Influence of the elements of technology on seed yield of lines — parental components of corn hybrids under drip irrigation conditions

Goal. To determine the influence of plant density and treatment with preparation Retenho® on weight 1000 grains seed yield lines — parental components corn hybrids under irrigation conditions. Methods. The research was carried out using field (determining components), laboratory (weight grains), analytical mathematical-statistical methods. Results. maximum mid-early line DK 247 average at a factor 90,000 plants/ha 4.70 t/ha, medium-ripe 205710 80,000 5.42 mid-late 445 for 70 thousand 7.08 t/ha seeds. most productive parent component Vira, Hileia, Arabat reacts negatively to crops. 100,000 decreased by 1.03 or 15% compared an optimal 70,000 plants/ha. When plants were treated Retenho®, increased 10–12 g, 3.7–5.4% untreated control. Treatment growth-regulating fungicide contributed increase in 0.29–0.41 6.3–7.9%. Sowing affected grains: over years (252 g) obtained 60 all lines. Conclusions. trait «weight grains» FAO group, sowing density, Retenho®. Each has seeding obtain highest maintaining feeding area one plant. observed 90 4.94 t/ha. In —parent formed 5.61 showed