Correlation of grain protein content with utilitarian characters in breeding samples of winter wheat, created with the involvement of western european ecotypes

Aim. To establish correlation-regression models of dependences grain protein with the duration interphase period "flowering- maturity" and yield in elite numbers breeding nurseries. Methods. Field research was carried out at Institute Irrigated Agriculture National Academy Sciences 2019-2021. The object modern winter wheat varieties Institute; collection samples Western European ecotype that were introduced from France hybrids created their participation Research methods are field, laboratory, biochemical, selection-genetic, statistical. Results. nature manifestation trait "grain protein" selection selected hybrid populations ecotypes soft wheat, dependence protein, "flowering-maturity" established. "flowering-ripeness" ranged 45 to 52 days best numbers, each original combination had its own optimum, which determined high content grain. Conclusions. For population parental components contrasting vegetation, it is necessary develop a specific plan taking into account intra-population productivity, period.