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¹ Trakya Tarımsal Araştırma Enstitüsü, Edirne
² Tarla Bitkileri Merkez Araştırma Enstitüsü, Ankara
³ Ege Tarımsal Araştırma Enstitüsü, İzmir DOI : 10.21566/tarbitderg.359381 - This study was carried out in 2014–2015 cropping year in Edirne and Kırklareli locations with 60 oat lines and 4 commercial varieties (Kırklar, Kahraman, Yeniçeri and Sebat). The experiment was established in an alpha lattice experimental design technique (8 x 8= 64) with three replications. In the research, it was aimed to determine genotypes of the region suitable for human nutrition by examining yield and some quality parameter performances of oat genotypes developed by Thrace Agricultural Research Institute. The traits such as grain yield (GY), thousand kernel weight (TKW), test weight (TW), plumpness (P, sieved 2.2 mm slotted), husk rate (HR), full grain oat protein (FGOP), starch (S), and β-glucan (β-G) content of genotypes were investigated. The variations among oat lines for grain yield was significant and differences for TKW, TW, P, HR, FGOP, S, and β-G were also determined. The GY, TKW, TW, P, HR, FGOP, S, and β-G of oat lines ranged between 369.7–865.0 (682.1) kg/da, 22.2–41.4 (31.6) g, 48.2–58.6 (52.5) kg/hl, 20.0–96.3% (71.8), 20.6–39.2% (29.9), 14.5–20.2% (17.8), 49.5–61.2% (56.1), and 3.5–5.9% (4.6) in Kirklareli location; and 116.4–751.3 (630.9) kg/da, 23.1–39.4 (31.7) g, 44.6–56.7 (52.0) kg/hl, 23.1–95.4% (68.5), 17.0–39.5% (26.3), 17.3–22.4% (20.1), 47.7–57.3% (52.9), and 3.9–5.8% (4.8) in Edirne location, respectively. The promising oat lines in the experiment were 11, 14, 15, 16, 21, 22 and CV Kahraman in Kırklareli; and 11, 14, 15, 16, 38, and CV Kahraman in Edirne location regarding their grain yield and other quality parameters. The oat lines 11, 14, 15, 16, and CV Kahraman were suitable in terms of human nutrition in Trakya-Marmara region. Keywords : Oat (Avena sativa L.), grain yield, human nutrition, quality traits