Nuclear microsatellite data for Populus nigra and P. alba from Pogorzelica (middle Warta River), Poland

This is an updated version of the dataset, supplemented with win3 marker results and hybrid status information, and corrected geographic coordinates. It contains nuclear microsatellite data (PCR product lengths), win3 marker results, hybrid status, geographic coordinates, and size class information for Populus nigra L. (Pn) and Populus alba L. (Pa) individuals sampled in Pogorzelica, along the middle course of the Warta River in Poland.