This type of inconsistency could be attributable to the
observation that only a small number of SSR markers
of the specific (usually long) motif length(s) have
been used to investigate this relationship in all of the
above-mentioned studies (e.g. only 21 and 12 pentaand hexanucleotide repeat SSR markers were tested in
the current investigation), which worthwhile to
develop more SSR markers with long motifs to further
investigate the relationship between the SSR marker
polymorphism level and the motif length.