Abstract:The objectives of this study were to examine the relationships among quantitative traits and to estimate their broad sense heritabilities in cultivated oats (Avena sativa L.). Four oat crosses were used in this experiment.Biological yield had the highest correlation with grain yield in all F2 populations, followed by harvest index. Grains per panicle appeared to be the most useful trait to use in indirect selection for grain yield among yield components in terms of heritability values and correlations with grain yield. Grain yield per plant significantly and positively associated with groat oil content in two oat populations.The broad sense heritability values of groat oil content ranged from 13 to 77%. Grain yield per piânt had heritability estimates between tow and moderate values.• Key words: Broad sense heritability, correlation, oats (Avena sativa L.), quantitative trait.. Bütün F2 populasyonlar ı nda biyolojik verim, dane verimi ile en yüksek korelasyona sahip olmu ştur, onu hasat indeks izlemiştir. Kal ı t ı m derecesi ve dane verimi ile olan korelasyon de ğerleri göz önünde bulunduruldu ğ unda; salkımda dane say ıs ın ı n, verim komponentleri aras ı nda, indirekt seleksiyonda kullanma aç ı s ı ndan en uygun karakter 'obbitece ği görülmüştür. Dane verimi iki yulaf populasyonunda, dane ya ğ oran ı ile önemli ve pozitif ili şkiye sahip olmu ştur.• Dane ya ğ oran ı için tesbit edilen geni ş anlamda kal ıtı m derecesi %13 ve %77 aras ı nda değişim göstermiştir. Dane verimi ise dü ş ük ve orta aras ı nda kal ı t ı m derecesi de ğ erleri alm ışt ı r. Özet: Bu çal ışman ı n amac ı , kültürü yap ı lan yulaflarda kantitatif karakterler aras ı ndaki ili şkileri, ,: ıncelernek ve karakterlerin geni ş anlamda kal ı t ı m derecelerini belirlemektir. Ara şt ırmada dört yulaf melezinden elde edilen F2 populasyonlar ı kullan ı lm ıştı r.
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