We are interested in the molecular basis of quantitative genetic variation in maize. We are using anthocyanin pigmentation, carotenoid biosynthesis, and telomere length as model systems. Our results indicate that regulatory genes and those structural genes that participate in rate limiting steps are the most likely to have measurable quantitative effects. In parallel with the mapping work, we have been characterizing regulatory genes affecting anthocyanin and carotenoid biosynthesis. We have used transposable genetic elements to clone these genes.
Genes affecting cotton fiber properties is a new area of activity in our laboratory.
The first approach is to develop genetic markers that are effective in probing natural variation in this trait. The second approach is to identify and characterize fiber-specific genes. For an enlarged view and figure caption click on kernel. Mapping telomeres and factors affecting their length. Medline Abstract Szabo, V.M. and Burr, B., Simple inheritance of key traits distinguishing maize and teosinte.