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Comparison of resistance evaluation in potato variety assessment

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Summary

Results of varietal assessment in France, Germany, Great Britain. The Netherlands and Poland have been compared for two characters: resistance to potato virus Y (PVY) and tuber resistance toPhytophthora infestans. In total 75 varieties were evaluated in more than one country. All evaluations were expressed or could be transformed into a 9-grade resistance scale. Evaluations did differ considerably due to two main reasons: countries differed in severity of evaluation (mean resistance level ascribed to varieties) and the relative resistance level ascribed to individual varieties depended on the country. Differences between countries in severity of the evaluation could exceed two grades in resistance to PVY and three grades in tuber resistance toP. infestans. In the relative resistance ascribed to individual varieties the differences between countries were larger, reaching up to 6 grades in evaluation of resistance to PVY and up to 8 grades in evaluation of tuber resistance toP. infestans. To achieve consistent variety assessment results from different countries, it will be necessary to use agreed standard varieties and more consistent evaluation methods.

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Authors and Affiliations

  1. Plant Breeding and Acclimatization Institute, Młochów Research Center, 05-831, Młochów, Poland

    K. M. Świeżyński, M. Chrzanowska, L. Domański & E. Zimnoch-Guzowska

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  1. K. M. Świeżyński
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  2. M. Chrzanowska
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  3. L. Domański
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  4. E. Zimnoch-Guzowska
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Professor Dr. K.M. Świeżyński passed away on 27th July 2000

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Świeżyński, K.M., Chrzanowska, M., Domański, L. et al. Comparison of resistance evaluation in potato variety assessment. Potato Res 44, 25–31 (2001). https://doi.org/10.1007/BF02360284

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