Оптимізація азотно-сіркового живлення сорго суданського (Sorghum x drummondii) в умовах нестійкого зволоження

Abstract

Goal. To assess collection samples of spring barley of different eco-geographical origins according to valuable economic characteristics (duration of the growing season, plant height, resistance against diseases and lodging, weight of 1000 grains, yield), and on this basis to select valuable source material for selection. Methods. General scientific (analysis and synthesis) — for differentiation and generalization of the obtained results, field — for determination of the resistance of samples against diseases and lodging, dispersive — for determination of reliability assessment of experimental data. Results. During 2016–2020, at the V.Ya. Yuriev Institute of Plant Growing of NAAS, an assessment of the diversity of 457 collection samples of spring barley from 27 countries of the world had been carried out according to the manifestation of valuable economic characteristics. Sources of early maturity, stunted growth, resistance against powdery mildew and dark brown helminthosporous spotting and lodging, high grain size, and increased yield were identified. Conclusions. The material, which was diverse in terms of countries of origin, and the conditions of years of research, which varied in terms of temperature and level of moisture supply, made it possible to identify sources of valuable economic characteristics among the collected samples of spring barley. The greatest selection value had the samples that combine a high level of a complex of valuable traits in their genotype, MIP Visnyk, Mouravi, Dar Nosivshchyny, Airis, Yavir (UKR); Dialoh (RUS); Trebon (CZE); KWS Aliciana, KWS Bambina (DEU). The selected samples are of promising starting materials for combinatorial selection.