His classification of the germplasm of the 562 accessions of Italian traditional maize varieties resulted in the description and classification of 10 race complexes, 37 races, and 77 agro-ecotypes.
Germplasm resources for D. latifolia are maintained by the Kerala Forest Research Institute in Thrissur, Kerala, India.
The agronomic, morphological and cytological characterization, and multi-variate analysis, of such and other accessions stored at the germplasm bank of the "Maize experimental station" in Bergamo, allowed the systematic classification of Italian traditional varieties.
Kousik and pathologist Scott Adkins at ARS Subtropical Plant Pathology Research Unit worked together in screening the watermelon germplasm for resistance to SqVYV as to search for potential sources of resistance in wild-type watermelon.