EN
Blue dun colour with no white markings represents a trait of the Polish Konik horse breed. However, in spite of long-term selection, non-blue-dun individuals, and those with the markings have still been appearing. The aim of this study was to analyse the genetic structure of the Polish Konik population with respect to coat colour and, on this basis, to propose improved methods of selection. The material comprised Polish Konik horses registered in all eight volumes of the studbook published so far.