THE SUITABILITY OF DIFFERENT STATISTICAL MEASURES TO ASSESS THE STABILITY OF RESISTANCE TO PHYTOPHTHORA INFESTANS (MONT.) DE BARY IN POTATO CULTIVARS IN FIELD CONDITIONS - T. Beata; F. Bogdan; P. Jarosław; M. Dorota; Zimnoch-Guzowska Ewa (Journal of Animal and Plant Sciences, 2017)