Ergebnisse der Resistenzzüchtung gegenüber Feuerbrand im Pillnitzer Apfelzüchtungsprogramm

The objectives of the apple breeding programme are high fruit quality and the combination of different resistances to economically important diseases. The best ones of the new bred cultivars have a high resistance level to scab, mildew, fire blight, bacterial canker, red spider mite and winter frost as well as good fruit quality and stable and high productivity. The mostly used donors for these characteristics are conventional cultivars like 'Golden Delicious', 'Clivia', 'Alkmene1, some new Pi- and Re-cultivars® and clones of Malus floribunda. In crossings for fire blight resistance Re-cultivars® 'Remo', 'Rewena', 'Reanda' and clones were used. They produce a high percentage of seedlings with a remarkable level of fire blight resistance. The best new fire blight resistant cultivars from the Pillnitz breeding programme are 'Rebella', 'Remo', 'Rewena', 'Reanda', 'Reglindis' and 'Regine'. These multiple resistant cultivars (scab, mildew and fire blight) possess a high level of fire blight resistance in growing shoots and in the flowers. These cultivars used as crossing parents transmit their high degree of resistance to fire blight into their progenies.