abstract:Populus nigra, the black poplar, is a species of cottonwood poplar, the type species of section Aigeiros of the genus Populus, native to Europe, southwest and central Asia, and northwest Africa.Flora Europaea: Populus nigra
Disease resistance of the seedlingsof59introducedPopulusnigra clones seedlings infected with Marssonina brunneaand Alternaria tenuis were investigated byapplyingstatisticalanalysis.