Influence of Rootstock on Resistance of Vftfs cv. 'Albarifto' Clones to Downy Mildew

摘要

Resistance of leaves and fruit clusters of Vitis vinifera 'Albarino' clones to downy mildew (Plasmopara vitico-la) using non-grafted plants and plants grafted on 110-R. All the experimental plants had been growing since 1993 at the Mision Biologica deGalicia, Spain. Both in terms of their leaves and clusters, some clones were more resistant to infection than others. Some were more susceptible to primary attack than secondary attack, while others showed the opposite characteristics. The degree of susceptibility to disease was independent of the rootstock used or indeed of whether the plant had been grafted or not.