Fig. 6

Characteristics of floral display, pollen-to-ovule (P/O) ratio and seed weight of populations of Moehringia tommasinii and M. muscosa. a Petal index (petal width / petal length) of M. muscosa (populations OBR^m, VDC^m and GL^m) and M. tommasinii (populations GL, OSP, CK, PP, ISTa and ISTb). b P/O ratio of M. muscosa (population VDC^m) and M. tommasinii (populations GL, OSP, CK, PP, ISTa and ISTb). c Seed weight (µg) of M. tommasinii for populations GL, OSP, CK, PP, ISTa and ISTb. Box colours are in agreement with the results of genetic clustering of individuals as in Fig. 5. Length of whiskers indicate standard error (one sigma). In Fig. 5a petal shape and size are shematically presented for each population of M. tommasinii and M. muscosa