Dr. Beckles' research centers on how pre- and postharvest environmental factors determine fruit and cereal quality and yield. Her approach is by necessity multidisciplinary and includes biochemistry, molecular biology, transcriptomics, metabolomics, physiology as well as applied physics and chemistry. Beckles has researched genetic diversity and relatedness among Coffea genotypes in Nigeria helping to reclassify C. canephora through genotyping-by-sequencing-single nucleotide polymorphism analysis.