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Oneofthemostdamagingpestsofroses,therootlesionnematodePratylenchuspenetrans,ismainlycontrolledbynematicides.Asnematodemultiplicationandhosttolerancevarybetweenrootstockcultivars,theuseofPpenetransresistantrootstocksisaninterestingalternative.Amethodtoobse