Nitrogen content, oil content and oil composition of oat cultivars (A. sativa) and wild Avena species in relation to nitrogen fertility, yield and partitioning of assimilates

abonos abonos nitrogenados aceites aceites vegetales acide gras application rates avena avena sativa avenas avoine azote calidad chemical composition composition chimique contenido proteico cultivars dose d'application engrais especies fatty acids fertilizers harvest index huile nitrogen nitrogen content nitrogen fertilizers nutrientes nutrients oats oils plant oils protein content quality species substance nutritive teneur en azote variedades varieties wild relatives