A new variety of bread winter wheat Trudivnytsia myronivska

Purpose. To highlight the genetic origin and to characterize agronomic traits of the new bread winter wheat variety Trudіvnytsia myronivska, as well as to determine its response to some elements of cropping practices. Methods. Studying the new line in various stages of the selection process was carried out during 2003–2017 on the fields of breeding crop rotation of the Myronivka Institute of Wheat (MIW), in particular, in 2013-2015 the variety Trudіvnytsia myronivska was studied in competitive testing, in 2014–2017 at the laboratory of agricultural technologies of MIW to determine the response to the predecessors (green manure, winter rape, peas and silage maize) and sowing dates (on September 08, 17, 25 and October 04). During 2016 and 2017, the variety was tested in the institutions of the Ukrainian Institute for Plant Variety Examination (UIPVE). Results. The variety Trudіvnytsia myronivska has been created by complex multi-step hybridization from crossing (in 2003) the high-quality line Erythrospermum 53686 with the high-resistant variety Kryzhynka. The genetic make-up of the new variety is based on the repeated use in hybrid combinations of such outstanding varieties as Myronivska 808, Ukrainka 0246, Bezostaya 1 and Myronivska 264. In the variety Trudіvnytsia myronivska there is wheat-rye translocation (WRT) IBL/IRS. The botanical variety is lutescens. Examinations at the MIW and UIPVE found that the variety Trudіvnytsia myronivska is highly frost resistant, lodging and shattering resistant, drought tolerant, and disease resistant. The variety has high potential productivity (10.4 t/ha). In terms of grain quality it is valuable wheat. Green manure and peas are the best predecessors for the variety. The response to the sowing date is neutral. Conclusions. Trudivnytsia myronivska has inherited high potential productivity and adaptability from her “famous” ancestors (Myronivska 808, Ukrainka 0246, and Bezostaya 1); this determined its balance in terms of complex of agronomic traits. Having the WRT 1BL/1RS increases the adaptability of the variety during crop formation not only on various sowing dates, but also in various ecological zones (Steppe, Forest-Steppe, Polissia) in which it is recommended for cultivation.