Certification scheme. Virus-free or virus-tested fruit trees and rootstocks. Part 2. Tables of viruses and vectors

arbre fruitier cydonia oblonga europa europe fruit trees juglans regia longidorus malus pumila mediterranean countries nematodos de las plantas nomenclatura nomenclature plant nematodes plant viruses plantas libres de virus plante indemne de virus portainjertos porte greffe prunus amygdalus prunus armeniaca prunus avium prunus cerasus prunus domestica prunus persica prunus salicina pyrus communis rootstocks vecteur de maladie vectores vectors virus de las plantas xiphinema