Discussion
The percentage of polymorphism between two parents
of each population screened with 542 SSR markers
was 21 %on average among the nine populations. The
moderately low level of polymorphism may be due to
low molecular diversity among the parental genotypes
as earlier suggested by Mace et al. (2006). The fact
that the two populations in which each of the four SSR
markers (SSRY68, NS323, [ESTs]SSRY7 and