Evaluation location: North Dakota, United States
Oil concentration of accessions from 2002 exploration. Analyses were performed in 2002 on seeds from the original population. Nuclear Magnetic Resonance (NMR) using 2 ml of dried seeds from wild Helianthus species (cultivated H. annuus uses 40 ml). This methodology is an acceptable technique for analysis. Oil concentration is expressed on a percent of dry weight basis.