Polymerase chain reaction (PCR) amplification of badnavirus endogenous pararetroviruses (EPRVs) from total DNA of Dioscorea rotundata and D. cayenensis. PCR amplifications were performed on total genomic DNA extracted from D. rotundata seedlings and D. rotundata and D. cayenensis plants using the primer pairs verifG1F/R (A, top panel), atpB1/B2 (A, bottom panel), B389‐2F/3R (B, top panel) and B389‐2F/4R (B, bottom panel). Lane 1, D. rotundata seedling Sd1; lane 2, D. rotundata seedling Sd2; lane 3, D. rotundata seedling Sd3; lane 4, D. cayenensis
GP425; lane 5, D. cayenensis
CRB146; lane 6, D. cayenensis
CRB152; lane 7, D. rotundata
CRB439; lane 8, D. rotundata
GN290.