Abstract
The chromosomal locations of isozyme gene loci encoding isocitrate dehy-drogenase (IDE) and phosphoglucoisomerase (PGI) were investigated in shallot (Allium cepa L. Aggregatum group). The alien monosomic addition lines of A. fistulosum L. with the extra chromosomes (1A, 2A, 5A, 6A, 8A and other unidentified chromosomes) from A. cepa Aggregatum group were used as plant materials. Both gene loci, Idh-1 and Pgi-1, were located on the chromosome 5A. The present study established two new isozyme markers for the chromosome 5A in addition to the six previously reported isozyme markers for the chromosomes 1A, 2A, 6A and 8A.
