SUSCEPTIBILITY OF SEVERAL QUINCE ROOTSTOCKS TO LATENT VIRUSES
An experiment was carried on to estimate differences among clones of quince for susceptibility to viruses.
- Six healthy clones were infected by three viruses and their common associations: Vein Yellows, Mosaic and Rubbery wood. Growth was recorded on rootstock budded on itself ("homo-budding") and on budded varieties (Passe-Crassane or Williams). In these experimental conditions, the clone C16-L-2 (SYDO) was less susceptible than two other Angers clones (Quince A and C21-L-4) and the clone BA29 was less susceptible than two other Provence clones (C98-4 and C85-1).
The importance of this susceptibility to viruses of rootstocks is discussed.