Grain yield of hybrids corn of domestic selection

On average, over the years of testing, the highest grain yield was provided by Mashuk 171, Mashuk 220 MV; Mashuk 300, Baikal; Mashuk 250SV, Baikal, Mashuk 170 MV and Mashuk 185 MV - 13.03 t/ha; 12.12; 11.94; 11.88; 11.24 and 10.09 t/ha, whereas Newton, Voronezh 160, Mashuk 168 and 175 MV Mashuk - 9.94; 9.13; 7.62 t/ha, respectively. The amount of biological yield of the studied hybrids was influenced to a greater extent by the water content of the cobs and the weight of 1000 grains. The highest weight of 1000 grains is from 305 to 281 grams. Mashuk 171 and Mashuk 220 MV hybrids differed, which formed the highest grain yield. In hybrids with lower grain productivity - Mashuk 175 MV, Mashuk 168, the mass of 1000 grains was in the range from 200 to 253 grams. The grain yield of the Mashuk 175 MV hybrid was 7.62 t/ha with a mass of 1000 grains of 200 grams. In terms of the content of dry matter, crude protein, starch and its collection, the Mashuk 250 SV hybrid differed favorably. It was followed by hybrids - Mashuk 171, Mashuk 185 MV, Baikal and Mashuk 220 MV. The intermediate position was occupied by Newton and Mashuk 300. In all other hybrids, the starch yield was 1.5-2.7 times lower compared to the Mashuk 250 SV hybrid.