Gabriel A. Schachtel, Biostatistik am FB09, Justus-Liebig University of Giessen, Germany;
Amos Dinoor, Department of Plant Pathology and Microbiology, the Robert H. Smith Faculty of Agriculture, Food and the Environment, Hebrew University of Jerusalem, Rehovot, Israel;
Antje Herrmann, Institute of Crop Science and Plant Breeding, Christian-Albrechts University of Kiel, Germany; and
Evsey Kosman, Institute for Cereal Crops Improvement, the George S. Wise Faculty of Life Sciences, Tel-Aviv University, Israel
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Accepted for publication 17 February 2012.
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 tau.ac.il/lifesci/departments/plant_s/members/kosman/VAT.html and at va-tipp.de.
© 2012 The American Phytopathological Society