Fig. 4 in Identification and occurrence of phenylethanoid and iridoid glycosides in six Polish broomrapes (Orobanche spp. and Phelipanche spp., Orobanchaceae)

Fig. 4. Results of PCA analysis of examined broomrape species and determined phenylethanoid glycosides (3–15, 17–18): the 4 derived PCs with explained variance % (A); representation of broomrape samples (B1) and PhGs (B2) as functions of the PC1 vs PC2, with color-coded relationships between compounds and plant samples; representation of broomrape samples (C1) and PhGs (C2) as functions of the PC1 vs PC3, with color-coded relationships between compounds and plant samples. (O. caryophyllacea – O. caryo; O. coerulescens – O. coer; O. lutea – O. lut; O. picridis – O. pic; P. arenaria – P. aren; P. ramosa – P. ram). (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)