Professor of Crop Science and Research Geneticist (USDA)
1238 Williams Hall
Campus Box 7620
Raleigh, NC 27695-7620
Office: 1238 Williams Hall
Jim Holland Homepage
Dr. Jim Holland
We are interested in understanding the nature of genetic variation within maize (field corn), Zea mays:
- How is genetic variation distributed among and within temperate inbred lines, temperate landraces, tropical inbred lines, and tropical accessions?
- Are there unique allelic variants in exotic, tropical maize that are absent from the U.S. breeding pool?
- Which genomic regions are associated with phenotypic variance for important agronomic traits (grain yield, flowering time, plant height, disease resistance)?
- How do allelic variations at different loci interact in their effects on phenotypes (is epistasis important, and how does it ramify from genic interactions to phenotypic interactions)?
- What are the most efficient breeding procedures for incorporating unique and favorable alleles from unadapted genetic backgrounds into well-adapted temperate lines?
- Can DNA marker-assisted selection aid us in this task?