causes are not well understood. This is due, in part, to the highly variable data provided by visual value-based rating systems. A digital imaging technique was developed to quantify accurately the incidence of internal browning in potato tubers. Images of tuber sections were scanned using a flatbed scanner and digitally enhanced to highlight tuber BF lesions, and the area of affected tissue calculated using pixel quantification software. Digital imaging allowed for the determination of previously unused indices of the incidence and severity of internal browning in potato tubers. Statistical analysis of the comparison between digitally derived and visual-rating BF data from a glasshouse experiment showed that digital data greatly improved the delineation of treatment effects. The F-test probability was further improved through square root or logarithmic data transformations of the digital data, but not of the visual-rating data. Data from a field experiment showed that the area of tuber affected by BF and the number of small BF lesions increased with time and with increase in tuber size. The results from this study indicate that digital imaging of internal browning disorders of potato tubers holds much promise in determining their causes that heretofore have proved elusive.

Item Type:Article
Additional Information:© Cambridge University Press.
Keywords:Internal browning disorders; brown fleck (BF); Solanum tuberosum; potato tubers; tuber quality; imaging technique; visual-rating data.
Subjects:Technology > Technology (General)
Plant pests and diseases > Individual or types of plants or trees > Potatoes
Deposited On:05 Feb 2009 06:14
Last Modified:05 Sep 2016 04:17

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