Resistance breeding in apple at Dresden-Pillnitz.

Resistance breeding in apple has a long tradition at the Institute of Fruit Breeding now Julius Kuehn-institute in Dresden-Pillnitz. The breeding was aimed at the production of multiple resistance cultivars to allow a more sustainable and environmentally friendly production of apple. In the last decades a series of resistant cultivars (Re®-cultivars) bred in Dresden-Pillnitz has been released, ‘Recolor’ and ‘Rekarda’ in 2006. The main topic in the resistance breeding programme was scab resistance and the donor of scab resistance in most cultivars was Malus x floribunda 821. Due to the development of strains that are able to overcome resistance genes inherited by M. x floribunda 821 and due to the fact that single resistance genes can be broken easily, pyramiding of resistance genes is necessary. Besides scab, fire blight and powdery mildew are the main disease for which a pyramiding of genes is aspired in Pillnitz. Biotechnical approaches are necessary for the early detection of pyramided resistance genes in breeding clones. This paper will give an overview of the resistance breeding of apple in Pillnitz and the methods used.

[1]  J. Celton,et al.  CONFIRMATION OF THE FIRE BLIGHT QTL OF MALUS × ROBUSTA 5 ON LINKAGE GROUP 3 , 2008 .

[2]  K. Richter,et al.  Strong evidence for a fire blight resistance gene of Malus robusta located on linkage group 3 , 2007 .

[3]  C. Durel,et al.  Development of molecular markers linked to the 'Fiesta' linkage group 7 major QTL for fire blight resistance and their application for marker-assisted selection. , 2007, Genome.

[4]  A. Boudichevskaia,et al.  Development of a multiallelic SCAR marker for the scab resistance gene Vr1/Vh4/Vx from R12740-7A apple and its utility for molecular breeding , 2006, Tree Genetics & Genomes.

[5]  A. Patocchi,et al.  QTL mapping of fire blight resistance in apple , 2006, Molecular Breeding.

[6]  W. E. van de Weg,et al.  Identification of a major QTL together with several minor additive or epistatic QTLs for resistance to fire blight in apple in two related progenies , 2005, Theoretical and Applied Genetics.

[7]  A. Peil,et al.  Beschreibung des Feuerbrandbefalls am Institut für Obstzüchtung in Dresden-Pillnitz im Jahr 2003 , 2004, Erwerbs-Obstbau.

[8]  B. Schneider,et al.  'Candidatus Phytoplasma mali', 'Candidatus Phytoplasma pyri' and 'Candidatus Phytoplasma prunorum', the causal agents of apple proliferation, pear decline and European stone fruit yellows, respectively. , 2004, International journal of systematic and evolutionary microbiology.

[9]  C. Fischer.  MULTIPLE RESISTANT APPLE CULTIVARS AND CONSEQUENCES FOR APPLE BREEDING IN THE FUTURE , 2000 .