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Non-Invasive Spectral Phenotyping Methods can Improve and Accelerate Cercospora Disease Scoring in Sugar Beet Breeding

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  • Marcus Jansen

    ()
    (Forschungszentrum Jülich GmbH, Institut für Bio- und Geowissenschaften, IBG-2, Pflanzenwissenschaften, Wilhelm-Johnen-Straße, Jülich 52425, Germany)

  • Sergej Bergsträsser

    ()
    (Forschungszentrum Jülich GmbH, Institut für Bio- und Geowissenschaften, IBG-2, Pflanzenwissenschaften, Wilhelm-Johnen-Straße, Jülich 52425, Germany)

  • Simone Schmittgen

    ()
    (Forschungszentrum Jülich GmbH, Institut für Bio- und Geowissenschaften, IBG-2, Pflanzenwissenschaften, Wilhelm-Johnen-Straße, Jülich 52425, Germany)

  • Mark Müller-Linow

    ()
    (Forschungszentrum Jülich GmbH, Institut für Bio- und Geowissenschaften, IBG-2, Pflanzenwissenschaften, Wilhelm-Johnen-Straße, Jülich 52425, Germany)

  • Uwe Rascher

    ()
    (Forschungszentrum Jülich GmbH, Institut für Bio- und Geowissenschaften, IBG-2, Pflanzenwissenschaften, Wilhelm-Johnen-Straße, Jülich 52425, Germany
    Rheinische Friedrich-Wilhelms-Universität Bonn, Regina-Pacis-Weg 3, Bonn 53113, Germany)

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    Abstract

    Breeding for Cercospora resistant sugar beet cultivars requires field experiments for testing resistance levels of candidate genotypes in conditions that are close to agricultural cultivation. Non-invasive spectral phenotyping methods can support and accelerate resistance rating and thereby speed up breeding process. In a case study, experimental field plots with strongly infected beet genotypes of different resistance levels were measured with two different spectrometers. Vegetation indices were calculated from measured wavelength signature to determine leaf physiological status, e.g., greenness with the Normalized Differenced Vegetation Index (NDVI), leaf water content with the Leaf Water Index (LWI) and Cercospora disease severity with the Cercospora Leaf Spot Index (CLSI). Indices values correlated significantly with visually scored disease severity, thus connecting the classical breeders’ scoring approach with advanced non-invasive technology.

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    Bibliographic Info

    Article provided by MDPI, Open Access Journal in its journal Agriculture.

    Volume (Year): 4 (2014)
    Issue (Month): 2 (May)
    Pages: 147-158

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    Handle: RePEc:gam:jagris:v:4:y:2014:i:2:p:147-158:d:35893

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    Related research

    Keywords: phenotyping; vegetation index; disease scoring; Cercospora beticola ; resistance breeding;

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