Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: November 1, 2003
Publication Date: November 1, 2003
Citation: Garvin, D.F., Finley, J.W., Carver, B.F. 2003. Genotypic and environmental effects on seed selenium content in common wheat [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. CD-ROM. Paper No. 620. Technical Abstract: Selenium is not only an essential element in humans, but it also has been found to be associated with a reduced incidence of certain cancers when taken in controlled quantities that exceed the recommended daily allowance. In the United States, grains are the principal source of selenium in human diets, and the potential thus exists to develop crop varieties enriched in selenium content as a means of reducing cancer incidence. Little information exists on the extent of genotypic variation for seed selenium content in wheat. The goal of this project is to determine if natural variation for seed selenium content exists in hard red winter wheat germplasm, and also to evaluate genotype x environment effects on this trait. Grain of 12 hard red winter wheat germplasms from the harvest of the 2002 Southern Regional Performance Nursery was obtained, and seed selenium concentrations were determined by hydride-generation atomic absorption spectrometry. The seeds analyzed came from 15 separate nursery locations located in 6 different states, thus making it possible to examine both genotypic differences and environmental effects on seed selenium content across a broad range of environments. Results of this analysis will be presented as they relate to the potential for increasing selenium content in wheat by traditional selection.