Gudzenko V. Initial material for spring barley breeding for productivity and adaptability in Forest-Steppe of Ukraine.

Subject of research - resistance to disease and lodging, parameters of adaptivity for yielding capacity and elements of yield structure, inheritance, heterosis and transgressive variability. Purpose of research - study of productive and adaptive potential of samples of spring barley gene pool of different environmental and geographical origin, selection of new genetic sources for yield, yield structure elements, resistance to diseases and lodging, combining ability and creation of new spring barley material with breeding value in Forest-steppe of Ukraine. Methods of research - field, laboratory, measuring-weighing, mathematical and statistical. For the first time in Forest-steppe of Ukraine when combining different methods, rate of reaction of spring barley samples of different ecological and geographic origin for the parameters of plasticity and stability has been determined and new genetic sources for yielding capacity, productive tillering, grains number and grain weight for main spike, 1000 grain weight and weight of grains per plant have been identified; new sources of resistance to lodging, powdery mildew, leaf blotch, net blotch, spot blotch and leaf rust of barley have been identified. High efficiency for mlo11 and mlo9 genes of resistance to powdery mildew has been demonstrated. Work and descriptive collections of spring barley with various trait expression levels for productivity and resistance to disease have been formed. New spring barley material with breeding value has been created. New spring barley varieties Myron and Extreme have been submitted to State variety testing. Author's scientific methods are using in breeding programs at the V.M. Remeslo Myronivka Institute of Wheat of NAAS and other scientific institutions of Ukraine. Field of using - selection scientific institutions.