The sensitivity ratio: A superior method to compare plant and pathogen screening tests

Lindsey Otto-Hanson, Kent M. Eskridge, James R. Steadman, Gabotepele Madisa

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

There are numerous plant disease-screening methods used to identify resistance in various crops. It is common practice to prefer the screening method with the smallest root mean square error (RMSE), least-significant difference (LSD), or coefficient of variation (CV). However, valid comparison based on the RMSE or LSD requires both methods to have the same scale while the CV is only applicable if the scales are proportional to each other. Most plant disease-screening methods developed for the same disease have different scales and, generally, it is not clear that the scales are proportional. The sensitivity ratio is a statistic specifically developed for comparing different measuring methods and is not based on any particular assumption about how the scales are related. We use the sensitivity ratio to compare two white mold [Sclerotinia sclerotiorum (Lib.) deBary] resistance screening methods on soybean [Glycine max (L.) Merr.], and two methods of evaluating pathogen isolate aggressiveness on dry bean (Phaseolus vulgaris L.). Our results suggest that the sensitivity ratio should be used when comparing plant disease-screening methods.

Original languageEnglish (US)
Pages (from-to)153-160
Number of pages8
JournalCrop Science
Volume49
Issue number1
DOIs
StatePublished - Jan 1 2009

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screening
pathogens
plant diseases and disorders
methodology
dry beans
Sclerotinia sclerotiorum
molds (fungi)
Phaseolus vulgaris
aggression
Glycine max
statistics
soybeans
crops

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

The sensitivity ratio : A superior method to compare plant and pathogen screening tests. / Otto-Hanson, Lindsey; Eskridge, Kent M.; Steadman, James R.; Madisa, Gabotepele.

In: Crop Science, Vol. 49, No. 1, 01.01.2009, p. 153-160.

Research output: Contribution to journalArticle

Otto-Hanson, Lindsey ; Eskridge, Kent M. ; Steadman, James R. ; Madisa, Gabotepele. / The sensitivity ratio : A superior method to compare plant and pathogen screening tests. In: Crop Science. 2009 ; Vol. 49, No. 1. pp. 153-160.
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