Sélection de variétés de fruits tolérantes au feu bactérien

; ; ; ; ; ; ; ; ; ; ; ; ; (). Sélection de variétés de fruits tolérantes au feu bactérien. Revue suisse Viticulture, Arboriculture, Horticulture, 44(6). 350-356.

Breeding fire blight resistant
apple varieties

Considerable progress has been
achieved in breeding apple and
pear varieties resistant to fire
blight. Within the project ZUEFOS
(breeding fire blight resistant fruit
varieties) the following partners
were collaborating: ACW, ETH
Zürich, Lubera and Fruture as well
as VariCom. 160 varieties and new
selections were tested by ACW
for their shoot susceptibility.
Resistant selections and varieties
were considered for new crosses.
About 20 000 seedlings resulted
from these crosses. Moreover,
the resistant but small-fruited
wild apples Malus x robusta 5
and ‚Evereste‘ were crossed with
high quality cultivars. Two
different methods were applied
to speed up the generation time.
Selected fire blight tolerant
varieties and selections are tested
for their productivity and market
value in four pilot orchards
throughout Switzerland