Fig. 4.

Principal component plots of core and reserve accessions in the sampling percentages for core subsets constructed by the least distance stepwise sampling (LDSS) method based on Seuclid distance combining Single cluster method or by the Complete random method. (a) LDSS method in 20% sampling percentage (Seuclid+Single); (b) Complete random method in 20% sampling percentage; (c) LDSS method in 25% sampling percentage (Seuclid+Single); (d) Complete random method in 25% sampling percentage; (e) LDSS method in 30% sampling percentage (Seuclid+Single); (f) Complete random method in 30% sampling percentage