Near-infrared versus visual sorting of Fusarium-damaged kernels in winter wheat

Stephen N. Wegulo, Floyd E. Dowell

Research output: Contribution to journalArticle

19 Scopus citations


Fusarium head blight (scab) of wheat, caused by Fusarium graminearum, often results in shriveled and/or discolored kernels, which are referred to as Fusarium-damaged kernels (FDK). FDK is a major grain grading factor and therefore is routinely determined for purposes of quality assurance. Measurement of FDK is usually done visually. Visual sorting can be laborious and is subject to inconsistencies resulting from variability in intra-rater repeatability and/or inter-rater reliability. The ability of a single-kernel near-infrared (SKNIR) system to detect FDK was evaluated by comparing FDK sorted by the system to FDK sorted visually. Visual sorting was strongly correlated with sorting by the SKNIR system (0.89≤r≤0.91); however, the SKNIR system had a wider range of FDK detection and was more consistent. Compared with the SKNIR system, visual raters overestimated FDK in samples with a low percentage of Fusarium-damaged grain and underestimated FDK in samples with a high percentage of Fusarium-damaged grain.

Original languageEnglish (US)
Pages (from-to)1087-1089
Number of pages3
JournalCanadian Journal of Plant Science
Issue number6
StatePublished - Nov 2008


  • Fusarium head blight
  • Fusarium-damaged kernels
  • Single-kernel near-infrared
  • Wheat

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science
  • Horticulture

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