When creating new varieties of bread wheat, first of all, the correct selection of donor varieties for hybridization depends on the success of the selection process. In the selection of donor varieties, great attention is paid to the fact that some of the expected hybrid characteristics are predominant in some donor varieties in order to obtain the most appropriate forms. The choice of donor varieties may vary depending on the direction of selection. For example, in order to create varieties resistant to early ripening and rust diseases, donor varieties are selected according to the shortness of development phases and resistance to disease.