b reeding value of oat (AVENA SATIVA L.) lines and varieties
UDC 633.13: 52 Necheporenko L. P.<sup>1</sup>, Orlov S. D.<sup>2</sup><sup />breeding value of oat (AVENA SATIVA L.) lines and varieties. Grain Crops, 2019, 3 (1). 18-25. <sup>1</sup>Verkhniachka Experimental Breeding Station of the Institute of Bioenergy Crops and Sugar Beet NAAS, 1 Shkolnaya Str., pgt Verkhniachka, Hrystynovsryi villege, Cherkaskyi region, 20022, Ukraine <sup>2</sup>Institute of Bioenergy Crops and Sugar Beet NAAS, 25 Klinichna Str., Kyiv, 03010, Ukraine In the research, the collected oat samples, varieties, and lines of various eco -geographical origin were used. In the process of creating new breeding genotypes of spring chaffy and hulless oat with the aid of hybridization, castration was carried out according to the Shishlows method and 7792 flowers were pollinated, 1119 hybrid grains from 159 combinations were obtained. In the hybrid nursery garden, stable by agronomic and economic value progeny was selected (420 grains). Against the provocative background, the number of forms resistant to crown rust is 2016 was 31, and in 2018, the number was 20. Resulted from research 67 variety samples were selected from the infectious background. Of them, 31 resistant, 33 weaksusceptible and 29 susceptible to nigra loose smut. Highly productive breeding genotypes (418-5, 475-12, 486-11, and others) of oat that exceed the standard variety Zakat by 0.3-0.5 t/ha and Skarb Ukrainy by 0.9-1.2 t/ha were selected in the competition test. The selected lines are resistant to lodging and fungal diseases (7-9 points). According to the results of field research and qualification examination, the Register of Plant Varieties Suitable for Distribution in Ukraine was completed with ‘Dioskurii’ spring hulless variety in 2017 and spring chaffy ‘Denka’ in 2018 have been introduced. Keywords: oat; varieties; samples; cross; selection, variety examination.