DEVELOPMENT AND CHARACTERIZATION OF GENETIC RESOURCES FOR AGRONOMIC AND QUALITY TRAITS USING GENOMIC TOOLS
Title: EFFICACY OF USING A GIANT EMBRYO MUTANT FOR ENHANCING WHOLE GRAIN RICE HEALTH BENEFICIAL PROPERTIES
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: September 20, 2010
Publication Date: November 12, 2010
Citation: Bergman, C.J., Chen, M., Champagne, E.T., Grimm, C.C., Mcclung, A.M. 2010. EFFICACY OF USING A GIANT EMBRYO MUTANT FOR ENHANCING WHOLE GRAIN RICE HEALTH BENEFICIAL PROPERTIES. Meeting Abstract. 4487.
Globally, the five leading risks for adult mortality are life style related. These risk factors include smoking, physical inactivity and others that are diet related, specifically, obesity, high blood pressure and blood glucose levels. Consumption of whole grains has been associated with a reduced likelihood of developing the diet related disease risk factors. Therefore, whole grain (WG) rice offers humans superior nutritional value compared to rice in its milled form. For example, WG rice contains higher levels of minerals and various phytochemicals that are proposed to offer health benefits. However, in comparison to WG wheat, WG rice has less bran and thus less dietary fiber. A mutant developed from the US cultivar Drew has been identified that has a giant embryo. Drew, its mutant and Cocodrie, a leading US cultivar, were grown in multiple locations. Grain was harvested and the following samples prepared for analyses: WG rice flour, bran and germ. Genotype versus environment effects on the levels of several phytochemicals in these samples were determined. The results suggest that the giant embryo mutant has the potential to improve human health by delivering high levels of several phytochemical fractions with proposed health benefits. However, it demonstrated low yield potential and thus to capture its full potential the mutant will need to be used to create an agronomically competitive cultivar with added value.