GENETIC SOURCES OF INCREASED PRODUCTIVE AND ADAPTIVE POTENTIAL FOR WINTER BARLEY BREEDING IN THE CENTRAL FOREST-STEPPE OF UKRAINE
Keywords:
winter barley, gene pool, accessions, genetic sources, productivity, adaptability, AMMI and GGE biplot modelsAbstract
The paper covers the results of long-term (2012-2016) testing at the V.M. Remeslo Myronivka Institute of Wheat of NAAS 154 accessions of winter barley gene pool of various eco-geographical origin received from the National Center for Plant Genetic Resources of Ukraine and International Center ICARDA. Weather conditions during period of the research were characterized by considerable variability in hydrothermal regime indices, thus resulted in combination of a number of adverse abiotic and biotic factors in some years: moisture deficit and crop "scorching"; lodging due to torrential rainfalls; intensive progress of complex of pathogens. The most years of the research were characterized with uneven distribution of rainfall during cropping season of winter barley plants. Since chemical protection of crops from diseases, pests, and lodging was not used, it is possible to assert that the resulting level of yielding capacity really characterizes ability of the genotypes studied to realize genetic potential of productivity under effects of various abiotic and biotic factors in these environmental conditions.The highest yielding capacity mean through the experiment was noted in 2015 - 509 g/m2, the lowest one in 2014 - 280 g/m2 with a range of variation between accessions within a year of 305 to 658 g/m2. The absolute level of yielding capacity ranged from 876 g/m2 in the cultivar Cartel (FRA) in 2015 to 200 g/m2 in 2014 in the accession from International nursery IBSP-W.For accession visualization and ranging in productivity and adaptability AMMI and GGE biplot models were used. There were identified the source of high productive and adaptive potential: Cartel (FRA) - 680 g/m2, Strimkyi (UKR) - 633 g/m2, Fyodor (RUS) - 606 g/m2, Michailo / Dobrinya (SYR) - 592 g/m2, Cinderella (DEU) - 584 g/m2, Samson (RUS) - 581 g/m2.Productivity and adaptability of the accessions: Mascara (DEU) - 554 g/m2, Ihor (UKR) - 554 g/m2, Existenz (DEU) - 553 g/m2, Grivita / CWB117- 5-9-5 (SYR) - 552 g/m2, Salamandra (FRA) - 552 g/m2, Selena Star (UKR) - 551 g/m2, Aivenho (UKR) - 550 g/m2 were at the level of the standard Zherar - 543 g/m2. These genotypes are recommended to involve in breeding process when creating source material for development of winter barley varieties adapted to the conditions of the Central Forest-Steppe of Ukraine.
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