2005 Annual Report 4d.Progress report. This report serves to document research conducted under a Specific Cooperative Agreement between ARS and Iowa State University. Additional details of research can be found in the report for the parent CRIS 3625-21000-046-00D Breeding High Quality Corn for Sustainable, Low-Input farming Systems. This research project will determine if seed quality of high protein corn lines is affected by organic and conventional farming systems. A quality index is going to be determined based on results of laboratory tests performed on seed samples. Correlation of seed quality with other traits, such as variation in protein and oil composition will also be observed. Previous research suggests that chemical composition is influenced by the environment. Seed quality is crucial for a satisfactory crop establishment and is an important part of the process of breeding programs for sustainable farming systems, where varieties are developed in target environments under restricted conditions.