Yielding capacity and flour-milling properties of spring bread wheat varieties depending on growing environmental conditions

Purpose. To determine the dependence of yield and flour-milling properties of new spring bread wheat varie­ties of Myronivka breeding on different growing season conditions. Methods. During 2017–2019, twelve spring bread wheat varieties were studied in the conditions of the V. M. Remeslo Myronivka Institute of Wheat of NAAS. Grain and flour qua­lity indicators were determined according to conventional methods. Results. It was found that weather conditions in 2019 were more favorable for realizing the yield potential of spring wheat varieties, but they had a nega­tive impact on quality indicators. By exceeding on 30–40% the standard ‘Elehiia myronivska’, the varieties – ‘Bozhena’ (4.23 t/ha), ‘Oksamyt myronivskyi’ (4.28 t/ha), ‘MIP Svitlana’ (4.31 t/ha), and ‘Dubravka’ (4.62 t/ha) were selected in terms of yield. The varieties ‘Simkoda myronivska’, ‘MIP Zlata’, ‘Bozhena’, ‘MIP Vizerunok’, and ‘MIP Oleksandra’ were singled out by the combination of high physical indicators of grain quality. The varieties ‘Simkoda myronivska’, ‘Oksamyt myronivskyi’, and ‘Panianka’ were distinguished by complex of the highest flour quality indicators. The varieties being the most stable in terms of individual characters were identified. These were ‘Simkoda myronivska’, ‘MIP Zlata’, ‘Bozhena’, ‘Oksamyt myronivskyi’, ‘MIP Svitlana’, and ‘MIP Oleksandra’ by yiel­ding capacity. According to quality indicators, in particular, by 1000 kernel weight, varieties ‘Simkoda myronivska’, ‘MIP Vizerunok’ were distinguished; high scores for grain vitreousness were in most varieties, except for ‘Elehiia myroniv­ska’, ‘Simkoda myronivska’, and ‘MIP Oleksandra’; according to test weight and flour yield, all varieties had high rates; according to the protein content, the variety ‘Oksamyt myronivskyi’ was distinguished; varieties ‘Dubravka’ and ‘MIP Oleksandra’ by wet gluten content. The ANOVA established that the most dependence on weather conditions was revealed for such parameters as 1000 kernel weight (part of influence 83.7%), protein content (76.7%), sedimentation value (66.7%), flour yield (52.6%), gluten deformation index (46.0%), and wet gluten content (42.6%); the most dependence on the interaction of factors year  variety was revealed for yielding capacity (52.3%), the grain vitreousness (50.5%), and the test weight (36.5%). A reliable effect of the factor variety on yield (34.9%) and all investigated quality indicators (5.1–35.1%) was revealed. Conclusions. It is expedient to use the varieties listed above as sources of certain traits for the creation of new high-yielding and high-quality varieties for different areas of use.