Ecological spring barley strain testing on the final stage of breeding

Abstract

The paper gives the results of studying promising barley breeding lines during 2015–2017 in various ecological zones of Ukraine, namely, Central Forest-steppe (V.M. Remeslo Myronivka Institute of Wheat of NAAS), Polissya (Nosivka Plant Breeding Experimental Station of the V.M. Remeslo Myronivka Institute of Wheat of NAAS) and Northern Steppe (Kirovohrad State Agricultural Experimental Station of NAAS). Using AMMI and GGE biplot models, breeding lines were ranked according to yield potential and its stability in changing growing conditions. The lines with optimal combination of productivity and stability such as Nutans 4855, Nutans 4941 and Deficiens 5005 were identified. The efficiency of combining ecological testing with statistical-graphical analysis in order to identify genotypes with increased adaptive potential is shown. It is advisable to use this approach on the final stages of breeding work for a more detailed assessment of the lines being candidates for varieties.