In the genotype TMEII, three of the four markers revealed alleles associated with the CMD2 gene; however, only one marker had an allele associatedwith the CMD2 gene in Dabodabo (Table 3). Since not all alleles of the four markers were found in these two
genotypes (landrace and IITA material), CMD resistancecannot be confirmed with certainty in these genotypes. Nonetheless, both landraces were phenotypically classified as resistant. Further study will be needed to confirm the source of resistance to CMD in
these parents. Further crosses involving these landraces with a susceptible parent will be required to
verify this. If results are consistent with the banding
patterns as observed, then CMD2 gene resistance will
be inferred. If results are not consistent, then both
genotypes may represent a new source of CMD
resistance in these genotypes.