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Potato cultivars Gwiazda and Tajfun show an improved tolerance to drought. Two‐month‐old well‐watered plants of the four studied cultivars were subjected to water stress. Plants before the application of water stress (upper panel) and after 6, 10 and 13 days without watering are shown (lower panels). After 13 days of drought, the plants were rewatered. The plants are shown three days after rewatering (the lowest panel).
