Isozyme variation in Sisyrinchium sarmentosum (Iridaceae)

Sisyrinchium sarmentosum is a rare, duodecaploid plant endemic to the Mt. Adams and Mt. Hood areas of Washington and Oregon. Isozyme variation in six Washington populations was assessed to infer genetic variation in this species. Five of the six sampled populations were monomorphic for the sixteen enzymes surveyed, although at one putative locus one of these populations was monomorphic for an enzyme band pattern not seen in any other population. The sixth population had low levels of variation in two enzymes. This low level of variation has often been observed in very rare species and high polyploids. Apparently, the species has recently gone through a bottleneck, perhaps during its recent origin as a species.Wilson et al "Isozyme variation in Sisyrinchium sarmentosum (Iridaceae)." Northwest Science. 2000; 74(4): 346-35