Comparative indexing of early-maturing corn hybrids in multi-environment trial

The article shows the results of a multi-environment trial which was conducted in 2022 to determine adaptability corn hybrids and identify genotypes are better choose for short growing season. Ten new early-maturing (FAO 130-150) were studied 6 plant breeding organisations – ecological sites 4 soil-climatic zones Russia such as Central Black Earth region, North Caucasus, Urals, West Siberia. evaluated by plasticity (b i ), stability (σ d 2 ) selection indices: value cultivar (S vc index svi ). Nalchik (I j = +1.51), Belgorod +0.18) Voronezh +0.04) had favourable environmental conditions, unfavourable environments Chelyabinsk -1.09), Omsk -0.56) Pyatigorsk -0.08). Hybrid 140/26 highest grain yield (6.50 t/ha) on average, it exceeded best standard 1.15 t/ha. 140-28 mean (7.66 140/24 (7.65 under hybrid 100/28 (5.42 environments. Hybrids 100/24 (18.7 %), 140/25 (19.0 100/27 (20.5 %) lowest moisture at harvest. 1.82, σ 0.08), 140/28 1.54, 0.09), 100/26 1.45, 0.17) with high recommended grow intensive conditions. It shown that application technique evaluating indices makes possible regionally oriented genotypes. is vic 8.44) и 8.26), an optimal balance stability, harvest, conditions