Comprehensive evaluation of virulence and resistance data: A new analysis tool

Gabriel A. Schachtel, Amos Dinoor, Antje Herrmann, Evsey Kosman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Scopus citations


The functioning and features of the new software package VAT (Virulence Analysis Tool) are introduced. VAT provides a range of methods for the analysis of plant pathosystems. The techniques are applicable to other binary data sets that are organized in large two-way tables, e.g., molecular marker data. The main features are data entry, descriptive tools, and inference statistics by resampling. About 50 well-established or newly developed indices allow a detailed diversity analysis of sexually and asexually reproducing populations. VAT facilitates a comprehensive, effective, and logically consistent evaluation and presentation of virulence and resistance data. A translation option simplifies the comparison of results from differently coded pathotypes. The software package comes with a detailed manual and is freely available on the internet at html and at

Original languageEnglish
Pages (from-to)1060-1063
Number of pages4
JournalPlant Disease
Issue number7
StatePublished - Jul 2012


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