| Abstract
| - The tocopherol content of oil from eight flaxseed cultivars grown atfour locations in western Canadafor 3 years was determined to examine genotypic and environmentaleffects. Flaxseed containedan average of 9.3 mg/100 g of total tocopherol in the seed, withγ-tocopherol representing 96−98%of the total tocopherols. The level of tocopherol in flaxseed wascultivar specific and regulated byenvironmental conditions as indicated by the strong cultivar ×location × year interaction. Seasonaldifferences in total tocopherol content were significant, although thecontribution of the δ isomerwas constant at 2.5% of the total tocopherol. In flaxseed,tocopherol content was weakly but positivelyassociated with oil content. The ratio of the tocopherol isomersα, γ, and δ in flaxseed hull at 17:61:22 was different from that in the seed. Keywords: Flaxseed; tocopherol; tocopherol isomers; cultivar effects;seasonal variations; environment; flaxseed hull; oil; Linum usitatissimum
|
