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Figure 2. Outline of crossing. A. Schematic representation of the pollination procedure. A pistil of the potato flower was pollinated with pollen prepared from another flower. B. Process of fruit development. Pictures of the fruits at 6 to 30 days after pollination. C. Photograph of a potato fruit and seeds. From the left, a whole fruit, a cross section of a fruit, and seeds obtained. Bars indicate 1 cm.