Figure 2

Inferred population structure of the collection using STRUCTURE [ 75 ]. Each accession is represented by a line that is partitioned into coloured segments in proportion to the estimated membership in the corresponding populations. a) Best K choice based on the ΔK method K = 2; blue line represents melo subspecies and red line agrestis. b) second best choice K = 7; Dark blue line represents ‘Charentains’ group (1), purple line reticulatus (2), red line Spanish Inodorus accessions (3), light blue line a mixture of inodorus and ameri (4), green line mostly ameri (5), light purple line conomon (6) and orange line African agrestis (7). Abbreviations: Can = cantalupensis, In = inodorus, Am = ameri, Flex = flexuosus, Cha = chate, Dud = dudaim, Con = conomon, Mom = momordica, Chi = chito, Tibish = tibish, Ag = agrestis. La = landraces. Last three letters indicate the country of origin.