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Development of Sunflower Germplasm with High Delta-tocopherol Content by L. Velasco; B. Pérez-Vich; J.M. Fernández-Martínez is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Development of Sunflower Germplasm with High Delta-tocopherol Content about?

Tocopherols are the main compounds with antioxidant activity in oilseeds. Sunflower seeds contain predominantly alpha-tocopherol, which accounts for more than 90% of the total tocopherols in the seeds. This tocopherol derivative possesses a maximum vitamin E or in vivo antioxidant activity, but it exerts a minimum in vitro protective action in oils and food containing them. Other tocopherol derivatives such as beta-, gamma-, and delta-tocopherol are more powerful antioxidants than alpha-tocopherol. Accordingly, a partial replacement of alpha-tocopherol in sunflower seeds is an important breeding objective. So far, variants with high gamma tocopherol content (>85%), medium beta-tocopherol content (30% to 50%), and medium delta-tocopherol content (<25%) have been developed. The objective of the present research was to develop sunflower germplasm with novel tocopherol profiles. Seed of four Peredovik accessions of different origins were used for chemical mutagenesis with ethyl methane sulfonate (EMS). Single-seed screening in the M 2 generation resulted in the identification of an M 2 seed with 19% gamma-tocopherol. M 3 seeds exhibited wide segregation for gamma-tocopherol content, fr

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Author

L. Velasco; B. Pérez-Vich; J.M. Fernández-Martínez

Publisher

National Library of Serbia

Published

2004

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)