Tocopherol content of soybean lines with mid-oleate and 1%-linolenate

Thumbnail Image
Date
2009-01-01
Authors
Baumgartner, Raechel
Major Professor
Advisor
Walter R. Fehr
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Altmetrics
Authors
Research Projects
Organizational Units
Organizational Unit
Agronomy

The Department of Agronomy seeks to teach the study of the farm-field, its crops, and its science and management. It originally consisted of three sub-departments to do this: Soils, Farm-Crops, and Agricultural Engineering (which became its own department in 1907). Today, the department teaches crop sciences and breeding, soil sciences, meteorology, agroecology, and biotechnology.

History
The Department of Agronomy was formed in 1902. From 1917 to 1935 it was known as the Department of Farm Crops and Soils.

Dates of Existence
1902–present

Historical Names

  • Department of Farm Crops and Soils (1917–1935)

Related Units

Journal Issue
Is Version Of
Versions
Series
Department
Abstract

Soybean [Glycine max (L.) Merr.] oil is an important commercial source of tocopherol (Vitamin E). Some genetic modifications of the fatty ester composition of soybean oil have resulted in changes in the content of total tocopherol and its components. The objective of this study was to compare the tocopherol content of 20 soybean lines with mid-oleate and 1%-linolenate (MO) content to 20 lines with conventional-oleate and 1%-linolenate (CO) content from each of three segregating populations. The 60 lines were evaluated in three Iowa environments during 2007. The average total tocopherol content in oil across populations was 1789.1 mg kg-1 for the MO type and 1781.7 mg kg-1 for the CO type. Although the average total tocopherol was similar between the two types, the average proportion of α-tocopherol was 27.6 mg kg-1 greater, γ-tocopherol was 76.5 mg kg-1 less, and δ-tocopherol was 56.2 mg kg-1 greater for the MO than the CO type. There was significant variation among MO lines for total tocopherol and the three components, which indicated that it should be possible to develop cultivars with tocopherol contents that are best suited to the needs of the end-user.

Comments
Description
Keywords
Citation
Source
Subject Categories
Copyright
Thu Jan 01 00:00:00 UTC 2009