grass is linked to the fact that pearl millet is an annual crop species and this trait was conferred on the hybrids at varying degrees by the different pearl millet genotypes. The results practically showed that cytogenetic barriers to interspecific hybridization involving Nigerian pearl millet type parents, Dauro, Gero A and Maiwa, with S.13 and S.15 elephant grass selections were at their strongest in crosses involving Gero A.