Identification of soybean varieties with high alpha-Tocopherol content
2005
Ujiie, A. (Hokkaido Univ., Sapporo (Japan)) | Yamada, T. | Fujimoto, K. | Endo, Y. | Kitamura, K.
alpha-Tocopherol (Toe) is the tocopherol isoform with the highest vitamin E activity. Since soybean seeds contain a low percentage of alpha-Toc, increasing the alpha-Toc content to improve vitamin E activity is a breeding objective. Little is known about the genetic variability of the tocopherol content and composition in soybeans. In the present study, we analyzed the tocopherol composition of 1,109 germplasm accessions of cultivated and wild soybean by high performance liquid chromatography (HPLC) and identified three varieties, Dobrogeance, Dobruoza 14 Pancevo and Keszthelyi Aproszemu Sarga with a high alpha-Toc content. Dobrogeance showed a similar Toe composition to that of Dobruoza 14 Pancevo with the alpha-Toc content being four to seven times higher than that of standard varieties and almost the same as that of total Toe. Keszthelyi Aproszemu Sarga showed a markedly increased content of alpha-Toc, but a significantly lower total Toe content.
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