Relationships Between Internal Brown Spot and Skin Roughness in Potato Tubers Under Field Conditions

  • Francesco Raimo
  • Alfonso Pentangelo
  • Catello Pane
  • Bruno Parisi
  • Giuseppe Mandolino
Article

Abstract

Internal brown spot (IBS) is a physiological disorder of potato tubers consisting in the appearance of punctiform and/or enlarged rust-coloured necrosis in parenchymal tissues. The IBS disorder leads to important economic impact and yield depreciation since quality, sensory and processing features of tubers may be highly compromised. Nowadays, the causes of IBS are still debated; however, the combination of several genetic, nutritional and environmental factors seems to have a relevant role in modulation of symptoms. In the current work, IBS occurrences together with skin roughness were monitored in potato tubers of different cultivars harvested in 2 years of field trials under different field conditions (environment, irrigation rate). All three IBS-susceptible cultivars used, Luminella, Majestic and Ricciona di Napoli, showed significant IBS incidence. Importantly, incidence and severity increased with tuber size. Ricciona di Napoli was the cultivar most affected by both IBS and skin roughness. Findings showed a strong positive correlation between IBS and skin roughness, suggesting that suboptimal growth conditions may have affected both physiological disorders. The association between IBS and potato skin roughness may provide new insights for the implementation of non-destructive IBS detection in potatoes.

Keywords

Abiotic stress Field trials IBS symptoms Physiological disorder Russeting Solanum tuberosum 

Notes

Acknowledgements

This work was supported by the F.E.A.S.R. European funding program (P.S.R. Campania 2007/2013, Measure 124) with the project “Progetto di valorizzazione della patata Ricciona di Napoli - Pat.Ri.Na”.

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Copyright information

© European Association for Potato Research 2018

Authors and Affiliations

  • Francesco Raimo
    • 1
  • Alfonso Pentangelo
    • 2
  • Catello Pane
    • 2
  • Bruno Parisi
    • 3
  • Giuseppe Mandolino
    • 3
  1. 1.Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria, Centro di ricerca Cerealicoltura e Colture IndustrialiCasertaItaly
  2. 2.Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria, Centro di ricerca Orticoltura e FlorovivaismoPontecagnano-FaianoItaly
  3. 3.Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria, Centro di ricerca Cerealicoltura e Colture IndustrialiBolognaItaly

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