The assessment results of 106 samples of spring barley from the collection of the N.I. Vavilov AllRussian Institute of Plant Genetic Resources are presented. The effect of morphometric parameters of their productivity elements on the yield formation and the degree of their correlation is shown. The studies were conducted in 2016–2018 in a collection nursery in the forest-steppe zone of Kemerovo region. During the years of research, the meteorological conditions of the growing season were characterized by an acute moisture defi cit in May and June in 2016 and 2017 (hydrothermal coeffi cient HTC from 0.37 to 0.50) and then by excessive moisture level in 2018 (in June HTC = 2.41, in July HTC = 1.92). A signifi cant excess of yield compared to the standard Biome variety was found in two samples of spring barley from the Czech Republic: Jubilant and Svit (80.33 g) and a sample from Kazakhstan Ilek 1 (103.3 g). Eight spring barley samples showed excess of yield from a unit area compared to the standard variety from 26.6% to 63.0%. As for the complex of valuable features, the following varieties were revealed: Svit (Czech Republic), Azov (Rostov Region), Ilek 1, Ilek 16 (Kazakhstan), Shukran (Krasnodar). The closest relationship was established between the yield of spring barley and the morphometric indicators of the elements of its productivity: the number of productive stems per unit area (r = 0.8728), the biomass of the root system (r = 0.3598), the mass of 1000 grains (r = 0.3273), spike productivity (r = 0.3820). Varieties with the highest degree of economically valuable traits, selected from hybrid populations of VIR, are advisable to use for the breeding process in the soil and climatic conditions of Kemerovo region.

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The works presents the results of studying 165 specimen of spring oats from the world collection The N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources. The research was conducted in the northern forest-steppe zone of Western Siberia in 2014-2016. The soil on which the research was done can be characterized as leached chernozem, heavy loam by texture and particle size distribution, of medium capacity. The content of humus equals 7.8%, reaction of soil solution is close to neutral, рН is 6.0. In the horizon of 0-40 cm the content of N-NO3 is 35.4mg/kg, P2O5 – 122 mg/kg, K2O – 98 mg/kg. An assessment is given to spring oat specimen by the parameters of ecological plasticity bi and yield stability Si2 . The research was conducted in the conditions characterized in accordance with the index of environmental conditions Ij. The most favourable conditions developed in 2016, when the environment index Ij equaled 109.2. Adverse conditions were identifi ed in 2014, when Ij equaled -46.25, and in 2015, when Ij equaled -62.99. By the results of the dispersion analysis the dominating infl uence of environmental conditions on the yield of spring oat specimen is established at 85.3%, the share of genotype infl uence is 2.6%. Eight specimen of spring oats proved to exceed Creole standard variety by yield with the trait variability being from 29.3% to 87.1%. Sources for creation of intensive type varieties, with high responsiveness to favorable conditions for growth and development are identifi ed: IL 86-1158 (to 14316, the USA), Jumbo (to 14702, Germany), Hamilton (to 14761, the USA), Talisman (to 14785, Russia), Omikho (to 14827, Russia), OA 269 (to 14992, Canada), Stayer (to 15181, Russia), Eclipse (to 15187, Russia). High-yielding genotypes which react to environmental conditions to a medium degree (bi is nearing a unit), and have high yield stability (Si2 is nearing zero) are defi ned, namely Express (to 14505, Russia), bi = 1.04, Si2 = 0.053, Yubilyar (to 14723, Belarus), bi = 0.92, Si2 = 0.070, C.I. 7321 (to 14737, the USA), bi = 1.09, Si2 = 0.076, Vallntin (to 15189, Slovakia), bi = 1.13, Si2 = 0.050, CDC Bell (to 14805, Canada), bi = 0.62, Si2 = 0.0065.

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